GRASS-Wiki - User contributions [en]

Student Grants

2023-09-18T10:41:34Z

⚠️Landa: /* Acknowledgements */ missing comma

{{toc|right}}

[[File:Grassgis logo colorlogo text whitebg.png|300px|right|none]]

GRASS GIS offers a limited number of student grants for projects related to GRASS GIS. These can include actual coding, bug fixing, or documentation and the creation of educational resources.

== Why to apply ==

You will:
* receive mentorship by experienced open-source developers;
* gain programming skills;
* be able to add open-source development into your portfolio;
* get stipend.

== Eligibility ==

To apply for a grant, a student must:
* be eighteen (18) years of age or older upon application;
* be enrolled into a post-secondary academic program, as of the beginning of the grant;
* for the duration of the grant, be eligible to work in the country in which they reside;
* and not be a [https://trac.osgeo.org/grass/wiki/PSC GRASS GIS Project Steering Committee (PSC)] member.

In addition, the student has to:
* demonstrate necessary skills and ability to contribute to GRASS GIS through a [https://github.com/OSGeo/grass/pulls GitHub pull request (PR)].

One person can be awarded one grant at a time, but can apply more than once at different times.

== Stipend ==

* The maximum per grant is 1000 USD. Proposals can be for lower amounts.
* The time to complete the grant should be maximum 3 months, but shorter projects are possible. This depends on the money requested and applicant's availability.
* Start date is flexible.
* For the 2023 deadline, GRASS GIS will offer a total of 4000 USD for stipends.

== Before you apply ==

* Express your interest in applying through the current GRASS community channels (grass-dev@osgeo.org mailing list, GitHub Discussions, or Gitter).
* Identify a topic matching your interest and skills.
* Look for ways to contribute to GRASS that are related to the selected topic (improve documentation, tests, fix bugs, etc.).
* Submit a PR.

== How to apply ==

Students should:
* write their proposals as Google Documents (or similar collaborative online document creation platform) and
* send an email to grass-grants@osgeo.org to notify of their application (with the link to the document).

The email should contain:
* proof of eligibility
** confirm you are 18 year of age or above and that you can work in the country in which you reside for the duration of the grant
** proof of student status (e.g., scanned PDF)
** link to a GRASS GIS PR or PRs (work in progress is okay at this point)

The proposal document should contain:
* applicant's name
* description of the proposed work
* timeline with activities and deliverables
* budget proposal

For timely proposals, applicants will receive feedback from the grants committee and mentors. Changes can be made to the proposal until the deadline.

For the current call, applications will be accepted until '''October 30, 2023'''.

== Approval process ==

Project proposals are evaluated by the [https://trac.osgeo.org/grass/wiki/PSC GRASS GIS Project Steering Committee] within two weeks after the deadline and a notification will be sent to successful applicants.

== Stipend payment ==

Stipend are paid in two amounts (unless stated otherwise for the specific grant):
* 50% at the beginning of the work phase
* 50% after reception and approval of the final report by the PSC

== Final report ==

The final report should be also written in the [[Student_Grants/2022|GRASS GIS wiki]] under the proposal up to two weeks after the final date planned originally. When finished, the student sends an email to [https://lists.osgeo.org/pipermail/grass-psc/ grass-psc mailing list] to announce the end of the work and share the link to the final report. The final report should include:
* A description of the state of affairs before the work
* A description of the work done

== Topics ==

The GRASS GIS community provides a list of topics highly relevant to the community. Applicants may suggest their own topics.

List of open topics:

* Improve documentation and tests for a set of tools
** includes revising text, add missing/update examples with pictures, notebook how to generate the pictures, add tests (pytest)
** requirements: Python
** $100-200 per tool (proposal should include the total amount requested and budget justification)
** list of suggested tools: r.sim.water, r.reclass, r.resample, r.resamp.filter, r.mask, r.mode, v.surf.idw, v.surf.rst, r.fillnulls, r.surf.*, …

* r.rescale - reimplement as a wrapper to r.recode (see https://github.com/OSGeo/grass/issues/1986), add tests, examples and documentation
** must include tests and documentation
** requirements: Python
** $500

* Parallelize a tool with OpenMP
** possible candidates: r.horizon, r.mapcalc, r.proj, v.surf.idw
** must include tests and benchmarks
** requirements: C, OpenMP experience
** $1000 (one tool)

* Implement ''History manager'' in GRASS GUI
** display history of executed commands and re-execute them
** requirements: Python
** $1000

* Improve d.vect.chart
** fix legend (see https://github.com/OSGeo/grass/issues/3100), update documentation, add tests
** must include documentation, examples, and basic tests
** requirements: basic C and Python
** $500

* Add JSON output to different tools in C
** r.report, r.mapsets, r.what, r.univar, r.info, v.info, r3.info
** must include tests and basic documentation
** requirements: C
** $500 for one tool (proposal should include the total amount requested and budget justification)

See selected topics from past years: [https://trac.osgeo.org/grass/wiki/GSoC/2021/JupyterAndGRASS/MiniGrant2022 Space-Time Dataset Visualization and Improved Interactive Maps for grass.jupyter], [https://trac.osgeo.org/grass/wiki/wxGUIDevelopment/RedesigningStatusbar Redesigning a map display status bar combo box into a new settings dialog]

== Acknowledgements ==

The student stipends are sourced from the financial support the GRASS project receives from sponsors on [https://opencollective.com/grass#section-contributors Open Collective] and [https://www.osgeo.org/ the OSGeo Foundation]. Time of mentors is covered by individual mentors or their employers.

In-kind contributions of personnel time:

* [https://geospatial.ncsu.edu/ North Carolina State University, Center for Geospatial Analytics]
* [https://geomatics.fsv.cvut.cz/en/ Department of Geomatics], Faculty of Civil Engineering, Czech Technical University in Prague

Personal time: Vaclav Petras, Anna Petrasova, Helena Mitasova, Stephan Blumentrath, Martin Landa

[[Category:Community]]
[[Category:Development]]
[[Category:Student Grants]]

Student Grants

2023-09-18T10:41:17Z

⚠️Landa: /* Acknowledgements */ + CTU

{{toc|right}}

[[File:Grassgis logo colorlogo text whitebg.png|300px|right|none]]

GRASS GIS offers a limited number of student grants for projects related to GRASS GIS. These can include actual coding, bug fixing, or documentation and the creation of educational resources.

== Why to apply ==

You will:
* receive mentorship by experienced open-source developers;
* gain programming skills;
* be able to add open-source development into your portfolio;
* get stipend.

== Eligibility ==

To apply for a grant, a student must:
* be eighteen (18) years of age or older upon application;
* be enrolled into a post-secondary academic program, as of the beginning of the grant;
* for the duration of the grant, be eligible to work in the country in which they reside;
* and not be a [https://trac.osgeo.org/grass/wiki/PSC GRASS GIS Project Steering Committee (PSC)] member.

In addition, the student has to:
* demonstrate necessary skills and ability to contribute to GRASS GIS through a [https://github.com/OSGeo/grass/pulls GitHub pull request (PR)].

One person can be awarded one grant at a time, but can apply more than once at different times.

== Stipend ==

* The maximum per grant is 1000 USD. Proposals can be for lower amounts.
* The time to complete the grant should be maximum 3 months, but shorter projects are possible. This depends on the money requested and applicant's availability.
* Start date is flexible.
* For the 2023 deadline, GRASS GIS will offer a total of 4000 USD for stipends.

== Before you apply ==

* Express your interest in applying through the current GRASS community channels (grass-dev@osgeo.org mailing list, GitHub Discussions, or Gitter).
* Identify a topic matching your interest and skills.
* Look for ways to contribute to GRASS that are related to the selected topic (improve documentation, tests, fix bugs, etc.).
* Submit a PR.

== How to apply ==

Students should:
* write their proposals as Google Documents (or similar collaborative online document creation platform) and
* send an email to grass-grants@osgeo.org to notify of their application (with the link to the document).

The email should contain:
* proof of eligibility
** confirm you are 18 year of age or above and that you can work in the country in which you reside for the duration of the grant
** proof of student status (e.g., scanned PDF)
** link to a GRASS GIS PR or PRs (work in progress is okay at this point)

The proposal document should contain:
* applicant's name
* description of the proposed work
* timeline with activities and deliverables
* budget proposal

For timely proposals, applicants will receive feedback from the grants committee and mentors. Changes can be made to the proposal until the deadline.

For the current call, applications will be accepted until '''October 30, 2023'''.

== Approval process ==

Project proposals are evaluated by the [https://trac.osgeo.org/grass/wiki/PSC GRASS GIS Project Steering Committee] within two weeks after the deadline and a notification will be sent to successful applicants.

== Stipend payment ==

Stipend are paid in two amounts (unless stated otherwise for the specific grant):
* 50% at the beginning of the work phase
* 50% after reception and approval of the final report by the PSC

== Final report ==

The final report should be also written in the [[Student_Grants/2022|GRASS GIS wiki]] under the proposal up to two weeks after the final date planned originally. When finished, the student sends an email to [https://lists.osgeo.org/pipermail/grass-psc/ grass-psc mailing list] to announce the end of the work and share the link to the final report. The final report should include:
* A description of the state of affairs before the work
* A description of the work done

== Topics ==

The GRASS GIS community provides a list of topics highly relevant to the community. Applicants may suggest their own topics.

List of open topics:

* Improve documentation and tests for a set of tools
** includes revising text, add missing/update examples with pictures, notebook how to generate the pictures, add tests (pytest)
** requirements: Python
** $100-200 per tool (proposal should include the total amount requested and budget justification)
** list of suggested tools: r.sim.water, r.reclass, r.resample, r.resamp.filter, r.mask, r.mode, v.surf.idw, v.surf.rst, r.fillnulls, r.surf.*, …

* r.rescale - reimplement as a wrapper to r.recode (see https://github.com/OSGeo/grass/issues/1986), add tests, examples and documentation
** must include tests and documentation
** requirements: Python
** $500

* Parallelize a tool with OpenMP
** possible candidates: r.horizon, r.mapcalc, r.proj, v.surf.idw
** must include tests and benchmarks
** requirements: C, OpenMP experience
** $1000 (one tool)

* Implement ''History manager'' in GRASS GUI
** display history of executed commands and re-execute them
** requirements: Python
** $1000

* Improve d.vect.chart
** fix legend (see https://github.com/OSGeo/grass/issues/3100), update documentation, add tests
** must include documentation, examples, and basic tests
** requirements: basic C and Python
** $500

* Add JSON output to different tools in C
** r.report, r.mapsets, r.what, r.univar, r.info, v.info, r3.info
** must include tests and basic documentation
** requirements: C
** $500 for one tool (proposal should include the total amount requested and budget justification)

See selected topics from past years: [https://trac.osgeo.org/grass/wiki/GSoC/2021/JupyterAndGRASS/MiniGrant2022 Space-Time Dataset Visualization and Improved Interactive Maps for grass.jupyter], [https://trac.osgeo.org/grass/wiki/wxGUIDevelopment/RedesigningStatusbar Redesigning a map display status bar combo box into a new settings dialog]

== Acknowledgements ==

The student stipends are sourced from the financial support the GRASS project receives from sponsors on [https://opencollective.com/grass#section-contributors Open Collective] and [https://www.osgeo.org/ the OSGeo Foundation]. Time of mentors is covered by individual mentors or their employers.

In-kind contributions of personnel time:

* [https://geospatial.ncsu.edu/ North Carolina State University, Center for Geospatial Analytics]
* [https://geomatics.fsv.cvut.cz/en/ Department of Geomatics] Faculty of Civil Engineering, Czech Technical University in Prague

Personal time: Vaclav Petras, Anna Petrasova, Helena Mitasova, Stephan Blumentrath, Martin Landa

[[Category:Community]]
[[Category:Development]]
[[Category:Student Grants]]

Talk:GRASS Community Meeting Prague 2023

2023-06-06T10:22:01Z

⚠️Landa: /* Martin Landa */

__TOC__

== Tasks for participants ==

* Create section for you in the Reports section.
* List all the things you are working on in the section. Update the list each day. Include things you work on with other people.
* Link the [https://github.com/orgs/OSGeo/projects/1/ GRASS Community Meeting Prague 2023] project on GitHub to each PR or issue you are working on or plan to be working on.
* If you are or will be working on an issue or on a PR which is not originally submitted by you, assign yourself to the issue or PR. (You can unassign yourself later if you change your mind.)

== Planning and organizing ==

* Initial planning: Veronica Andreo, Martin Landa, Vaclav Petras, Helmut Kudrnovsky, Anna Petrasova, Huidae Cho, Markus Neteler, Helena Mitasova, Micha Silver, Linda Kladivova
* Funding acquisition: Veronica Andreo, Markus Neteler, Vaclav Petras, Anna Petrasova, Huidae Cho, Luca Delucchi, Venkatesh Raghavan
* Budget: Vaclav Petras, Markus Neteler, Veronica Andreo
* Venue and local organizing: Martin Landa, helpers: Ondrej Pesek, Vaclav Petras
* T-shirts, hoodies, stickers: Vaclav Petras, Anna Petrasova
* Promotion, invitations, and social media: Caitlin Haedrich, Veronica Andreo, Vaclav Petras
* Wiki page: Martin Landa, Markus Neteler, Vaclav Petras, Veronica Andreo
* Virtual meeting organizing: Veronica Andreo
* Photography: Caitlin Haedrich, Maris Nartiss

== Ideas for the meeting agenda ==

Collect ideas here :-)

=== Markus Neteler ===

* Improve QGIS-GRASS GIS integration; update of provider to GRASS GIS 8
* GRASS GIS addons overview generator for entire GitHub (and more?) based on tag "[https://github.com/topics/grass-gis-addons grass-gis-addons]"
* Discuss about a 4th edition of "Open Source GIS: A GRASS GIS Approach"
* message translation: Easy [https://docs.weblate.org/en/latest/user/translating.html#machine-translation machine translation] of messages in [https://weblate.osgeo.org/translate/grass-gis OSGeo-Weblate] with DeepL API
** my tests with DeepL show that the quality is very good; average translation time of a user message shrinks to 15 seconds {{done}}
** note: one needs to login to Weblate to see the "Automatic suggestion" button (using the OSGeo-ID)
* Fix docs:
** Provide better explanation for radius parameter for r.resamp.filter: https://github.com/OSGeo/grass/issues/2569
** improve v.clean docs

=== Vero ===

* '''All - think about GRASS GIS mission and vision''': Where do we want to be as a project in 5 years time? What do we want to have? What do we want to be?
* Participate in discussions about GRASS interfaces with QGIS and R (rgrass)
* Discuss sponsoring
* Student grant for (python) documentation?
* Discuss about wiki clean-up/update (Anna was working on a list of pages)
* Website enhancements: complete open PR's, meet Daniel Torres, new support item in main menu
* Discuss State of GRASS presentation for FOSS4G 2023
* i.landsat if time permits
* ...

=== You ===

== Reports ==

=== Caitlin Haedrich ===
* Photos, social media and wiki page
* grass.jupyter:
** [https://github.com/OSGeo/grass/pull/2996 add feature for animating series of rasters]

=== Vaclav Petras ===

* Rename location to project
** [https://github.com/OSGeo/grass/pull/2993 wxGUI: Rename location to project #2993]
** Discussion
* Python API
** [https://github.com/OSGeo/grass/pull/2923 grass.experimental: Add object to access modules as functions #2923]
* CI
** [https://github.com/OSGeo/grass/pull/3002 CI: Switch Travis to Ubuntu 22.04 (jammmy) #3002]
* Reviews and merges:
** [https://github.com/OSGeo/grass/pull/2974 t.rast.algebra/testsuite: split file test_raster_algebra.py #2974]
** [https://github.com/OSGeo/grass/pull/2189 Imagery: add libsvm based imagery classification #2189]
** [https://github.com/OSGeo/grass-addons/pull/606 r.random.walk: Add module to create random walks #606]

=== Anna Petrasova ===
* [https://github.com/OSGeo/grass/pull/2992 Fix bug in querying]
* review, merge and backport of [https://github.com/OSGeo/grass/pull/2994 fix in datacatalog]
* review of [https://github.com/OSGeo/grass/pull/2520 wxGUI: fix show MASK statusbar button widget if mask is created]
* merge of [https://github.com/OSGeo/grass/pull/2667 wxGUI: adding a button for undocking an AuiNotebook tab to wx.Frame (Single-Window GUI)]
* edit [https://github.com/OSGeo/grass/pull/2990 check min required wx version when starting wxgui]

=== Maris Nartiss ===

* i.svm.* cleanup and preparation for a review
* A conceptual proposal for a new start up screen
* Initial version of imagery signature management module i.signatures
* Remove obsolete parts of locale README file
* Extract translatable messages also from C++ files

=== Micha Silver ===
Working on a new GRASS addon: r.optram
[https://github.com/micha-silver/grass-addons/tree/grass8/src/raster/r.optram the repo on github]

02/06: Initialize main file ''r.optram.py''

includes these functions:
# ''getImgList()'' - get list of IMG_FILEs in a Sentinel 2 SAFE Directory
# ''cropToAOI()'' - Crop the images to the Area of Interest
# ''prepareSTR()'' - Convert SWIR to the SWIR Transformed Reflectance
# ''prepareVI()'' - Prepare the (user chosen) vegetation index

03/06:
# Split to three modules: '''r.optram.preprocess, r.optram, r.optram.soilmoisture'''
# new function: ''prepareTrapezoid()'' - to get wet-dry regression lines and slope, intercept values

04/06
# ''prepareTrapezoid()'' function completed.
# (Joined video conf with Roger Bivand on R-GRASS integration.)

05/06
Initialize third file/function: ''r.optram.soilmoisture.py''
# ''createSoilMoisture()'' - creates new GRASS raster for a single date
# Add documentation to modules
# (joined video conf with Nyall Dawson)

TODO list:
* Read Sentinel cloud mask and mask out cloud pixels in '''r.optram.preprocess'''
* large study areas or very long time series will create a big numpy table of variables (vegetation index and STR). A possible solution:
# Determine some "reasonable" maximum size for the numpy table, depending on computer resources.
# Extract a subset of pixels from each raster in the time series, such that the total table pixel values will not exceed that maximum
# The size of the subset will be set by ("reasonable" max / number of rasters in time series)
# Allow user to determine "reasonable" max.
* Currently this addon consists of three sub-modules. Consider to consolidate to one.
* Improve HTML documentation

=== Luís de Sousa ===

==== Work on GRASS add-on [https://grass.osgeo.org/grass82/manuals/addons/r.mblend.html r.mblend] ====

* Module is still maintained and fully functional in GRASS 8.2 (now included in the [https://github.com/OSGeo/grass-addons GRASS global add-ons repository])
* However was not longer producing correct results due to new behaviour in '''v.what.rast'''
* Solution identified, using inner buffer to interpolation area ([https://github.com/OSGeo/grass-addons/pull/910 PR #910])
* A small unit test suite was developed ([https://github.com/OSGeo/grass-addons/pull/911 PR #911])

==== Documentation ====

* Expanded instructions on Pre-commit ([https://github.com/OSGeo/grass/pull/3006 PR #3006])
* Mini guidelines on unit tests for add-ons ([https://github.com/OSGeo/grass-addons/pull/916 PR #916])

=== Aaron Saw Min Sern ===

* Fix bug to complete r.univar parallelization. [https://github.com/OSGeo/grass/pull/2683 PR]

=== Martin Landa ===

* Check min required wx version when starting wxgui [https://github.com/OSGeo/grass/pull/2990 PR #2990]
* Graphical modeler: avoid overlapping module parameters [https://github.com/OSGeo/grass/issues/2991 PR #2991]
* Show ModelRelation in white on dark mode [https://github.com/OSGeo/grass/pull/2997 PR #2997]
* Add OSGeo4W workflow to compile Addons [https://github.com/OSGeo/grass-addons/pull/912 PR #912]
* Integrate Grapical Modeler into single window layout [https://github.com/OSGeo/grass/pull/3003 PR #3003]
* Graphical Modeler: fix command parsing in "add tool" dialog [https://github.com/OSGeo/grass/pull/3022 PR #3022]
* Describe required updates for new version for winGRASS [https://github.com/OSGeo/grass/issues/2406#issuecomment-1578303935 #2406]

=== Markus Neteler ===

* backport of "HTML header charset changed from ISO-8859-1 to UTF-8" [https://github.com/OSGeo/grass/pull/2547 PR #2547] to GRASS GIS 8.2.1 (fixing r.forcircular manual encoding bug)
* improve "Update alpine Docker tag to v3.18 [https://github.com/OSGeo/grass/pull/2953 PR #2953]
* backport of Alpine Dockerfile improvements
* discussion about "location/mapset" vs "project/..." terminology
* initial QGIS-GRASS update discussion
* Google Photo album feeds
* Use of [https://github.com/OSGeo/grass/blob/main/doc/development/submitting/submitting.md#use-pre-commit pre-commit] (recommended to all devs!)
* Participate in a two-hour meeting with Nyall Dawson (QGIS) and the GRASS Community about interfacing GRASS from QGIS
*
* GRASS GIS manual pages: re-styling and conversion of all pages to markdown:
** convert to markdown with pandoc (draft script see https://app.gitter.im/#/room/#grassgis_sprint:gitter.im discussion)
** using mkdocs (https://www.mkdocs.org/): it provides menus and a search window
** check: automatic formatting for mkdocs: https://github.com/KyleKing/mdformat-mkdocs

[[Image:Grass manual readthedocs.png|First attempt to convert the manual to Markdown/mkdocs|500px]]

=== Helmut Kudrnovsky ===

* discuss (win)GRASS-R issues [https://github.com/rsbivand/rgrass/issues/57 initGrass Error] and [https://github.com/OSGeo/grass/issues/2998 feature requests]

* Review and initial tests of PR [https://github.com/OSGeo/grass/pull/2684 compilation with cmake] on Windows

* Participated in a two-hour meeting with Roger, Floris, Vaclav, Anna, Micha, ..... about rgrass development

=== Ondřej Pešek ===

* gmodeler: add export to an actinia script: [https://github.com/OSGeo/grass/pull/3005 PR #3005]
* fix GRASS GIS broken for Python 3.12: [https://github.com/OSGeo/grass/pull/3009 PR #3009], [https://github.com/OSGeo/grass/pull/3010 PR #3010], [https://github.com/OSGeo/grass/pull/3011 PR #3011], [https://github.com/OSGeo/grass/pull/3018 PR #3018]
* fix GRASS GIS addons broken for Python 3.12: [https://github.com/OSGeo/grass-addons/pull/917 PR #917], [https://github.com/OSGeo/grass-addons/pull/918 PR #918], [https://github.com/OSGeo/grass-addons/pull/919 PR #919]

=== Floris Vanderhaeghe ===

* Explore reading straight from the GRASS database into R (https://github.com/rsbivand/rgrass/issues/75)
* Help Markus in improving the documentation of the GDAL-GRASS drivers (https://github.com/OSGeo/gdal-grass)
* Help arranging a meeting with Nyall Dawson for the QGIS GRASS interface
* Participate in a two-hour meeting with Roger Bivand, Vero Andreo, Vaclav, Anna, Helmut, Micha, ..... about rgrass development
* Draft and finalize the meeting minutes of the rgrass meeting
* Participate in a two-hour meeting with Nyall Dawson (QGIS) and the GRASS Community about interfacing GRASS from QGIS

=== Vero Andreo ===

* Participated in the discussion about renaming locations to projects
* Call with Paulo on diverse topics, r.niche.similarity PR revision and merge
* Participated in a two-hour meeting with Roger, Floris, Vaclav, Anna, Helmut, Micha, ..... about rgrass development
* Worked on GRASS Website:
** Apply fixes and merge the [https://github.com/OSGeo/grass-website/pull/362 DOI] and [https://github.com/OSGeo/grass-website/pull/364 first draft of sponsoring tiers] PRs
** Beautify tables and content of sponsoring page [https://github.com/OSGeo/grass-website/pull/368 #368]
** New menu and submenus (some reordered), please comment [https://github.com/OSGeo/grass-website/pull/369 #369]
** Created a news item about rgrass7 retirement with text snippet contributed by Roger Bivand [https://github.com/OSGeo/grass-website/pull/370 #370]
* Other minor revisions

=== Discussion with Nyall (QGIS) ===

* How to improve the integration
** save some of the existing code
** update "Processing" integration
** ...
* GRASS GIS Addon support in QGIS, see
** https://github.com/qgis/QGIS/pull/53048
** https://github.com/qgis/QGIS/pull/53049

GRASS Community Meeting Prague 2023

2023-06-05T15:32:33Z

⚠️Landa: /* Thanks to our sponsors */

{{toc|right}}
The GRASS GIS team is organizing the ''GRASS GIS Community Meeting with contributors, power users and developers'' from '''June 2 to June 6, 2023''' to celebrate GRASS GIS '''40th birthday''' (by contributing to GRASS GIS of course).

<gallery mode="slideshow">
Image:grass-sprint-prague.jpg|Prague 2013
Image:Grass_sprint2018_bonn_fotowall.jpg|Bonn 2018
</gallery>

== Purpose ==

GRASS GIS Community Meeting is a great occasion for folks to support the development by actively contributing to the source code, documentation (manuals, wiki, tutorials), translations, website or likewise. The '''community''' meeting is also a get-together where supporters, contributors, power users and developers make decisions and tackle larger problems related to the project, discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. We welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R, OGC Services and desiring to '''celebrate with us the 40th GRASS GIS birthday!!'''

In this meeting, we will work on GRASS GIS and integrations with related OSGeo projects. We will revise connection to QGIS to make it easier to maintain, and we will work on migration of the build to CMake to improve Windows builds including PDAL support. Furthermore, we will start moving documentation to Markdown to make it easier to contribute to and we will add images and examples for tools and workflows which still miss them. Finally, we will automate and document maintenance processes to reduce the burden on maintainers and thus improve the project sustainability.

Note that while we have our general plan, we can't accept any earmarked donations, i.e., we can't make any promises for a specific work to be done. We do require participants to work on GRASS GIS or connections to other projects. However, we leave them the freedom to work on what they think is the best contribution to the project at that time given their skills and time available.

For the detailed agenda and individual's plans, see below.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travel and accommodation expenses for GRASS developers who volunteer their time. If you are interested in sponsoring the GRASS Community Meeting, please see our

::: '''[https://opencollective.com/osgeo/projects/grass/contribute/grass-community-meeting-prague-2023-55074 OpenCollective GRASS Community Meeting Prague 2023 Tier]'''

Any surplus at the end of the event will used for future activities of the GRASS GIS project such as the successful [[Student Grants|student mini grant program]].

This GRASS Community Meeting is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. Community meetings are important opportunities for developers to discuss, fix bugs, plan the direction for the project and work on new features. Please see below for the detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community meeting will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Meeting:

[[File:Osgeo logo.png|none|left|alt=Light and dark green logo of OSGeo saying Your Open Source Compass|Open Source Geospatial Foundation]]
* [https://www.osgeo.org/ OSGeo]: 7303 USD (approved budget contribution, [https://www.loomio.com/p/2m75BZkL/motion-to-approve-7303-to-support-grass-gis-community-meeting motion])
* Twitter: [https://twitter.com/OSGeo/ @OSGeo] | [https://fosstodon.org/@osgeo @osgeo@fosstodon.org]

[[File:FOSSGIS_eV_logo.png|none|left|400px|alt=Logo of FOSSGIS e.V.|FOSSGIS e.V.]]
* [https://www.fossgis.de/ FOSSGIS e.V.]: 5000 EUR (approved budget contribution, [https://www.fossgis.de/wiki/F%C3%B6rderantr%C3%A4ge/GRASS_GIS_Community_Meeting_2023 request])
* Twitter: [https://twitter.com/FOSSGIS_Verein @FOSSGIS_Verein] | [https://mastodon.online/@FOSSGISeV/ @FOSSGISeV@mastodon.online]

[[File:OSGeo JP logo for web.png|none|left|400px|alt=OSGeo.JP]]
* [https://www.osgeo.jp/ OSGeo Japan]: 550 USD (through Open Collective)

Individuals:
* Hernán De Angelis 20 USD
* MarWe 50 USD
* Nick Brady 50 USD
* José Ramón 50 USD
* Johannes Brauner 30 USD
* Peter Löwe 30 USD
* Evan Kay 10 USD
* Joaquin Perez Valera 5 USD
* Anonymous sponsors 2750 USD

In-kind contributions:

* Department of Geomatics Faculty of Civil Engineering Czech Technical University in Prague (FCE CTU) - space and personnel time (planning, preparation)
* North Carolina State University - personnel time (planning, preparation)
* mundialis GmbH & Co. KG - personnel time (planning, preparation)
* CONICET - personnel time (planning, preparation)

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the meeting whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Thákurova 7/2077, Prague 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from, reimbursements depending on the financial contributions provided by the community
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/cs/financni-trhy/devizovy-trh/kurzy-devizoveho-trhu/kurzy-devizoveho-trhu/ current rates]).

Please let us know your time of arrival and departure, so we can book accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

During the meeting we will work on GRASS GIS on these tasks (please add more!):

* We will update and revise the [https://github.com/qgis/QGIS/tree/master/python/plugins/grassprovider GRASS GIS Integration with QGIS] to simplify maintenance.
* Furthermore, we will migrate the compilation technology to CMake to significantly improve the Windows builds including PDAL support and become binary compatible with OSGeo4W.
* The extensive GRASS documentation will be converted from HTML to Markdown to facilitate future collaboration.
* Pictures, examples and workflows will be added to the documentation where they are still missing.
* Software maintenance processes are automated and documented to reduce the burden on maintainers and thus improve the sustainability of the project.

This means that there are tasks from both the programming and documentation areas to appeal to a wide range of interested parties.

Further details about the action items you '''find [[Talk:GRASS Community Meeting Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

(agenda is under development, but also flexible)

==== Thursday, 1 June ====

* Arrival

==== Friday, 2 June ====

* 9:00 meeting starts in the room B-868
* Lunch: 12:45 NTK
* Review the plan for the next days
* API for use in Python and in other projects (e.g., QGIS)
* Parallelizations

==== Saturday, 3 June ====

* Reducing cost of distribution on Windows
* Convert GRASS GIS documentation from HTML to Markdown and implement new documentation system (mkdocs?)
* Group photo 1
* Outdoor social evening

==== Sunday, 4 June ====

* Compilation CMake (Windows, Linux)
* Connections in general, rgrass, qgisprocess
* GRASS GIS addons overview generator for entire GitHub (and more?) based on tag "[https://github.com/topics/grass-gis-addons grass-gis-addons]"
* Group photo 2

==== Monday, 5 June ====

* Connections in general, QGIS, rgrass, qgisprocess
* Parallelizations
* grass.jupyter

==== Tuesday, 6 June ====

* Connections in general, QGIS
* Parallelizations
* grass.jupyter

==== Wednesday, 7 June ====

* Departure

=== Social events ===

==== Friday, 2 June ====

Dinner at 7pm: [https://www.uveverky.com/kontakt/ U veverku pub] ([https://en.mapy.cz/s/jumomotupu map])

==== Saturday, 3 June ====

Dinner at 6pm: [https://unetickypivovar.cz/en Únětický pivovar] ([https://en.mapy.cz/s/mubutetoba map])

* 3:50pm train from Podbaba (15min walk) to Roztoky
* [https://en.mapy.cz/s/dabavojufa walk 1:30min]
* Bus (355) back from Unetice to Dejvicka: 21:57 or 23:18

==== Sunday, 4 June ====

Dinner at 7pm: [https://www.restauracevltava.cz/ Restaurace Vltava] ([https://en.mapy.cz/s/gonezofozo map])

==== Monday, 5 June ====

Dinner at 7pm: [https://www.my-paprika.com/ My Paprika] ([https://en.mapy.cz/s/modekehepu map])

* Tram 26 from Dejvicka to Strossmayerovo namesti at 6:26pm

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topics'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
| Czech Republic
| June 1
| June 7
| Python: create_location ([https://github.com/OSGeo/grass/issues/1987 #1987]), Graphical Modeler improvements and single window layout integration
|
|-
|2
| Micha Silver
| Israel
| June 2
| June 6
| Addon to derive soil moisture from Sentinel 2
|
|-
|3
|[https://www.osgeo.org/member/kudrnovsky/ Helmut Kudrnovsky]
| Austria
| June 2 (18:37) by train
| June 4 (18:24) by train
| support CMake transition
|
|-
|4
|[[User:Neteler|Markus Neteler]]
| Germany
| June 2 (17:17)
| June 6 (12:43)
| translations, manual pages, ..., see [[Talk:GRASS_Community_Meeting_Prague_2023#Markus_Neteler|my list in "Discussion" page]]
|
|-
|5
|[[User:pesekon2|Ondřej Pešek]]
| Czech Republic
| June 2 (17:17)
| June 6 (12:43)
| Python 3.12-connected issues, gmodeler
|
|-
|6
| [[User:helena|Helena Mitasova]]
| United States
| June 2
| June 6
|
|
|-
|7
| [[User:wenzeslaus|Vaclav Petras]]
| United States
| June 1
| June 7
| init and other Python API topics, support CMake transition, revise connection with QGIS and other tools, funding
|
|-
|8
| [[User:Annakrat|Anna Petrasova]]
| United States
| June 1
| June 7
| parallelization documentation, grass.jupyter, R and QGIS integration
|
|-
|9
| [[User:Ctwhite|Corey White]]
| United States
| June 2 (10:55)
| June 7
| Connections with other tools, OpenPlains, JSON outputs
|
|-
|10
| [[User:MarisN|Maris Nartiss]]
| Latvia
| June 2 (14:30)
| June 6 (12:00)
| Improvements of imagery modules (push i.svm.*; i.signatures; ?)
|-
|11
| [[User:Aaronsms|Aaron Saw Min Sern]]
| Singapore
| June 1
| June 7
| Support CMake transition, r.mapcalc parallelization
|
|-
|12
| [[User:Ldesousa|Luís de Sousa]]
| The Netherlands
| June 1 (20:00)
| June 5 (20:45)
| Update r.mblend add-on; test CMake transition.
|
|-
|13
| Caitlin Haedrich
| United States
| June 1
| June 7
| grass.jupyter
|
|-
|14
| Linda Kladivová
| Czech Republic
| June 2
| June 6
| Single-Window layout issues and improvements
|
|-
|15
| Carmen Tawalika
| Germany
| June 2 (17:17)
| June 6 (12:43)
| Happy to assist with general topics like documentation + automation, in doubt something related to actinia
|
|-
|16
| Floris Vanderhaeghe
| Belgium
| June 3 (train 19:17)
| June 6 (train 8:25)
| Helping in interfacing GRASS from R (rgrass & qgisprocess packages)
|
|-
|}

If you are arriving or departing on the days of the event, please specify the time, too.

=== Via chat or hangout ===

Join our [https://app.gitter.im/#/room/#grassgis_community:gitter.im Gitter chatroom]

Gitter has a video (and backup will be Zoom).

Participating virtually:

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!'''Topics'''
!'''Times, synchronous or fully asynchronous'''
!'''Notes'''
|-
|1
|[[User:Baharmon|Brendan Harmon]]
| United States
| Update integration with QGIS
| Available 8:00 AM CST (UTC-6) onwards
|
|-
|2
|[[User:veroandreo|Veronica Andreo]]
| Argentina
| Mission and vision, interfaces with QGIS and R, sponsoring, ... [https://grasswiki.osgeo.org/wiki/Talk:GRASS_Community_Meeting_Prague_2023#Vero see discussion tab]
| available from 8:00 AM ART (UTC-3) onward
|
|-
|3
|[[User:Nobeeakon|Daniel T]]
| Mexico
|
| some availability through the days :/
|
|-
|4
|[[User:LBartoletti|Loïc Bartoletti]]
| France
| QGIS Integration, support CMake transition
|
|-
|}

==== Timing of hangout meetings ====

Vero: available from 8:00 AM ART (UTC-3) onward

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install git and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :) Find the latest information on the [https://matrix.to/#/#grassgis_sprint:gitter.im Gitter Channel].

== Photos ==
Day 1
<gallery mode="slideshow">
Image:Devs at work.jpg|Hard at work on the first day
Image:Lively discussion.jpg|Lively discussion
Image:Dinner day 1.jpg|Dinner at a nearby pub
</gallery>

Day 2
<gallery mode="slideshow">
Image:Prague-Community-Meeting-2023.jpg|Group photo
Image:PXL 20230603 085440353.jpg|A full table on day 2
Image:GRASS-smiles.jpg|GRASS GIS development brings smiles
Image:Day2-pizza.jpg|Pizza fuels work!
Image:Day2-collaboration.jpg|Afternoon working and collaborating
Image:Group-photo-hike.jpg|View at Alšova vyhlídka on the way to Únětický pivovar (brewery)
Image:Únětický pivovar.jpg|Beer at Únětický pivovar, a 300-year-old brewery, after a day of hard work
</gallery>

Day 3
<gallery mode="slideshow">
Image:Day3-working.jpg|Working on new features, bug fixes, documentation and more..
Image:Day3-table.jpg|An even fuller table on day 3
Image:Day3-collaboration.jpg|Collaboration and discussion
Image:Beer-pano-day3.jpg|Panoramic photo of a cheers to GRASS's 40th Birthday at Vitala restaurant
</gallery>

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS_GIS at OSGeo Virtual Community Sprint 2020]]!
* ''Is the GRASS Community Meeting just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software.
* ''Is the GRASS Community Meeting for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community meeting?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Report and press release ==

TBD: After the event :-)

We'll esp. craft a report for our sponsors.

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

Talk:GRASS Community Meeting Prague 2023

2023-06-05T12:21:49Z

⚠️Landa: /* Martin Landa */

__TOC__

== Tasks for participants ==

* Create section for you in the Reports section.
* List all the things you are working on in the section. Update the list each day. Include things you work on with other people.
* Link the [https://github.com/orgs/OSGeo/projects/1/ GRASS Community Meeting Prague 2023] project on GitHub to each PR or issue you are working on or plan to be working on.
* If you are or will be working on an issue or on a PR which is not originally submitted by you, assign yourself to the issue or PR. (You can unassign yourself later if you change your mind.)

== Planning and organizing ==

* Initial planning: Veronica Andreo, Martin Landa, Vaclav Petras, Helmut Kudrnovsky, Anna Petrasova, Huidae Cho, Markus Neteler, Helena Mitasova, Micha Silver, Linda Kladivova
* Funding acquisition: Veronica Andreo, Markus Neteler, Vaclav Petras, Anna Petrasova, Huidae Cho, Luca Delucchi, Venkatesh Raghavan
* Budget: Vaclav Petras, Markus Neteler, Veronica Andreo
* Venue and local organizing: Martin Landa
* T-shirts, hoodies, stickers: Vaclav Petras, Anna Petrasova
* Promotion, invitations, and social media: Caitlin Haedrich, Veronica Andreo, Vaclav Petras
* Wiki page: Martin Landa, Markus Neteler, Vaclav Petras, Veronica Andreo
* Virtual meeting organizing: Veronica Andreo
* Photography: Caitlin Haedrich

== Ideas for the meeting agenda ==

Collect ideas here :-)

=== Markus Neteler ===

* Improve QGIS-GRASS GIS integration; update of provider to GRASS GIS 8
* GRASS GIS addons overview generator for entire GitHub (and more?) based on tag "[https://github.com/topics/grass-gis-addons grass-gis-addons]"
* Discuss about a 4th edition of "Open Source GIS: A GRASS GIS Approach"
* message translation: Easy [https://docs.weblate.org/en/latest/user/translating.html#machine-translation machine translation] of messages in [https://weblate.osgeo.org/translate/grass-gis OSGeo-Weblate] with DeepL API
** my tests with DeepL show that the quality is very good; average translation time of a user message shrinks to 15 seconds {{done}}
** note: one needs to login to Weblate to see the "Automatic suggestion" button (using the OSGeo-ID)
* Fix docs:
** Provide better explanation for radius parameter for r.resamp.filter: https://github.com/OSGeo/grass/issues/2569
** improve v.clean docs

=== Vero ===

* '''All - think about GRASS GIS mission and vision''': Where do we want to be as a project in 5 years time? What do we want to have? What do we want to be?
* Participate in discussions about GRASS interfaces with QGIS and R (rgrass)
* Discuss sponsoring
* Student grant for (python) documentation?
* Discuss about wiki clean-up/update (Anna was working on a list of pages)
* Website enhancements: complete open PR's, meet Daniel Torres, new support item in main menu
* Discuss State of GRASS presentation for FOSS4G 2023
* i.landsat if time permits
* ...

=== You ===

== Reports ==

=== Caitlin Haedrich ===
* Photos, social media and wiki page
* grass.jupyter:
** [https://github.com/OSGeo/grass/pull/2996 add feature for animating series of rasters]

=== Vaclav Petras ===

* Rename location to project
** [https://github.com/OSGeo/grass/pull/2993 wxGUI: Rename location to project #2993]
** Discussion
* Python API
** [https://github.com/OSGeo/grass/pull/2923 grass.experimental: Add object to access modules as functions #2923]
* CI
** [https://github.com/OSGeo/grass/pull/3002 CI: Switch Travis to Ubuntu 22.04 (jammmy) #3002]
* Reviews and merges:
** [https://github.com/OSGeo/grass/pull/2974 t.rast.algebra/testsuite: split file test_raster_algebra.py #2974]
** [https://github.com/OSGeo/grass/pull/2189 Imagery: add libsvm based imagery classification #2189]
** [https://github.com/OSGeo/grass-addons/pull/606 r.random.walk: Add module to create random walks #606]

=== Anna Petrasova ===
* [https://github.com/OSGeo/grass/pull/2992 Fix bug in querying]
* review, merge and backport of [https://github.com/OSGeo/grass/pull/2994 fix in datacatalog]
* review of [https://github.com/OSGeo/grass/pull/2520 wxGUI: fix show MASK statusbar button widget if mask is created]
* merge of [https://github.com/OSGeo/grass/pull/2667 wxGUI: adding a button for undocking an AuiNotebook tab to wx.Frame (Single-Window GUI)]
* edit [https://github.com/OSGeo/grass/pull/2990 check min required wx version when starting wxgui]

=== Maris Nartiss ===

* i.svm.* cleanup and preparation for a review
* A conceptual proposal for a new start up screen
* Initial version of imagery signature management module i.signatures
* Remove obsolete parts of locale README file

=== Micha Silver ===
Working on a new GRASS addon: r.optram
[https://github.com/micha-silver/grass-addons/tree/grass8/src/raster/r.optram the repo on github]

02/06: Initialize main file ''r.optram.py''

includes these functions:
# ''getImgList()'' - get list of IMG_FILEs in a Sentinel 2 SAFE Directory
# ''cropToAOI()'' - Crop the images to the Area of Interest
# ''prepareSTR()'' - Convert SWIR to the SWIR Transformed Reflectance
# ''prepareVI()'' - Prepare the (user chosen) vegetation index

03/06:
# Split to three modules: '''r.optram.preprocess, r.optram, r.optram.soilmoisture'''
# new function: ''prepareTrapezoid()'' - to get wet-dry regression lines and slope, intercept values

04/06
# ''prepareTrapezoid()'' function completed.
# (Joined video conf with Roger Bivand on R-GRASS integration.)

05/06
Initialize third file/function: ''r.optram.soilmoisture.py''
# ''createSoilMoisture()'' - creates new GRASS raster for a single date
# Add documentation to modules

TODO list:
* Read Sentinel cloud mask and mask out cloud pixels in '''r.optram.preprocess'''
* large study areas or very long time series will create a big numpy table of variables (vegetation index and STR). A possible solution:
# Determine some "reasonable" maximum size for the numpy table, depending on computer resources.
# Extract a subset of pixels from each raster in the time series, such that the total table pixel values will not exceed that maximum
# The size of the subset will be set by ("reasonable" max / number of rasters in time series)
# Allow user to determine "reasonable" max.
* Currently this addon consists of three sub-modules. Consider to consolidate to one.

=== Luís de Sousa ===

==== Work on GRASS add-on [https://grass.osgeo.org/grass82/manuals/addons/r.mblend.html r.mblend] ====

* Module is still maintained and fully functional in GRASS 8.2 (now included in the [https://github.com/OSGeo/grass-addons GRASS global add-ons repository])
* However was not longer producing correct results due to new behaviour in '''v.what.rast'''
* Solution identified, using inner buffer to interpolation area ([https://github.com/OSGeo/grass-addons/pull/910 PR #910])
* A small unit test suite was developed ([https://github.com/OSGeo/grass-addons/pull/911 PR #911])

==== Documentation ====

* Expanded instructions on Pre-commit ([https://github.com/OSGeo/grass/pull/3006 PR #3006])
* Mini guidelines on unit tests for add-ons ([https://github.com/OSGeo/grass-addons/pull/916 PR #916])

=== Aaron Saw Min Sern ===

* Fix bug to complete r.univar parallelization. [https://github.com/OSGeo/grass/pull/2683 PR]

=== Martin Landa ===

* Check min required wx version when starting wxgui [https://github.com/OSGeo/grass/pull/2990 PR #2990]
* Graphical modeler: avoid overlapping module parameters [https://github.com/OSGeo/grass/issues/2991 PR #2991]
* Show ModelRelation in white on dark mode [https://github.com/OSGeo/grass/pull/2997 PR #2997]
* Add OSGeo4W workflow to compile Addons [https://github.com/OSGeo/grass-addons/pull/912 PR #912]
* Integrate Grapical Modeler into single window layout [https://github.com/OSGeo/grass/pull/3003 PR #3003]
* Graphical Modeler: fix command parsing in "add tool" dialog [https://github.com/OSGeo/grass/pull/3022 PR #3022]

=== Markus Neteler ===

* backport of "HTML header charset changed from ISO-8859-1 to UTF-8" [https://github.com/OSGeo/grass/pull/2547 PR #2547] to GRASS GIS 8.2.1 (fixing r.forcircular manual encoding bug)
* improve "Update alpine Docker tag to v3.18 [https://github.com/OSGeo/grass/pull/2953 PR #2953]
* backport of Alpine Dockerfile improvements
* discussion about "location/mapset" vs "project/..." terminology
* initial QGIS-GRASS update discussion
* Google Photo album feeds
* Use of [https://github.com/OSGeo/grass/blob/main/doc/development/submitting/submitting.md#use-pre-commit pre-commit] (recommended to all devs!)
* GRASS GIS manual pages: re-styling and conversion of all pages to markdown:
** convert to markdown with pandoc (draft script see https://app.gitter.im/#/room/#grassgis_sprint:gitter.im discussion)
** using mkdocs (https://www.mkdocs.org/): it provides menus and a search window
** check: automatic formatting for mkdocs: https://github.com/KyleKing/mdformat-mkdocs

=== Helmut Kudrnovsky ===

* discuss (win)GRASS-R issues [https://github.com/rsbivand/rgrass/issues/57 initGrass Error] and [https://github.com/OSGeo/grass/issues/2998 feature requests]

* Review and initial tests of PR [https://github.com/OSGeo/grass/pull/2684 compilation with cmake] on Windows

* Participated in a two-hour meeting with Roger, Floris, Vaclav, Anna, Micha, ..... about rgrass development

=== Ondřej Pešek ===

* gmodeler: add export to an actinia script: [https://github.com/OSGeo/grass/pull/3005 PR #3005]
* fix GRASS GIS broken for Python 3.12: [https://github.com/OSGeo/grass/pull/3009 PR #3009], [https://github.com/OSGeo/grass/pull/3010 PR #3010], [https://github.com/OSGeo/grass/pull/3011 PR #3011], [https://github.com/OSGeo/grass/pull/3018 PR #3018]
* fix GRASS GIS addons broken for Python 3.12: [https://github.com/OSGeo/grass-addons/pull/917 PR #917]

=== Floris Vanderhaeghe ===

* Explore reading straight from the GRASS database into R (https://github.com/rsbivand/rgrass/issues/75)
* Help arranging a meeting with Nyall Dawson for the QGIS GRASS interface
* Participate in a two-hour meeting with Roger Bivand, Vero Andreo, Vaclav, Anna, Helmut, Micha, ..... about rgrass development
* Participate in a two-hour meeting with Nyall Dawson (QGIS) and the GRASS Community about interfacing GRASS from QGIS

=== Vero Andreo ===

* Participated in the discussion about renaming locations to projects
* Call with Paulo on diverse topics, r.niche.similarity PR revision and merge
* Participated in a two-hour meeting with Roger, Floris, Vaclav, Anna, Helmut, Micha, ..... about rgrass development
* Worked on GRASS Website:
** Apply fixes and merge the [https://github.com/OSGeo/grass-website/pull/362 DOI] and [https://github.com/OSGeo/grass-website/pull/364 first draft of sponsoring tiers] PRs
** Beautify tables and content of sponsoring page [https://github.com/OSGeo/grass-website/pull/368 #368]
** New menu and submenus (some reordered), please comment [https://github.com/OSGeo/grass-website/pull/369 #369]
* Other minor revisions

=== Discussion with Nyall (QGIS) ===

* How to improve the integration
** save some of the existing code
** update "Processing" integration
** ...
* GRASS GIS Addon support in QGIS, see
** https://github.com/qgis/QGIS/pull/53048
** https://github.com/qgis/QGIS/pull/53049

GRASS Community Meeting Prague 2023

2023-06-05T12:08:38Z

⚠️Landa: /* Monday, 5 June */

{{toc|right}}
The GRASS GIS team is organizing the ''GRASS GIS Community Meeting with contributors, power users and developers'' from '''June 2 to June 6, 2023''' to celebrate GRASS GIS '''40th birthday''' (by contributing to GRASS GIS of course).

<gallery mode="slideshow">
Image:grass-sprint-prague.jpg|Prague 2013
Image:Grass_sprint2018_bonn_fotowall.jpg|Bonn 2018
</gallery>

== Purpose ==

GRASS GIS Community Meeting is a great occasion for folks to support the development by actively contributing to the source code, documentation (manuals, wiki, tutorials), translations, website or likewise. The '''community''' meeting is also a get-together where supporters, contributors, power users and developers make decisions and tackle larger problems related to the project, discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. We welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R, OGC Services and desiring to '''celebrate with us the 40th GRASS GIS birthday!!'''

In this meeting, we will work on GRASS GIS and integrations with related OSGeo projects. We will revise connection to QGIS to make it easier to maintain, and we will work on migration of the build to CMake to improve Windows builds including PDAL support. Furthermore, we will start moving documentation to Markdown to make it easier to contribute to and we will add images and examples for tools and workflows which still miss them. Finally, we will automate and document maintenance processes to reduce the burden on maintainers and thus improve the project sustainability.

Note that while we have our general plan, we can't accept any earmarked donations, i.e., we can't make any promises for a specific work to be done. We do require participants to work on GRASS GIS or connections to other projects. However, we leave them the freedom to work on what they think is the best contribution to the project at that time given their skills and time available.

For the detailed agenda and individual's plans, see below.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travel and accommodation expenses for GRASS developers who volunteer their time. If you are interested in sponsoring the GRASS Community Meeting, please see our

::: '''[https://opencollective.com/osgeo/projects/grass/contribute/grass-community-meeting-prague-2023-55074 OpenCollective GRASS Community Meeting Prague 2023 Tier]'''

Any surplus at the end of the event will used for future activities of the GRASS GIS project such as the successful [[Student Grants|student mini grant program]].

This GRASS Community Meeting is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. Community meetings are important opportunities for developers to discuss, fix bugs, plan the direction for the project and work on new features. Please see below for the detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community meeting will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Meeting:

[[File:Osgeo logo.png|none|left|alt=Light and dark green logo of OSGeo saying Your Open Source Compass|Open Source Geospatial Foundation]]
* [https://www.osgeo.org/ OSGeo]: 7303 USD (approved budget contribution, [https://www.loomio.com/p/2m75BZkL/motion-to-approve-7303-to-support-grass-gis-community-meeting motion])
* Twitter: [https://twitter.com/OSGeo/ @OSGeo] | [https://fosstodon.org/@osgeo @osgeo@fosstodon.org]

[[File:FOSSGIS_eV_logo.png|none|left|400px|alt=Logo of FOSSGIS e.V.|FOSSGIS e.V.]]
* [https://www.fossgis.de/ FOSSGIS e.V.]: 5000 EUR (approved budget contribution, [https://www.fossgis.de/wiki/F%C3%B6rderantr%C3%A4ge/GRASS_GIS_Community_Meeting_2023 request])
* Twitter: [https://twitter.com/FOSSGIS_Verein @FOSSGIS_Verein] | [https://mastodon.online/@FOSSGISeV/ @FOSSGISeV@mastodon.online]

[[File:OSGeo JP logo for web.png|none|left|400px|alt=OSGeo.JP]]
* [https://www.osgeo.jp/ OSGeo Japan]: 550 USD (through Open Collective)

Individuals:
* Hernán De Angelis 20 USD
* MarWe 50 USD
* Nick Brady 50 USD
* José Ramón 50 USD
* Johannes Brauner 30 USD
* Peter Löwe 30 USD
* Evan Kay 10 USD
* Joaquin Perez Valera 5 USD
* Anonymous sponsors 2750 USD

In-kind contributions:

* Faculty of Civil Engineering Czech Technical University in Prague (FCE CTU) - space and personnel time (planning, preparation)
* North Carolina State University - personnel time (planning, preparation)
* mundialis GmbH & Co. KG - personnel time (planning, preparation)
* CONICET - personnel time (planning, preparation)

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the meeting whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Thákurova 7/2077, Prague 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from, reimbursements depending on the financial contributions provided by the community
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/cs/financni-trhy/devizovy-trh/kurzy-devizoveho-trhu/kurzy-devizoveho-trhu/ current rates]).

Please let us know your time of arrival and departure, so we can book accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

During the meeting we will work on GRASS GIS on these tasks (please add more!):

* We will update and revise the [https://github.com/qgis/QGIS/tree/master/python/plugins/grassprovider GRASS GIS Integration with QGIS] to simplify maintenance.
* Furthermore, we will migrate the compilation technology to CMake to significantly improve the Windows builds including PDAL support and become binary compatible with OSGeo4W.
* The extensive GRASS documentation will be converted from HTML to Markdown to facilitate future collaboration.
* Pictures, examples and workflows will be added to the documentation where they are still missing.
* Software maintenance processes are automated and documented to reduce the burden on maintainers and thus improve the sustainability of the project.

This means that there are tasks from both the programming and documentation areas to appeal to a wide range of interested parties.

Further details about the action items you '''find [[Talk:GRASS Community Meeting Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

(agenda is under development, but also flexible)

==== Thursday, 1 June ====

* Arrival

==== Friday, 2 June ====

* 9:00 meeting starts in the room B-868
* Lunch: 12:45 NTK
* Review the plan for the next days
* API for use in Python and in other projects (e.g., QGIS)
* Parallelizations

==== Saturday, 3 June ====

* Reducing cost of distribution on Windows
* Convert GRASS GIS documentation from HTML to Markdown and implement new documentation system (mkdocs?)
* Group photo 1
* Outdoor social evening

==== Sunday, 4 June ====

* Compilation CMake (Windows, Linux)
* Connections in general, rgrass, qgisprocess
* GRASS GIS addons overview generator for entire GitHub (and more?) based on tag "[https://github.com/topics/grass-gis-addons grass-gis-addons]"
* Group photo 2

==== Monday, 5 June ====

* Connections in general, QGIS, rgrass, qgisprocess
* Parallelizations
* grass.jupyter

==== Tuesday, 6 June ====

* Connections in general, QGIS
* Parallelizations
* grass.jupyter

==== Wednesday, 7 June ====

* Departure

=== Social events ===

==== Friday, 2 June ====

Dinner at 7pm: [https://www.uveverky.com/kontakt/ U veverku pub] ([https://en.mapy.cz/s/jumomotupu map])

==== Saturday, 3 June ====

Dinner at 6pm: [https://unetickypivovar.cz/en Únětický pivovar] ([https://en.mapy.cz/s/mubutetoba map])

* 3:50pm train from Podbaba (15min walk) to Roztoky
* [https://en.mapy.cz/s/dabavojufa walk 1:30min]
* Bus (355) back from Unetice to Dejvicka: 21:57 or 23:18

==== Sunday, 4 June ====

Dinner at 7pm: [https://www.restauracevltava.cz/ Restaurace Vltava] ([https://en.mapy.cz/s/gonezofozo map])

==== Monday, 5 June ====

Dinner at 7pm: [https://www.my-paprika.com/ My Paprika] ([https://en.mapy.cz/s/modekehepu map])

* Tram 26 from Dejvicka to Strossmayerovo namesti at 6:26pm

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topics'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
| Czech Republic
| June 1
| June 7
| Python: create_location ([https://github.com/OSGeo/grass/issues/1987 #1987]), Graphical Modeler improvements and single window layout integration
|
|-
|2
| Micha Silver
| Israel
| June 2
| June 6
| Addon to derive soil moisture from Sentinel 2
|
|-
|3
|[https://www.osgeo.org/member/kudrnovsky/ Helmut Kudrnovsky]
| Austria
| June 2 (18:37) by train
| June 4 (18:24) by train
| support CMake transition
|
|-
|4
|[[User:Neteler|Markus Neteler]]
| Germany
| June 2 (17:17)
| June 6 (12:43)
| translations, manual pages, ..., see [[Talk:GRASS_Community_Meeting_Prague_2023#Markus_Neteler|my list in "Discussion" page]]
|
|-
|5
|[[User:pesekon2|Ondřej Pešek]]
| Czech Republic
| June 2 (17:17)
| June 6 (12:43)
| Python 3.12-connected issues, gmodeler
|
|-
|6
| [[User:helena|Helena Mitasova]]
| United States
| June 2
| June 6
|
|
|-
|7
| [[User:wenzeslaus|Vaclav Petras]]
| United States
| June 1
| June 7
| init and other Python API topics, support CMake transition, revise connection with QGIS and other tools, funding
|
|-
|8
| [[User:Annakrat|Anna Petrasova]]
| United States
| June 1
| June 7
| parallelization documentation, grass.jupyter, R and QGIS integration
|
|-
|9
| [[User:Ctwhite|Corey White]]
| United States
| June 2 (10:55)
| June 7
| Connections with other tools, OpenPlains, JSON outputs
|
|-
|10
| [[User:MarisN|Maris Nartiss]]
| Latvia
| June 2 (14:30)
| June 6 (12:00)
| Improvements of imagery modules (push i.svm.*; i.signatures; ?)
|-
|11
| [[User:Aaronsms|Aaron Saw Min Sern]]
| Singapore
| June 1
| June 7
| Support CMake transition, r.mapcalc parallelization
|
|-
|12
| [[User:Ldesousa|Luís de Sousa]]
| The Netherlands
| June 1 (20:00)
| June 5 (20:45)
| Update r.mblend add-on; test CMake transition.
|
|-
|13
| Caitlin Haedrich
| United States
| June 1
| June 7
| grass.jupyter
|
|-
|14
| Linda Kladivová
| Czech Republic
| June 2
| June 6
| Single-Window layout issues and improvements
|
|-
|15
| Carmen Tawalika
| Germany
| June 2 (17:17)
| June 6 (12:43)
| Happy to assist with general topics like documentation + automation, in doubt something related to actinia
|
|-
|16
| Floris Vanderhaeghe
| Belgium
| June 3 (train 19:17)
| June 6 (train 8:25)
| Helping in interfacing GRASS from R (rgrass & qgisprocess packages)
|
|-
|}

If you are arriving or departing on the days of the event, please specify the time, too.

=== Via chat or hangout ===

Join our [https://app.gitter.im/#/room/#grassgis_community:gitter.im Gitter chatroom]

Gitter has a video (and backup will be Zoom).

Participating virtually:

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!'''Topics'''
!'''Times, synchronous or fully asynchronous'''
!'''Notes'''
|-
|1
|[[User:Baharmon|Brendan Harmon]]
| United States
| Update integration with QGIS
| Available 8:00 AM CST (UTC-6) onwards
|
|-
|2
|[[User:veroandreo|Veronica Andreo]]
| Argentina
| Mission and vision, interfaces with QGIS and R, sponsoring, ... [https://grasswiki.osgeo.org/wiki/Talk:GRASS_Community_Meeting_Prague_2023#Vero see discussion tab]
| available from 8:00 AM ART (UTC-3) onward
|
|-
|3
|[[User:Nobeeakon|Daniel T]]
| Mexico
|
| some availability through the days :/
|
|-
|4
|[[User:LBartoletti|Loïc Bartoletti]]
| France
| QGIS Integration, support CMake transition
|
|-
|}

==== Timing of hangout meetings ====

Vero: available from 8:00 AM ART (UTC-3) onward

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install git and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :) Find the latest information on the [https://matrix.to/#/#grassgis_sprint:gitter.im Gitter Channel].

== Photos ==
Day 1
<gallery mode="slideshow">
Image:Devs at work.jpg|Hard at work on the first day
Image:Lively discussion.jpg|Lively discussion
Image:Dinner day 1.jpg|Dinner at a nearby pub
</gallery>

Day 2
<gallery mode="slideshow">
Image:Prague-Community-Meeting-2023.jpg|Group photo
Image:PXL 20230603 085440353.jpg|A full table on day 2
Image:GRASS-smiles.jpg|GRASS GIS development brings smiles
Image:Day2-pizza.jpg|Pizza fuels work!
Image:Day2-collaboration.jpg|Afternoon working and collaborating
Image:Group-photo-hike.jpg|View at Alšova vyhlídka on the way to Únětický pivovar (brewery)
Image:Únětický pivovar.jpg|Beer at Únětický pivovar, a 300-year-old brewery, after a day of hard work
</gallery>

Day 3
<gallery mode="slideshow">
Image:Day3-working.jpg|Working on new features, bug fixes, documentation and more..
Image:Day3-table.jpg|An even fuller table on day 3
Image:Day3-collaboration.jpg|Collaboration and discussion
Image:Beer-pano-day3.jpg|Panoramic photo of a cheers to GRASS's 40th Birthday at Vitala restaurant
</gallery>

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS_GIS at OSGeo Virtual Community Sprint 2020]]!
* ''Is the GRASS Community Meeting just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software.
* ''Is the GRASS Community Meeting for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community meeting?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Report and press release ==

TBD: After the event :-)

We'll esp. craft a report for our sponsors.

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

GRASS Community Meeting Prague 2023

2023-06-05T12:05:13Z

⚠️Landa: /* Social events */

{{toc|right}}
The GRASS GIS team is organizing the ''GRASS GIS Community Meeting with contributors, power users and developers'' from '''June 2 to June 6, 2023''' to celebrate GRASS GIS '''40th birthday''' (by contributing to GRASS GIS of course).

<gallery mode="slideshow">
Image:grass-sprint-prague.jpg|Prague 2013
Image:Grass_sprint2018_bonn_fotowall.jpg|Bonn 2018
</gallery>

== Purpose ==

GRASS GIS Community Meeting is a great occasion for folks to support the development by actively contributing to the source code, documentation (manuals, wiki, tutorials), translations, website or likewise. The '''community''' meeting is also a get-together where supporters, contributors, power users and developers make decisions and tackle larger problems related to the project, discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. We welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R, OGC Services and desiring to '''celebrate with us the 40th GRASS GIS birthday!!'''

In this meeting, we will work on GRASS GIS and integrations with related OSGeo projects. We will revise connection to QGIS to make it easier to maintain, and we will work on migration of the build to CMake to improve Windows builds including PDAL support. Furthermore, we will start moving documentation to Markdown to make it easier to contribute to and we will add images and examples for tools and workflows which still miss them. Finally, we will automate and document maintenance processes to reduce the burden on maintainers and thus improve the project sustainability.

Note that while we have our general plan, we can't accept any earmarked donations, i.e., we can't make any promises for a specific work to be done. We do require participants to work on GRASS GIS or connections to other projects. However, we leave them the freedom to work on what they think is the best contribution to the project at that time given their skills and time available.

For the detailed agenda and individual's plans, see below.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travel and accommodation expenses for GRASS developers who volunteer their time. If you are interested in sponsoring the GRASS Community Meeting, please see our

::: '''[https://opencollective.com/osgeo/projects/grass/contribute/grass-community-meeting-prague-2023-55074 OpenCollective GRASS Community Meeting Prague 2023 Tier]'''

Any surplus at the end of the event will used for future activities of the GRASS GIS project such as the successful [[Student Grants|student mini grant program]].

This GRASS Community Meeting is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. Community meetings are important opportunities for developers to discuss, fix bugs, plan the direction for the project and work on new features. Please see below for the detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community meeting will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Meeting:

[[File:Osgeo logo.png|none|left|alt=Light and dark green logo of OSGeo saying Your Open Source Compass|Open Source Geospatial Foundation]]
* [https://www.osgeo.org/ OSGeo]: 7303 USD (approved budget contribution, [https://www.loomio.com/p/2m75BZkL/motion-to-approve-7303-to-support-grass-gis-community-meeting motion])
* Twitter: [https://twitter.com/OSGeo/ @OSGeo] | [https://fosstodon.org/@osgeo @osgeo@fosstodon.org]

[[File:FOSSGIS_eV_logo.png|none|left|400px|alt=Logo of FOSSGIS e.V.|FOSSGIS e.V.]]
* [https://www.fossgis.de/ FOSSGIS e.V.]: 5000 EUR (approved budget contribution, [https://www.fossgis.de/wiki/F%C3%B6rderantr%C3%A4ge/GRASS_GIS_Community_Meeting_2023 request])
* Twitter: [https://twitter.com/FOSSGIS_Verein @FOSSGIS_Verein] | [https://mastodon.online/@FOSSGISeV/ @FOSSGISeV@mastodon.online]

[[File:OSGeo JP logo for web.png|none|left|400px|alt=OSGeo.JP]]
* [https://www.osgeo.jp/ OSGeo Japan]: 550 USD (through Open Collective)

Individuals:
* Hernán De Angelis 20 USD
* MarWe 50 USD
* Nick Brady 50 USD
* José Ramón 50 USD
* Johannes Brauner 30 USD
* Peter Löwe 30 USD
* Evan Kay 10 USD
* Joaquin Perez Valera 5 USD
* Anonymous sponsors 2750 USD

In-kind contributions:

* Faculty of Civil Engineering Czech Technical University in Prague (FCE CTU) - space and personnel time (planning, preparation)
* North Carolina State University - personnel time (planning, preparation)
* mundialis GmbH & Co. KG - personnel time (planning, preparation)
* CONICET - personnel time (planning, preparation)

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the meeting whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Thákurova 7/2077, Prague 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from, reimbursements depending on the financial contributions provided by the community
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/cs/financni-trhy/devizovy-trh/kurzy-devizoveho-trhu/kurzy-devizoveho-trhu/ current rates]).

Please let us know your time of arrival and departure, so we can book accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

During the meeting we will work on GRASS GIS on these tasks (please add more!):

* We will update and revise the [https://github.com/qgis/QGIS/tree/master/python/plugins/grassprovider GRASS GIS Integration with QGIS] to simplify maintenance.
* Furthermore, we will migrate the compilation technology to CMake to significantly improve the Windows builds including PDAL support and become binary compatible with OSGeo4W.
* The extensive GRASS documentation will be converted from HTML to Markdown to facilitate future collaboration.
* Pictures, examples and workflows will be added to the documentation where they are still missing.
* Software maintenance processes are automated and documented to reduce the burden on maintainers and thus improve the sustainability of the project.

This means that there are tasks from both the programming and documentation areas to appeal to a wide range of interested parties.

Further details about the action items you '''find [[Talk:GRASS Community Meeting Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

(agenda is under development, but also flexible)

==== Thursday, 1 June ====

* Arrival

==== Friday, 2 June ====

* 9:00 meeting starts in the room B-868
* Lunch: 12:45 NTK
* Review the plan for the next days
* API for use in Python and in other projects (e.g., QGIS)
* Parallelizations

==== Saturday, 3 June ====

* Reducing cost of distribution on Windows
* Convert GRASS GIS documentation from HTML to Markdown and implement new documentation system (mkdocs?)
* Group photo 1
* Outdoor social evening

==== Sunday, 4 June ====

* Compilation CMake (Windows, Linux)
* Connections in general, rgrass, qgisprocess
* GRASS GIS addons overview generator for entire GitHub (and more?) based on tag "[https://github.com/topics/grass-gis-addons grass-gis-addons]"
* Group photo 2

==== Monday, 5 June ====

* Connections in general, QGIS, rgrass, qgisprocess
* Parallelizations
* grass.jupyter

==== Tuesday, 6 June ====

* Connections in general, QGIS
* Parallelizations
* grass.jupyter

==== Wednesday, 7 June ====

* Departure

=== Social events ===

==== Friday, 2 June ====

Dinner at 7pm: [https://www.uveverky.com/kontakt/ U veverku pub] ([https://en.mapy.cz/s/jumomotupu map])

==== Saturday, 3 June ====

Dinner at 6pm: [https://unetickypivovar.cz/en Únětický pivovar] ([https://en.mapy.cz/s/mubutetoba map])

* 3:50pm train from Podbaba (15min walk) to Roztoky
* [https://en.mapy.cz/s/dabavojufa walk 1:30min]
* Bus (355) back from Unetice to Dejvicka: 21:57 or 23:18

==== Sunday, 4 June ====

Dinner at 7pm: [https://www.restauracevltava.cz/ Restaurace Vltava] ([https://en.mapy.cz/s/gonezofozo map])

==== Monday, 5 June ====

Dinner at 7pm: [https://www.my-paprika.com/ My Paprika] ([https://en.mapy.cz/s/modekehepu map])

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topics'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
| Czech Republic
| June 1
| June 7
| Python: create_location ([https://github.com/OSGeo/grass/issues/1987 #1987]), Graphical Modeler improvements and single window layout integration
|
|-
|2
| Micha Silver
| Israel
| June 2
| June 6
| Addon to derive soil moisture from Sentinel 2
|
|-
|3
|[https://www.osgeo.org/member/kudrnovsky/ Helmut Kudrnovsky]
| Austria
| June 2 (18:37) by train
| June 4 (18:24) by train
| support CMake transition
|
|-
|4
|[[User:Neteler|Markus Neteler]]
| Germany
| June 2 (17:17)
| June 6 (12:43)
| translations, manual pages, ..., see [[Talk:GRASS_Community_Meeting_Prague_2023#Markus_Neteler|my list in "Discussion" page]]
|
|-
|5
|[[User:pesekon2|Ondřej Pešek]]
| Czech Republic
| June 2 (17:17)
| June 6 (12:43)
| Python 3.12-connected issues, gmodeler
|
|-
|6
| [[User:helena|Helena Mitasova]]
| United States
| June 2
| June 6
|
|
|-
|7
| [[User:wenzeslaus|Vaclav Petras]]
| United States
| June 1
| June 7
| init and other Python API topics, support CMake transition, revise connection with QGIS and other tools, funding
|
|-
|8
| [[User:Annakrat|Anna Petrasova]]
| United States
| June 1
| June 7
| parallelization documentation, grass.jupyter, R and QGIS integration
|
|-
|9
| [[User:Ctwhite|Corey White]]
| United States
| June 2 (10:55)
| June 7
| Connections with other tools, OpenPlains, JSON outputs
|
|-
|10
| [[User:MarisN|Maris Nartiss]]
| Latvia
| June 2 (14:30)
| June 6 (12:00)
| Improvements of imagery modules (push i.svm.*; i.signatures; ?)
|-
|11
| [[User:Aaronsms|Aaron Saw Min Sern]]
| Singapore
| June 1
| June 7
| Support CMake transition, r.mapcalc parallelization
|
|-
|12
| [[User:Ldesousa|Luís de Sousa]]
| The Netherlands
| June 1 (20:00)
| June 5 (20:45)
| Update r.mblend add-on; test CMake transition.
|
|-
|13
| Caitlin Haedrich
| United States
| June 1
| June 7
| grass.jupyter
|
|-
|14
| Linda Kladivová
| Czech Republic
| June 2
| June 6
| Single-Window layout issues and improvements
|
|-
|15
| Carmen Tawalika
| Germany
| June 2 (17:17)
| June 6 (12:43)
| Happy to assist with general topics like documentation + automation, in doubt something related to actinia
|
|-
|16
| Floris Vanderhaeghe
| Belgium
| June 3 (train 19:17)
| June 6 (train 8:25)
| Helping in interfacing GRASS from R (rgrass & qgisprocess packages)
|
|-
|}

If you are arriving or departing on the days of the event, please specify the time, too.

=== Via chat or hangout ===

Join our [https://app.gitter.im/#/room/#grassgis_community:gitter.im Gitter chatroom]

Gitter has a video (and backup will be Zoom).

Participating virtually:

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!'''Topics'''
!'''Times, synchronous or fully asynchronous'''
!'''Notes'''
|-
|1
|[[User:Baharmon|Brendan Harmon]]
| United States
| Update integration with QGIS
| Available 8:00 AM CST (UTC-6) onwards
|
|-
|2
|[[User:veroandreo|Veronica Andreo]]
| Argentina
| Mission and vision, interfaces with QGIS and R, sponsoring, ... [https://grasswiki.osgeo.org/wiki/Talk:GRASS_Community_Meeting_Prague_2023#Vero see discussion tab]
| available from 8:00 AM ART (UTC-3) onward
|
|-
|3
|[[User:Nobeeakon|Daniel T]]
| Mexico
|
| some availability through the days :/
|
|-
|4
|[[User:LBartoletti|Loïc Bartoletti]]
| France
| QGIS Integration, support CMake transition
|
|-
|}

==== Timing of hangout meetings ====

Vero: available from 8:00 AM ART (UTC-3) onward

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install git and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :) Find the latest information on the [https://matrix.to/#/#grassgis_sprint:gitter.im Gitter Channel].

== Photos ==
Day 1
<gallery mode="slideshow">
Image:Devs at work.jpg|Hard at work on the first day
Image:Lively discussion.jpg|Lively discussion
Image:Dinner day 1.jpg|Dinner at a nearby pub
</gallery>

Day 2
<gallery mode="slideshow">
Image:Prague-Community-Meeting-2023.jpg|Group photo
Image:PXL 20230603 085440353.jpg|A full table on day 2
Image:GRASS-smiles.jpg|GRASS GIS development brings smiles
Image:Day2-pizza.jpg|Pizza fuels work!
Image:Day2-collaboration.jpg|Afternoon working and collaborating
Image:Group-photo-hike.jpg|View at Alšova vyhlídka on the way to Únětický pivovar (brewery)
Image:Únětický pivovar.jpg|Beer at Únětický pivovar, a 300-year-old brewery, after a day of hard work
</gallery>

Day 3
<gallery mode="slideshow">
Image:Day3-working.jpg|Working on new features, bug fixes, documentation and more..
Image:Day3-table.jpg|An even fuller table on day 3
Image:Day3-collaboration.jpg|Collaboration and discussion
Image:Beer-pano-day3.jpg|Panoramic photo of a cheers to GRASS's 40th Birthday at Vitala restaurant
</gallery>

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS_GIS at OSGeo Virtual Community Sprint 2020]]!
* ''Is the GRASS Community Meeting just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software.
* ''Is the GRASS Community Meeting for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community meeting?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Report and press release ==

TBD: After the event :-)

We'll esp. craft a report for our sponsors.

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

Talk:GRASS Community Meeting Prague 2023

2023-06-04T09:42:14Z

⚠️Landa: /* Martin Landa */

GRASS Community Meeting Prague 2023

2023-06-04T09:16:08Z

⚠️Landa: /* Social events */

{{toc|right}}
The GRASS GIS team is organizing the ''GRASS GIS Community Meeting with contributors, power users and developers'' from '''June 2 to June 6, 2023''' to celebrate GRASS GIS '''40th birthday''' (by contributing to GRASS GIS of course).

<gallery mode="slideshow">
Image:grass-sprint-prague.jpg|Prague 2013
Image:Grass_sprint2018_bonn_fotowall.jpg|Bonn 2018
</gallery>

== Purpose ==

GRASS GIS Community Meeting is a great occasion for folks to support the development by actively contributing to the source code, documentation (manuals, wiki, tutorials), translations, website or likewise. The '''community''' meeting is also a get-together where supporters, contributors, power users and developers make decisions and tackle larger problems related to the project, discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. We welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R, OGC Services and desiring to '''celebrate with us the 40th GRASS GIS birthday!!'''

In this meeting, we will work on GRASS GIS and integrations with related OSGeo projects. We will revise connection to QGIS to make it easier to maintain, and we will work on migration of the build to CMake to improve Windows builds including PDAL support. Furthermore, we will start moving documentation to Markdown to make it easier to contribute to and we will add images and examples for tools and workflows which still miss them. Finally, we will automate and document maintenance processes to reduce the burden on maintainers and thus improve the project sustainability.

Note that while we have our general plan, we can't accept any earmarked donations, i.e., we can't make any promises for a specific work to be done. We do require participants to work on GRASS GIS or connections to other projects. However, we leave them the freedom to work on what they think is the best contribution to the project at that time given their skills and time available.

For the detailed agenda and individual's plans, see below.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travel and accommodation expenses for GRASS developers who volunteer their time. If you are interested in sponsoring the GRASS Community Meeting, please see our

::: '''[https://opencollective.com/osgeo/projects/grass/contribute/grass-community-meeting-prague-2023-55074 OpenCollective GRASS Community Meeting Prague 2023 Tier]'''

Any surplus at the end of the event will used for future activities of the GRASS GIS project such as the successful [[Student Grants|student mini grant program]].

This GRASS Community Meeting is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. Community meetings are important opportunities for developers to discuss, fix bugs, plan the direction for the project and work on new features. Please see below for the detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community meeting will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Meeting:

[[File:Osgeo logo.png|none|left|alt=Light and dark green logo of OSGeo saying Your Open Source Compass|Open Source Geospatial Foundation]]
* [https://www.osgeo.org/ OSGeo]: 7303 USD (approved budget contribution, [https://www.loomio.com/p/2m75BZkL/motion-to-approve-7303-to-support-grass-gis-community-meeting motion])
* Twitter: [https://twitter.com/OSGeo/ @OSGeo]

[[File:FOSSGIS_eV_logo.png|none|left|400px|alt=Logo of FOSSGIS e.V.|FOSSGIS e.V.]]
* [https://www.fossgis.de/ FOSSGIS e.V.]: 5000 EUR (approved budget contribution, [https://www.fossgis.de/wiki/F%C3%B6rderantr%C3%A4ge/GRASS_GIS_Community_Meeting_2023 request])
* Twitter: [https://twitter.com/FOSSGIS_Verein @FOSSGIS_Verein]

[[File:OSGeo JP logo for web.png|none|left|400px|alt=OSGeo.JP]]
* [https://www.osgeo.jp/ OSGeo Japan]: 550 USD (through Open Collective)

Individuals:
* Hernán De Angelis 20 USD
* MarWe 50 USD
* Nick Brady 50 USD
* José Ramón 50 USD
* Johannes Brauner 30 USD
* Peter Löwe 30 USD
* Evan Kay 10 USD
* Joaquin Perez Valera 5 USD
* Anonymous sponsors 2750 USD

In-kind contributions:

* Faculty of Civil Engineering Czech Technical University in Prague (FCE CTU) - space and personnel time (planning, preparation)
* North Carolina State University - personnel time (planning, preparation)
* mundialis GmbH & Co. KG - personnel time (planning, preparation)
* CONICET - personnel time (planning, preparation)

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the meeting whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Thákurova 7/2077, Prague 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from, reimbursements depending on the financial contributions provided by the community
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/cs/financni-trhy/devizovy-trh/kurzy-devizoveho-trhu/kurzy-devizoveho-trhu/ current rates]).

Please let us know your time of arrival and departure, so we can book accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

During the meeting we will work on GRASS GIS on these tasks (please add more!):

* We will update and revise the [https://github.com/qgis/QGIS/tree/master/python/plugins/grassprovider GRASS GIS Integration with QGIS] to simplify maintenance.
* Furthermore, we will migrate the compilation technology to CMake to significantly improve the Windows builds including PDAL support and become binary compatible with OSGeo4W.
* The extensive GRASS documentation will be converted from HTML to Markdown to facilitate future collaboration.
* Pictures, examples and workflows will be added to the documentation where they are still missing.
* Software maintenance processes are automated and documented to reduce the burden on maintainers and thus improve the sustainability of the project.

This means that there are tasks from both the programming and documentation areas to appeal to a wide range of interested parties.

Further details about the action items you '''find [[Talk:GRASS Community Meeting Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

(agenda is under development, but also flexible)

==== Thursday, 1 June ====

* Arrival

==== Friday, 2 June ====

* 9:00 meeting starts in the room B-868
* Lunch: 12:45 NTK
* Review the plan for the next days
* API for use in Python and in other projects (e.g., QGIS)
* Parallelizations

==== Saturday, 3 June ====

* Reducing cost of distribution on Windows
* Convert GRASS GIS documentation from HTML to Markdown and implement new documentation system (mkdocs?)
* Group photo 1
* Outdoor social evening

==== Sunday, 4 June ====

* Compilation CMake (Windows, Linux)
* Connections in general, rgrass, qgisprocess
* GRASS GIS addons overview generator for entire GitHub (and more?) based on tag "[https://github.com/topics/grass-gis-addons grass-gis-addons]"
* Group photo 2

==== Monday, 5 June ====

* Connections in general, QGIS, rgrass, qgisprocess
* Parallelizations
* grass.jupyter

==== Tuesday, 6 June ====

* Connections in general, QGIS
* Parallelizations
* grass.jupyter

==== Wednesday, 7 June ====

* Departure

=== Social events ===

==== Friday, 2 June ====

Dinner at 7pm: [https://www.uveverky.com/kontakt/ U veverku pub] ([https://en.mapy.cz/s/jumomotupu map])

==== Saturday, 3 June ====

Dinner at 6pm: [https://unetickypivovar.cz/en Únětický pivovar] ([https://en.mapy.cz/s/mubutetoba map])

* 3:50pm train from Podbaba (15min walk) to Roztoky
* [https://en.mapy.cz/s/dabavojufa walk 1:30min]
* Bus (355) back from Unetice to Dejvicka: 21:57 or 23:18

==== Sunday, 4 June ====

Dinner at 7pm: [https://www.restauracevltava.cz/ Restaurace Vltava] ([https://en.mapy.cz/s/gonezofozo map])

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topics'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
| Czech Republic
| June 1
| June 7
| Python: create_location ([https://github.com/OSGeo/grass/issues/1987 #1987]), Graphical Modeler improvements and single window layout integration
|
|-
|2
| Micha Silver
| Israel
| June 2
| June 6
| Addon to derive soil moisture from Sentinel 2
|
|-
|3
|[https://www.osgeo.org/member/kudrnovsky/ Helmut Kudrnovsky]
| Austria
| June 2 (18:37) by train
| June 4 (18:24) by train
| support CMake transition
|
|-
|4
|[[User:Neteler|Markus Neteler]]
| Germany
| June 2 (17:17)
| June 6 (12:43)
| translations, manual pages, ..., see [[Talk:GRASS_Community_Meeting_Prague_2023#Markus_Neteler|my list in "Discussion" page]]
|
|-
|5
|[[User:pesekon2|Ondřej Pešek]]
| Czech Republic
| June 2 (17:17)
| June 6 (12:43)
| Python 3.12-connected issues, gmodeler
|
|-
|6
| [[User:helena|Helena Mitasova]]
| United States
| June 2
| June 6
|
|
|-
|7
| [[User:wenzeslaus|Vaclav Petras]]
| United States
| June 1
| June 7
| init and other Python API topics, support CMake transition, revise connection with QGIS and other tools, funding
|
|-
|8
| [[User:Annakrat|Anna Petrasova]]
| United States
| June 1
| June 7
| parallelization documentation, grass.jupyter, R and QGIS integration
|
|-
|9
| [[User:Ctwhite|Corey White]]
| United States
| June 2 (10:55)
| June 7
| Connections with other tools, OpenPlains, JSON outputs
|
|-
|10
| [[User:MarisN|Maris Nartiss]]
| Latvia
| June 2 (14:30)
| June 6 (12:00)
| Improvements of imagery modules (push i.svm.*; i.signatures; ?)
|-
|11
| [[User:Aaronsms|Aaron Saw Min Sern]]
| Singapore
| June 1
| June 7
| Support CMake transition, r.mapcalc parallelization
|
|-
|12
| [[User:Ldesousa|Luís de Sousa]]
| The Netherlands
| June 1 (20:00)
| June 5 (20:45)
| Update r.mblend add-on; test CMake transition.
|
|-
|13
| Caitlin Haedrich
| United States
| June 1
| June 7
| grass.jupyter
|
|-
|14
| Linda Kladivová
| Czech Republic
| June 2
| June 6
| Single-Window layout issues and improvements
|
|-
|15
| Carmen Tawalika
| Germany
| June 2 (17:17)
| June 6 (12:43)
| Happy to assist with general topics like documentation + automation, in doubt something related to actinia
|
|-
|16
| Floris Vanderhaeghe
| Belgium
| June 3 (train 19:17)
| June 6 (train 8:25)
| Helping in interfacing GRASS from R (rgrass & qgisprocess packages)
|
|-
|}

If you are arriving or departing on the days of the event, please specify the time, too.

=== Via chat or hangout ===

Join our [https://app.gitter.im/#/room/#grassgis_community:gitter.im Gitter chatroom]

Gitter has a video (and backup will be Zoom).

Participating virtually:

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!'''Topics'''
!'''Times, synchronous or fully asynchronous'''
!'''Notes'''
|-
|1
|[[User:Baharmon|Brendan Harmon]]
| United States
| Update integration with QGIS
| Available 8:00 AM CST (UTC-6) onwards
|
|-
|2
|[[User:veroandreo|Veronica Andreo]]
| Argentina
| Mission and vision, interfaces with QGIS and R, sponsoring, ... [https://grasswiki.osgeo.org/wiki/Talk:GRASS_Community_Meeting_Prague_2023#Vero see discussion tab]
| available from 8:00 AM ART (UTC-3) onward
|
|-
|3
|[[User:Nobeeakon|Daniel T]]
| Mexico
|
| some availability through the days :/
|
|-
|4
|[[User:LBartoletti|Loïc Bartoletti]]
| France
| QGIS Integration, support CMake transition
|
|-
|}

==== Timing of hangout meetings ====

Vero: available from 8:00 AM ART (UTC-3) onward

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install git and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :) Find the latest information on the [https://matrix.to/#/#grassgis_sprint:gitter.im Gitter Channel].

== Photos ==
Day 1
<gallery mode="slideshow">
Image:Devs at work.jpg|Hard at work on the first day
Image:Lively discussion.jpg|Lively discussion
Image:Dinner day 1.jpg|Dinner at a nearby pub
</gallery>

Day 2
<gallery mode="slideshow">
Image:Prague-Community-Meeting-2023.jpg|Group photo
Image:PXL 20230603 085440353.jpg|A full table on day 2
Image:GRASS-smiles.jpg|GRASS GIS development brings smiles
Image:Day2-pizza.jpg|Pizza fuels work!
Image:Day2-collaboration.jpg|Afternoon working and collaborating
Image:Group-photo-hike.jpg|View at Alšova vyhlídka on the way to Únětický pivovar (brewery)
Image:Únětický pivovar.jpg|Beer at Únětický pivovar, a 300-year-old brewery, after a day of hard work
</gallery>

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS_GIS at OSGeo Virtual Community Sprint 2020]]!
* ''Is the GRASS Community Meeting just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software.
* ''Is the GRASS Community Meeting for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community meeting?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Report and press release ==

TBD: After the event :-)

We'll esp. craft a report for our sponsors.

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

Talk:GRASS Community Meeting Prague 2023

2023-06-03T12:23:34Z

⚠️Landa: /* Martin Landa */

GRASS Community Meeting Prague 2023

2023-06-03T12:00:11Z

⚠️Landa: /* Saturday, 3 June */

{{toc|right}}
The GRASS GIS team is organizing the ''GRASS GIS Community Meeting with contributors, power users and developers'' from '''June 2 to June 6, 2023''' to celebrate GRASS GIS '''40th birthday''' (by contributing to GRASS GIS of course).

<gallery mode="slideshow">
Image:grass-sprint-prague.jpg|Prague 2013
Image:Grass_sprint2018_bonn_fotowall.jpg|Bonn 2018
</gallery>

== Purpose ==

GRASS GIS Community Meeting is a great occasion for folks to support the development by actively contributing to the source code, documentation (manuals, wiki, tutorials), translations, website or likewise. The '''community''' meeting is also a get-together where supporters, contributors, power users and developers make decisions and tackle larger problems related to the project, discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. We welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R, OGC Services and desiring to '''celebrate with us the 40th GRASS GIS birthday!!'''

In this meeting, we will work on GRASS GIS and integrations with related OSGeo projects. We will revise connection to QGIS to make it easier to maintain, and we will work on migration of the build to CMake to improve Windows builds including PDAL support. Furthermore, we will start moving documentation to Markdown to make it easier to contribute to and we will add images and examples for tools and workflows which still miss them. Finally, we will automate and document maintenance processes to reduce the burden on maintainers and thus improve the project sustainability.

Note that while we have our general plan, we can't accept any earmarked donations, i.e., we can't make any promises for a specific work to be done. We do require participants to work on GRASS GIS or connections to other projects. However, we leave them the freedom to work on what they think is the best contribution to the project at that time given their skills and time available.

For the detailed agenda and individual's plans, see below.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travel and accommodation expenses for GRASS developers who volunteer their time. If you are interested in sponsoring the GRASS Community Meeting, please see our

::: '''[https://opencollective.com/osgeo/projects/grass/contribute/grass-community-meeting-prague-2023-55074 OpenCollective GRASS Community Meeting Prague 2023 Tier]'''

Any surplus at the end of the event will used for future activities of the GRASS GIS project such as the successful [[Student Grants|student mini grant program]].

This GRASS Community Meeting is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. Community meetings are important opportunities for developers to discuss, fix bugs, plan the direction for the project and work on new features. Please see below for the detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community meeting will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Meeting:

[[File:Osgeo logo.png|none|left|alt=Light and dark green logo of OSGeo saying Your Open Source Compass|Open Source Geospatial Foundation]]
* [https://www.osgeo.org/ OSGeo]: 7303 USD (approved budget contribution, [https://www.loomio.com/p/2m75BZkL/motion-to-approve-7303-to-support-grass-gis-community-meeting motion])
* Twitter: [https://twitter.com/OSGeo/ @OSGeo]

[[File:FOSSGIS_eV_logo.png|none|left|400px|alt=Logo of FOSSGIS e.V.|FOSSGIS e.V.]]
* [https://www.fossgis.de/ FOSSGIS e.V.]: 5000 EUR (approved budget contribution, [https://www.fossgis.de/wiki/F%C3%B6rderantr%C3%A4ge/GRASS_GIS_Community_Meeting_2023 request])
* Twitter: [https://twitter.com/FOSSGIS_Verein @FOSSGIS_Verein]

[[File:OSGeo JP logo for web.png|none|left|400px|alt=OSGeo.JP]]
* [https://www.osgeo.jp/ OSGeo Japan]: 550 USD (through Open Collective)

Individuals:
* Hernán De Angelis 20 USD
* MarWe 50 USD
* Nick Brady 50 USD
* José Ramón 50 USD
* Johannes Brauner 30 USD
* Peter Löwe 30 USD
* Evan Kay 10 USD
* Joaquin Perez Valera 5 USD
* Anonymous sponsors 2750 USD

In-kind contributions:

* Faculty of Civil Engineering Czech Technical University in Prague (FCE CTU) - space and personnel time (planning, preparation)
* North Carolina State University - personnel time (planning, preparation)
* mundialis GmbH & Co. KG - personnel time (planning, preparation)
* CONICET - personnel time (planning, preparation)

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the meeting whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Thákurova 7/2077, Prague 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from, reimbursements depending on the financial contributions provided by the community
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/cs/financni-trhy/devizovy-trh/kurzy-devizoveho-trhu/kurzy-devizoveho-trhu/ current rates]).

Please let us know your time of arrival and departure, so we can book accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

During the meeting we will work on GRASS GIS on these tasks (please add more!):

* We will update and revise the [https://github.com/qgis/QGIS/tree/master/python/plugins/grassprovider GRASS GIS Integration with QGIS] to simplify maintenance.
* Furthermore, we will migrate the compilation technology to CMake to significantly improve the Windows builds including PDAL support and become binary compatible with OSGeo4W.
* The extensive GRASS documentation will be converted from HTML to Markdown to facilitate future collaboration.
* Pictures, examples and workflows will be added to the documentation where they are still missing.
* Software maintenance processes are automated and documented to reduce the burden on maintainers and thus improve the sustainability of the project.

This means that there are tasks from both the programming and documentation areas to appeal to a wide range of interested parties.

Further details about the action items you '''find [[Talk:GRASS Community Meeting Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

(agenda is under development, but also flexible)

==== Thursday, 1 June ====

* Arrival

==== Friday, 2 June ====

* 9:00 meeting starts in the room B-868
* Lunch: 12:45 NTK
* Review the plan for the next days
* API for use in Python and in other projects (e.g., QGIS)
* Parallelizations

==== Saturday, 3 June ====

* Reducing cost of distribution on Windows
* Convert GRASS GIS documentation from HTML to Markdown and implement new documentation system (mkdocs?)
* Group photo 1
* Outdoor social evening

==== Sunday, 4 June ====

* Compilation CMake (Windows, Linux)
* Connections in general, rgrass, qgisprocess
* GRASS GIS addons overview generator for entire GitHub (and more?) based on tag "[https://github.com/topics/grass-gis-addons grass-gis-addons]"
* Group photo 2

==== Monday, 5 June ====

* Connections in general, QGIS, rgrass, qgisprocess
* Parallelizations
* grass.jupyter

==== Tuesday, 6 June ====

* Connections in general, QGIS
* Parallelizations
* grass.jupyter

==== Wednesday, 7 June ====

* Departure

=== Social events ===

==== Friday, 2 June ====

Dinner at 7pm: [https://www.uveverky.com/kontakt/ U veverku pub] ([https://en.mapy.cz/s/jumomotupu map])

==== Saturday, 3 June ====

Dinner at 6pm: [https://unetickypivovar.cz/en Únětický pivovar] ([https://en.mapy.cz/s/mubutetoba map])

* 3:50pm train from Podbaba (15min walk) to Roztoky
* [https://en.mapy.cz/s/dabavojufa walk 1:30min]
* Bus (355) back from Unetice to Dejvicka: 21:57 or 23:18

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topics'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
| Czech Republic
| June 1
| June 7
| Python: create_location ([https://github.com/OSGeo/grass/issues/1987 #1987]), Graphical Modeler improvements and single window layout integration
|
|-
|2
| Micha Silver
| Israel
| June 2
| June 6
| Addon to derive soil moisture from Sentinel 2
|
|-
|3
|[https://www.osgeo.org/member/kudrnovsky/ Helmut Kudrnovsky]
| Austria
| June 2 (18:37) by train
| June 4 (18:24) by train
| support CMake transition
|
|-
|4
|[[User:Neteler|Markus Neteler]]
| Germany
| June 2 (17:17)
| June 6 (12:43)
| translations, manual pages, ..., see [[Talk:GRASS_Community_Meeting_Prague_2023#Markus_Neteler|my list in "Discussion" page]]
|
|-
|5
|[[User:pesekon2|Ondřej Pešek]]
| Czech Republic
| June 2 (17:17)
| June 6 (12:43)
| Python 3.12-connected issues, gmodeler
|
|-
|6
| [[User:helena|Helena Mitasova]]
| United States
| June 2
| June 6
|
|
|-
|7
| [[User:wenzeslaus|Vaclav Petras]]
| United States
| June 1
| June 7
| init and other Python API topics, support CMake transition, revise connection with QGIS and other tools, funding
|
|-
|8
| [[User:Annakrat|Anna Petrasova]]
| United States
| June 1
| June 7
| parallelization documentation, grass.jupyter, R and QGIS integration
|
|-
|9
| [[User:Ctwhite|Corey White]]
| United States
| June 2 (10:55)
| June 7
| Connections with other tools, OpenPlains, JSON outputs
|
|-
|10
| [[User:MarisN|Maris Nartiss]]
| Latvia
| June 2 (14:30)
| June 6 (12:00)
| Improvements of imagery modules (push i.svm.*; i.signatures; ?)
|-
|11
| [[User:Aaronsms|Aaron Saw Min Sern]]
| Singapore
| June 1
| June 7
| Support CMake transition, r.mapcalc parallelization
|
|-
|12
| [[User:Ldesousa|Luís de Sousa]]
| The Netherlands
| June 1 (20:00)
| June 5 (20:45)
| Update r.mblend add-on; test CMake transition.
|
|-
|13
| Caitlin Haedrich
| United States
| June 1
| June 7
| grass.jupyter
|
|-
|14
| Linda Kladivová
| Czech Republic
| June 2
| June 6
| Single-Window layout issues and improvements
|
|-
|15
| Carmen Tawalika
| Germany
| June 2 (17:17)
| June 6 (12:43)
| Happy to assist with general topics like documentation + automation, in doubt something related to actinia
|
|-
|16
| Floris Vanderhaeghe
| Belgium
| June 3 (train 19:17)
| June 6 (train 8:25)
| Helping in interfacing GRASS from R (rgrass & qgisprocess packages)
|
|-
|}

If you are arriving or departing on the days of the event, please specify the time, too.

=== Via chat or hangout ===

Join our [https://app.gitter.im/#/room/#grassgis_community:gitter.im Gitter chatroom]

Gitter has a video (and backup will be Zoom).

Participating virtually:

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!'''Topics'''
!'''Times, synchronous or fully asynchronous'''
!'''Notes'''
|-
|1
|[[User:Baharmon|Brendan Harmon]]
| United States
| Update integration with QGIS
| Available 8:00 AM CST (UTC-6) onwards
|
|-
|2
|[[User:veroandreo|Veronica Andreo]]
| Argentina
| Mission and vision, interfaces with QGIS and R, sponsoring, ... [https://grasswiki.osgeo.org/wiki/Talk:GRASS_Community_Meeting_Prague_2023#Vero see discussion tab]
| available from 8:00 AM ART (UTC-3) onward
|
|-
|3
|[[User:Nobeeakon|Daniel T]]
| Mexico
|
| some availability through the days :/
|
|-
|4
|[[User:LBartoletti|Loïc Bartoletti]]
| France
| QGIS Integration, support CMake transition
|
|-
|}

==== Timing of hangout meetings ====

Vero: available from 8:00 AM ART (UTC-3) onward

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install git and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :) Find the latest information on the [https://matrix.to/#/#grassgis_sprint:gitter.im Gitter Channel].

== Photos ==
Day 1
<gallery mode="slideshow">
Image:Devs at work.jpg|Hard at work on the first day
Image:Lively discussion.jpg|Lively discussion
Image:Dinner day 1.jpg|Dinner at a nearby pub
</gallery>

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS_GIS at OSGeo Virtual Community Sprint 2020]]!
* ''Is the GRASS Community Meeting just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software.
* ''Is the GRASS Community Meeting for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community meeting?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Report and press release ==

TBD: After the event :-)

We'll esp. craft a report for our sponsors.

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

Talk:GRASS Community Meeting Prague 2023

2023-06-03T10:11:01Z

⚠️Landa: /* Martin Landa */

Talk:GRASS Community Meeting Prague 2023

2023-06-03T08:49:45Z

⚠️Landa: /* Martin Landa */

Talk:GRASS Community Meeting Prague 2023

2023-06-03T08:49:28Z

⚠️Landa: /* Martin Landa */

Talk:GRASS Community Meeting Prague 2023

2023-06-03T08:49:10Z

⚠️Landa: /* Martin Landa */

Talk:GRASS Community Meeting Prague 2023

2023-06-03T08:47:00Z

⚠️Landa: /* You */

GRASS Community Meeting Prague 2023

2023-06-03T08:13:20Z

⚠️Landa: /* Saturday, 3 June */

{{toc|right}}
The GRASS GIS team is organizing the ''GRASS GIS Community Meeting with contributors, power users and developers'' from '''June 2 to June 6, 2023''' to celebrate GRASS GIS '''40th birthday''' (by contributing to GRASS GIS of course).

<gallery mode="slideshow">
Image:grass-sprint-prague.jpg|Prague 2013
Image:Grass_sprint2018_bonn_fotowall.jpg|Bonn 2018
</gallery>

== Purpose ==

GRASS GIS Community Meeting is a great occasion for folks to support the development by actively contributing to the source code, documentation (manuals, wiki, tutorials), translations, website or likewise. The '''community''' meeting is also a get-together where supporters, contributors, power users and developers make decisions and tackle larger problems related to the project, discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. We welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R, OGC Services and desiring to '''celebrate with us the 40th GRASS GIS birthday!!'''

In this meeting, we will work on GRASS GIS and integrations with related OSGeo projects. We will revise connection to QGIS to make it easier to maintain, and we will work on migration of the build to CMake to improve Windows builds including PDAL support. Furthermore, we will start moving documentation to Markdown to make it easier to contribute to and we will add images and examples for tools and workflows which still miss them. Finally, we will automate and document maintenance processes to reduce the burden on maintainers and thus improve the project sustainability.

Note that while we have our general plan, we can't accept any earmarked donations, i.e., we can't make any promises for a specific work to be done. We do require participants to work on GRASS GIS or connections to other projects. However, we leave them the freedom to work on what they think is the best contribution to the project at that time given their skills and time available.

For the detailed agenda and individual's plans, see below.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travel and accommodation expenses for GRASS developers who volunteer their time. If you are interested in sponsoring the GRASS Community Meeting, please see our

::: '''[https://opencollective.com/osgeo/projects/grass/contribute/grass-community-meeting-prague-2023-55074 OpenCollective GRASS Community Meeting Prague 2023 Tier]'''

Any surplus at the end of the event will used for future activities of the GRASS GIS project such as the successful [[Student Grants|student mini grant program]].

This GRASS Community Meeting is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. Community meetings are important opportunities for developers to discuss, fix bugs, plan the direction for the project and work on new features. Please see below for the detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community meeting will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Meeting:

[[File:Osgeo logo.png|none|left|alt=Light and dark green logo of OSGeo saying Your Open Source Compass|Open Source Geospatial Foundation]]
* [https://www.osgeo.org/ OSGeo]: 7303 USD (approved budget contribution, [https://www.loomio.com/p/2m75BZkL/motion-to-approve-7303-to-support-grass-gis-community-meeting motion])

[[File:FOSSGIS_eV_logo.png|none|left|400px|alt=Logo of FOSSGIS e.V.|FOSSGIS e.V.]]
* [https://www.fossgis.de/ FOSSGIS e.V.]: 5000 EUR (approved budget contribution, [https://www.fossgis.de/wiki/F%C3%B6rderantr%C3%A4ge/GRASS_GIS_Community_Meeting_2023 request])

[[File:OSGeo JP logo for web.png|none|left|400px|alt=OSGeo.JP]]
* [https://www.osgeo.jp/ OSGeo Japan]: 550 USD (through Open Collective)

Individuals:
* MarWe 50 USD
* Nick Brady 50 USD
* José Ramón 50 USD
* Johannes Brauner 30 USD
* Peter Löwe 30 USD
* Evan Kay 10 USD
* Joaquin Perez Valera 5 USD
* Anonymous sponsors 2750 USD

In-kind contributions:

* Faculty of Civil Engineering Czech Technical University in Prague (FCE CTU) - space and personnel time (planning, preparation)
* North Carolina State University - personnel time (planning, preparation)
* mundialis GmbH & Co. KG - personnel time (planning, preparation)
* CONICET - personnel time (planning, preparation)

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the meeting whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Thákurova 7/2077, Prague 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from, reimbursements depending on the financial contributions provided by the community
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/cs/financni-trhy/devizovy-trh/kurzy-devizoveho-trhu/kurzy-devizoveho-trhu/ current rates]).

Please let us know your time of arrival and departure, so we can book accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

During the meeting we will work on GRASS GIS on these tasks (please add more!):

* We will update and revise the [https://github.com/qgis/QGIS/tree/master/python/plugins/grassprovider GRASS GIS Integration with QGIS] to simplify maintenance.
* Furthermore, we will migrate the compilation technology to CMake to significantly improve the Windows builds including PDAL support and become binary compatible with OSGeo4W.
* The extensive GRASS documentation will be converted from HTML to Markdown to facilitate future collaboration.
* Pictures, examples and workflows will be added to the documentation where they are still missing.
* Software maintenance processes are automated and documented to reduce the burden on maintainers and thus improve the sustainability of the project.

This means that there are tasks from both the programming and documentation areas to appeal to a wide range of interested parties.

Further details about the action items you '''find [[Talk:GRASS Community Meeting Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

(agenda is under development, but also flexible)

==== Thursday, 1 June ====

* Arrival

==== Friday, 2 June ====

* 9:00 meeting starts in the room B-868
* Lunch: 12:45 NTK
* Review the plan for the next days
* API for use in Python and in other projects (e.g., QGIS)
* Parallelizations

==== Saturday, 3 June ====

* Reducing cost of distribution on Windows
* Convert GRASS GIS documentation from HTML to Markdown and implement new documentation system (mkdocs?)
* Group photo 1
* Outdoor social evening

==== Sunday, 4 June ====

* Compilation CMake (Windows, Linux)
* Connections in general, rgrass, qgisprocess
* GRASS GIS addons overview generator for entire GitHub (and more?) based on tag "[https://github.com/topics/grass-gis-addons grass-gis-addons]"
* Group photo 2

==== Monday, 5 June ====

* Connections in general, QGIS, rgrass, qgisprocess
* Parallelizations
* grass.jupyter

==== Tuesday, 6 June ====

* Connections in general, QGIS
* Parallelizations
* grass.jupyter

==== Wednesday, 7 June ====

* Departure

=== Social events ===

==== Friday, 2 June ====

Dinner at 7pm: [https://www.uveverky.com/kontakt/ U veverku pub] ([https://en.mapy.cz/s/jumomotupu map])

==== Saturday, 3 June ====

Dinner at 6pm: [https://unetickypivovar.cz/en Únětický pivovar] ([https://en.mapy.cz/s/mubutetoba map])

* 3:20 or 3:41pm train from Podbaba (15min walk) to Roztoky
* [https://en.mapy.cz/s/dabavojufa walk 1:30min]
* Bus (355) back from Unetice to Dejvicka: 21:57 or 23:18

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topics'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
| Czech Republic
| June 1
| June 7
| Python: create_location ([https://github.com/OSGeo/grass/issues/1987 #1987]), Graphical Modeler improvements and single window layout integration
|
|-
|2
| Micha Silver
| Israel
| June 2
| June 6
| Addon to derive soil moisture from Sentinel 2
|
|-
|3
|[https://www.osgeo.org/member/kudrnovsky/ Helmut Kudrnovsky]
| Austria
| June 2 (18:37) by train
| June 4 (18:24) by train
| support CMake transition
|
|-
|4
|[[User:Neteler|Markus Neteler]]
| Germany
| June 2 (17:17)
| June 6 (12:43)
| translations, manual pages, ..., see [[Talk:GRASS_Community_Meeting_Prague_2023#Markus_Neteler|my list in "Discussion" page]]
|
|-
|5
|[[User:pesekon2|Ondřej Pešek]]
| Czech Republic
| June 2 (17:17)
| June 6 (12:43)
| Python 3.12-connected issues, gmodeler
|
|-
|6
| [[User:helena|Helena Mitasova]]
| United States
| June 2
| June 6
|
|
|-
|7
| [[User:wenzeslaus|Vaclav Petras]]
| United States
| June 1
| June 7
| init and other Python API topics, support CMake transition, revise connection with QGIS and other tools, funding
|
|-
|8
| [[User:Annakrat|Anna Petrasova]]
| United States
| June 1
| June 7
| parallelization documentation, grass.jupyter, R and QGIS integration
|
|-
|9
| [[User:Ctwhite|Corey White]]
| United States
| June 2 (10:55)
| June 7
| Connections with other tools, OpenPlains, JSON outputs
|
|-
|10
| [[User:MarisN|Maris Nartiss]]
| Latvia
| June 2 (14:30)
| June 6 (12:00)
| Improvements of imagery modules (push i.svm.*; i.signatures; ?)
|-
|11
| [[User:Aaronsms|Aaron Saw Min Sern]]
| Singapore
| June 1
| June 7
| Support CMake transition, r.mapcalc parallelization
|
|-
|12
| [[User:Ldesousa|Luís de Sousa]]
| The Netherlands
| June 1 (20:00)
| June 5 (20:45)
| Update r.mblend add-on; test CMake transition.
|
|-
|13
| Caitlin Haedrich
| United States
| June 1
| June 7
| grass.jupyter
|
|-
|14
| Linda Kladivová
| Czech Republic
| June 2
| June 6
| Single-Window layout issues and improvements
|
|-
|15
| Carmen Tawalika
| Germany
| June 2 (17:17)
| June 6 (12:43)
| Happy to assist with general topics like documentation + automation, in doubt something related to actinia
|
|-
|16
| Floris Vanderhaeghe
| Belgium
| June 3 (train 19:17)
| June 6 (train 8:25)
| Helping in interfacing GRASS from R (rgrass & qgisprocess packages)
|
|-
|}

If you are arriving or departing on the days of the event, please specify the time, too.

=== Via chat or hangout ===

Join our [https://app.gitter.im/#/room/#grassgis_community:gitter.im Gitter chatroom]

Gitter has a video (and backup will be Zoom).

Participating virtually:

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!'''Topics'''
!'''Times, synchronous or fully asynchronous'''
!'''Notes'''
|-
|1
|[[User:Baharmon|Brendan Harmon]]
| United States
| Update integration with QGIS
| Available 8:00 AM CST (UTC-6) onwards
|
|-
|2
|[[User:veroandreo|Veronica Andreo]]
| Argentina
| Mission and vision, interfaces with QGIS and R, sponsoring, ... [https://grasswiki.osgeo.org/wiki/Talk:GRASS_Community_Meeting_Prague_2023#Vero see discussion tab]
| available from 8:00 AM ART (UTC-3) onward
|
|-
|3
|[[User:Nobeeakon|Daniel T]]
| Mexico
|
| some availability through the days :/
|
|-
|4
|[[User:LBartoletti|Loïc Bartoletti]]
| France
| QGIS Integration, support CMake transition
|
|-
|}

==== Timing of hangout meetings ====

Vero: available from 8:00 AM ART (UTC-3) onward

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install git and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :) Find the latest information on the [https://matrix.to/#/#grassgis_sprint:gitter.im Gitter Channel].

== Photos ==
Day 1
<gallery mode="slideshow">
Image:Devs at work.jpg|Hard at work on the first day
Image:Lively discussion.jpg|Lively discussion
Image:Dinner day 1.jpg|Dinner at a nearby pub
</gallery>

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS_GIS at OSGeo Virtual Community Sprint 2020]]!
* ''Is the GRASS Community Meeting just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software.
* ''Is the GRASS Community Meeting for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community meeting?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Report and press release ==

TBD: After the event :-)

We'll esp. craft a report for our sponsors.

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

GRASS Community Meeting Prague 2023

2023-06-03T08:10:40Z

⚠️Landa: /* Saturday, 3 June */

{{toc|right}}
The GRASS GIS team is organizing the ''GRASS GIS Community Meeting with contributors, power users and developers'' from '''June 2 to June 6, 2023''' to celebrate GRASS GIS '''40th birthday''' (by contributing to GRASS GIS of course).

<gallery mode="slideshow">
Image:grass-sprint-prague.jpg|Prague 2013
Image:Grass_sprint2018_bonn_fotowall.jpg|Bonn 2018
</gallery>

== Purpose ==

GRASS GIS Community Meeting is a great occasion for folks to support the development by actively contributing to the source code, documentation (manuals, wiki, tutorials), translations, website or likewise. The '''community''' meeting is also a get-together where supporters, contributors, power users and developers make decisions and tackle larger problems related to the project, discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. We welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R, OGC Services and desiring to '''celebrate with us the 40th GRASS GIS birthday!!'''

In this meeting, we will work on GRASS GIS and integrations with related OSGeo projects. We will revise connection to QGIS to make it easier to maintain, and we will work on migration of the build to CMake to improve Windows builds including PDAL support. Furthermore, we will start moving documentation to Markdown to make it easier to contribute to and we will add images and examples for tools and workflows which still miss them. Finally, we will automate and document maintenance processes to reduce the burden on maintainers and thus improve the project sustainability.

Note that while we have our general plan, we can't accept any earmarked donations, i.e., we can't make any promises for a specific work to be done. We do require participants to work on GRASS GIS or connections to other projects. However, we leave them the freedom to work on what they think is the best contribution to the project at that time given their skills and time available.

For the detailed agenda and individual's plans, see below.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travel and accommodation expenses for GRASS developers who volunteer their time. If you are interested in sponsoring the GRASS Community Meeting, please see our

::: '''[https://opencollective.com/osgeo/projects/grass/contribute/grass-community-meeting-prague-2023-55074 OpenCollective GRASS Community Meeting Prague 2023 Tier]'''

Any surplus at the end of the event will used for future activities of the GRASS GIS project such as the successful [[Student Grants|student mini grant program]].

This GRASS Community Meeting is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. Community meetings are important opportunities for developers to discuss, fix bugs, plan the direction for the project and work on new features. Please see below for the detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community meeting will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Meeting:

[[File:Osgeo logo.png|none|left|alt=Light and dark green logo of OSGeo saying Your Open Source Compass|Open Source Geospatial Foundation]]
* [https://www.osgeo.org/ OSGeo]: 7303 USD (approved budget contribution, [https://www.loomio.com/p/2m75BZkL/motion-to-approve-7303-to-support-grass-gis-community-meeting motion])

[[File:FOSSGIS_eV_logo.png|none|left|400px|alt=Logo of FOSSGIS e.V.|FOSSGIS e.V.]]
* [https://www.fossgis.de/ FOSSGIS e.V.]: 5000 EUR (approved budget contribution, [https://www.fossgis.de/wiki/F%C3%B6rderantr%C3%A4ge/GRASS_GIS_Community_Meeting_2023 request])

[[File:OSGeo JP logo for web.png|none|left|400px|alt=OSGeo.JP]]
* [https://www.osgeo.jp/ OSGeo Japan]: 550 USD (through Open Collective)

Individuals:
* MarWe 50 USD
* Nick Brady 50 USD
* José Ramón 50 USD
* Johannes Brauner 30 USD
* Peter Löwe 30 USD
* Evan Kay 10 USD
* Joaquin Perez Valera 5 USD
* Anonymous sponsors 2750 USD

In-kind contributions:

* Faculty of Civil Engineering Czech Technical University in Prague (FCE CTU) - space and personnel time (planning, preparation)
* North Carolina State University - personnel time (planning, preparation)
* mundialis GmbH & Co. KG - personnel time (planning, preparation)
* CONICET - personnel time (planning, preparation)

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the meeting whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Thákurova 7/2077, Prague 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from, reimbursements depending on the financial contributions provided by the community
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/cs/financni-trhy/devizovy-trh/kurzy-devizoveho-trhu/kurzy-devizoveho-trhu/ current rates]).

Please let us know your time of arrival and departure, so we can book accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

During the meeting we will work on GRASS GIS on these tasks (please add more!):

* We will update and revise the [https://github.com/qgis/QGIS/tree/master/python/plugins/grassprovider GRASS GIS Integration with QGIS] to simplify maintenance.
* Furthermore, we will migrate the compilation technology to CMake to significantly improve the Windows builds including PDAL support and become binary compatible with OSGeo4W.
* The extensive GRASS documentation will be converted from HTML to Markdown to facilitate future collaboration.
* Pictures, examples and workflows will be added to the documentation where they are still missing.
* Software maintenance processes are automated and documented to reduce the burden on maintainers and thus improve the sustainability of the project.

This means that there are tasks from both the programming and documentation areas to appeal to a wide range of interested parties.

Further details about the action items you '''find [[Talk:GRASS Community Meeting Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

(agenda is under development, but also flexible)

==== Thursday, 1 June ====

* Arrival

==== Friday, 2 June ====

* 9:00 meeting starts in the room B-868
* Lunch: 12:45 NTK
* Review the plan for the next days
* API for use in Python and in other projects (e.g., QGIS)
* Parallelizations

==== Saturday, 3 June ====

* Reducing cost of distribution on Windows
* Convert GRASS GIS documentation from HTML to Markdown and implement new documentation system (mkdocs?)
* Group photo 1
* Outdoor social evening

==== Sunday, 4 June ====

* Compilation CMake (Windows, Linux)
* Connections in general, rgrass, qgisprocess
* GRASS GIS addons overview generator for entire GitHub (and more?) based on tag "[https://github.com/topics/grass-gis-addons grass-gis-addons]"
* Group photo 2

==== Monday, 5 June ====

* Connections in general, QGIS, rgrass, qgisprocess
* Parallelizations
* grass.jupyter

==== Tuesday, 6 June ====

* Connections in general, QGIS
* Parallelizations
* grass.jupyter

==== Wednesday, 7 June ====

* Departure

=== Social events ===

==== Friday, 2 June ====

Dinner at 7pm: [https://www.uveverky.com/kontakt/ U veverku pub] ([https://en.mapy.cz/s/jumomotupu map])

==== Saturday, 3 June ====

Dinner at 6pm: [https://unetickypivovar.cz/en Únětický pivovar] ([https://en.mapy.cz/s/mubutetoba map])

* 3:20 or 3:41pm train from Podbaba (15min walk) to Roztoky
* [https://en.mapy.cz/s/dabavojufa walk 1:30min]

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topics'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
| Czech Republic
| June 1
| June 7
| Python: create_location ([https://github.com/OSGeo/grass/issues/1987 #1987]), Graphical Modeler improvements and single window layout integration
|
|-
|2
| Micha Silver
| Israel
| June 2
| June 6
| Addon to derive soil moisture from Sentinel 2
|
|-
|3
|[https://www.osgeo.org/member/kudrnovsky/ Helmut Kudrnovsky]
| Austria
| June 2 (18:37) by train
| June 4 (18:24) by train
| support CMake transition
|
|-
|4
|[[User:Neteler|Markus Neteler]]
| Germany
| June 2 (17:17)
| June 6 (12:43)
| translations, manual pages, ..., see [[Talk:GRASS_Community_Meeting_Prague_2023#Markus_Neteler|my list in "Discussion" page]]
|
|-
|5
|[[User:pesekon2|Ondřej Pešek]]
| Czech Republic
| June 2 (17:17)
| June 6 (12:43)
| Python 3.12-connected issues, gmodeler
|
|-
|6
| [[User:helena|Helena Mitasova]]
| United States
| June 2
| June 6
|
|
|-
|7
| [[User:wenzeslaus|Vaclav Petras]]
| United States
| June 1
| June 7
| init and other Python API topics, support CMake transition, revise connection with QGIS and other tools, funding
|
|-
|8
| [[User:Annakrat|Anna Petrasova]]
| United States
| June 1
| June 7
| parallelization documentation, grass.jupyter, R and QGIS integration
|
|-
|9
| [[User:Ctwhite|Corey White]]
| United States
| June 2 (10:55)
| June 7
| Connections with other tools, OpenPlains, JSON outputs
|
|-
|10
| [[User:MarisN|Maris Nartiss]]
| Latvia
| June 2 (14:30)
| June 6 (12:00)
| Improvements of imagery modules (push i.svm.*; i.signatures; ?)
|-
|11
| [[User:Aaronsms|Aaron Saw Min Sern]]
| Singapore
| June 1
| June 7
| Support CMake transition, r.mapcalc parallelization
|
|-
|12
| [[User:Ldesousa|Luís de Sousa]]
| The Netherlands
| June 1 (20:00)
| June 5 (20:45)
| Update r.mblend add-on; test CMake transition.
|
|-
|13
| Caitlin Haedrich
| United States
| June 1
| June 7
| grass.jupyter
|
|-
|14
| Linda Kladivová
| Czech Republic
| June 2
| June 6
| Single-Window layout issues and improvements
|
|-
|15
| Carmen Tawalika
| Germany
| June 2 (17:17)
| June 6 (12:43)
| Happy to assist with general topics like documentation + automation, in doubt something related to actinia
|
|-
|16
| Floris Vanderhaeghe
| Belgium
| June 3 (train 19:17)
| June 6 (train 8:25)
| Helping in interfacing GRASS from R (rgrass & qgisprocess packages)
|
|-
|}

If you are arriving or departing on the days of the event, please specify the time, too.

=== Via chat or hangout ===

Join our [https://app.gitter.im/#/room/#grassgis_community:gitter.im Gitter chatroom]

Gitter has a video (and backup will be Zoom).

Participating virtually:

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!'''Topics'''
!'''Times, synchronous or fully asynchronous'''
!'''Notes'''
|-
|1
|[[User:Baharmon|Brendan Harmon]]
| United States
| Update integration with QGIS
| Available 8:00 AM CST (UTC-6) onwards
|
|-
|2
|[[User:veroandreo|Veronica Andreo]]
| Argentina
| Mission and vision, interfaces with QGIS and R, sponsoring, ... [https://grasswiki.osgeo.org/wiki/Talk:GRASS_Community_Meeting_Prague_2023#Vero see discussion tab]
| available from 8:00 AM ART (UTC-3) onward
|
|-
|3
|[[User:Nobeeakon|Daniel T]]
| Mexico
|
| some availability through the days :/
|
|-
|4
|[[User:LBartoletti|Loïc Bartoletti]]
| France
| QGIS Integration, support CMake transition
|
|-
|}

==== Timing of hangout meetings ====

Vero: available from 8:00 AM ART (UTC-3) onward

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install git and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :) Find the latest information on the [https://matrix.to/#/#grassgis_sprint:gitter.im Gitter Channel].

== Photos ==
Day 1
<gallery mode="slideshow">
Image:Devs at work.jpg|Hard at work on the first day
Image:Lively discussion.jpg|Lively discussion
Image:Dinner day 1.jpg|Dinner at a nearby pub
</gallery>

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS_GIS at OSGeo Virtual Community Sprint 2020]]!
* ''Is the GRASS Community Meeting just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software.
* ''Is the GRASS Community Meeting for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community meeting?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Report and press release ==

TBD: After the event :-)

We'll esp. craft a report for our sponsors.

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

GRASS Community Meeting Prague 2023

2023-06-03T08:08:36Z

⚠️Landa: /* Saturday, 3 June */

{{toc|right}}
The GRASS GIS team is organizing the ''GRASS GIS Community Meeting with contributors, power users and developers'' from '''June 2 to June 6, 2023''' to celebrate GRASS GIS '''40th birthday''' (by contributing to GRASS GIS of course).

<gallery mode="slideshow">
Image:grass-sprint-prague.jpg|Prague 2013
Image:Grass_sprint2018_bonn_fotowall.jpg|Bonn 2018
</gallery>

== Purpose ==

GRASS GIS Community Meeting is a great occasion for folks to support the development by actively contributing to the source code, documentation (manuals, wiki, tutorials), translations, website or likewise. The '''community''' meeting is also a get-together where supporters, contributors, power users and developers make decisions and tackle larger problems related to the project, discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. We welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R, OGC Services and desiring to '''celebrate with us the 40th GRASS GIS birthday!!'''

In this meeting, we will work on GRASS GIS and integrations with related OSGeo projects. We will revise connection to QGIS to make it easier to maintain, and we will work on migration of the build to CMake to improve Windows builds including PDAL support. Furthermore, we will start moving documentation to Markdown to make it easier to contribute to and we will add images and examples for tools and workflows which still miss them. Finally, we will automate and document maintenance processes to reduce the burden on maintainers and thus improve the project sustainability.

Note that while we have our general plan, we can't accept any earmarked donations, i.e., we can't make any promises for a specific work to be done. We do require participants to work on GRASS GIS or connections to other projects. However, we leave them the freedom to work on what they think is the best contribution to the project at that time given their skills and time available.

For the detailed agenda and individual's plans, see below.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travel and accommodation expenses for GRASS developers who volunteer their time. If you are interested in sponsoring the GRASS Community Meeting, please see our

::: '''[https://opencollective.com/osgeo/projects/grass/contribute/grass-community-meeting-prague-2023-55074 OpenCollective GRASS Community Meeting Prague 2023 Tier]'''

Any surplus at the end of the event will used for future activities of the GRASS GIS project such as the successful [[Student Grants|student mini grant program]].

This GRASS Community Meeting is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. Community meetings are important opportunities for developers to discuss, fix bugs, plan the direction for the project and work on new features. Please see below for the detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community meeting will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Meeting:

[[File:Osgeo logo.png|none|left|alt=Light and dark green logo of OSGeo saying Your Open Source Compass|Open Source Geospatial Foundation]]
* [https://www.osgeo.org/ OSGeo]: 7303 USD (approved budget contribution, [https://www.loomio.com/p/2m75BZkL/motion-to-approve-7303-to-support-grass-gis-community-meeting motion])

[[File:FOSSGIS_eV_logo.png|none|left|400px|alt=Logo of FOSSGIS e.V.|FOSSGIS e.V.]]
* [https://www.fossgis.de/ FOSSGIS e.V.]: 5000 EUR (approved budget contribution, [https://www.fossgis.de/wiki/F%C3%B6rderantr%C3%A4ge/GRASS_GIS_Community_Meeting_2023 request])

[[File:OSGeo JP logo for web.png|none|left|400px|alt=OSGeo.JP]]
* [https://www.osgeo.jp/ OSGeo Japan]: 550 USD (through Open Collective)

Individuals:
* MarWe 50 USD
* Nick Brady 50 USD
* José Ramón 50 USD
* Johannes Brauner 30 USD
* Peter Löwe 30 USD
* Evan Kay 10 USD
* Joaquin Perez Valera 5 USD
* Anonymous sponsors 2750 USD

In-kind contributions:

* Faculty of Civil Engineering Czech Technical University in Prague (FCE CTU) - space and personnel time (planning, preparation)
* North Carolina State University - personnel time (planning, preparation)
* mundialis GmbH & Co. KG - personnel time (planning, preparation)
* CONICET - personnel time (planning, preparation)

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the meeting whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Thákurova 7/2077, Prague 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from, reimbursements depending on the financial contributions provided by the community
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/cs/financni-trhy/devizovy-trh/kurzy-devizoveho-trhu/kurzy-devizoveho-trhu/ current rates]).

Please let us know your time of arrival and departure, so we can book accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

During the meeting we will work on GRASS GIS on these tasks (please add more!):

* We will update and revise the [https://github.com/qgis/QGIS/tree/master/python/plugins/grassprovider GRASS GIS Integration with QGIS] to simplify maintenance.
* Furthermore, we will migrate the compilation technology to CMake to significantly improve the Windows builds including PDAL support and become binary compatible with OSGeo4W.
* The extensive GRASS documentation will be converted from HTML to Markdown to facilitate future collaboration.
* Pictures, examples and workflows will be added to the documentation where they are still missing.
* Software maintenance processes are automated and documented to reduce the burden on maintainers and thus improve the sustainability of the project.

This means that there are tasks from both the programming and documentation areas to appeal to a wide range of interested parties.

Further details about the action items you '''find [[Talk:GRASS Community Meeting Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

(agenda is under development, but also flexible)

==== Thursday, 1 June ====

* Arrival

==== Friday, 2 June ====

* 9:00 meeting starts in the room B-868
* Lunch: 12:45 NTK
* Review the plan for the next days
* API for use in Python and in other projects (e.g., QGIS)
* Parallelizations

==== Saturday, 3 June ====

* Reducing cost of distribution on Windows
* Convert GRASS GIS documentation from HTML to Markdown and implement new documentation system (mkdocs?)
* Group photo 1
* Outdoor social evening

==== Sunday, 4 June ====

* Compilation CMake (Windows, Linux)
* Connections in general, rgrass, qgisprocess
* GRASS GIS addons overview generator for entire GitHub (and more?) based on tag "[https://github.com/topics/grass-gis-addons grass-gis-addons]"
* Group photo 2

==== Monday, 5 June ====

* Connections in general, QGIS, rgrass, qgisprocess
* Parallelizations
* grass.jupyter

==== Tuesday, 6 June ====

* Connections in general, QGIS
* Parallelizations
* grass.jupyter

==== Wednesday, 7 June ====

* Departure

=== Social events ===

==== Friday, 2 June ====

Dinner at 7pm: [https://www.uveverky.com/kontakt/ U veverku pub] ([https://en.mapy.cz/s/jumomotupu map])

==== Saturday, 3 June ====

Dinner at 6pm: [https://unetickypivovar.cz/en Únětický pivovar] ([https://en.mapy.cz/s/mubutetoba map])



* 3:20 or 3:41pm train from Podbaba (15min walk) to Roztoky
* [https://en.mapy.cz/s/dabavojufa walk 1:30min]

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topics'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
| Czech Republic
| June 1
| June 7
| Python: create_location ([https://github.com/OSGeo/grass/issues/1987 #1987]), Graphical Modeler improvements and single window layout integration
|
|-
|2
| Micha Silver
| Israel
| June 2
| June 6
| Addon to derive soil moisture from Sentinel 2
|
|-
|3
|[https://www.osgeo.org/member/kudrnovsky/ Helmut Kudrnovsky]
| Austria
| June 2 (18:37) by train
| June 4 (18:24) by train
| support CMake transition
|
|-
|4
|[[User:Neteler|Markus Neteler]]
| Germany
| June 2 (17:17)
| June 6 (12:43)
| translations, manual pages, ..., see [[Talk:GRASS_Community_Meeting_Prague_2023#Markus_Neteler|my list in "Discussion" page]]
|
|-
|5
|[[User:pesekon2|Ondřej Pešek]]
| Czech Republic
| June 2 (17:17)
| June 6 (12:43)
| Python 3.12-connected issues, gmodeler
|
|-
|6
| [[User:helena|Helena Mitasova]]
| United States
| June 2
| June 6
|
|
|-
|7
| [[User:wenzeslaus|Vaclav Petras]]
| United States
| June 1
| June 7
| init and other Python API topics, support CMake transition, revise connection with QGIS and other tools, funding
|
|-
|8
| [[User:Annakrat|Anna Petrasova]]
| United States
| June 1
| June 7
| parallelization documentation, grass.jupyter, R and QGIS integration
|
|-
|9
| [[User:Ctwhite|Corey White]]
| United States
| June 2 (10:55)
| June 7
| Connections with other tools, OpenPlains, JSON outputs
|
|-
|10
| [[User:MarisN|Maris Nartiss]]
| Latvia
| June 2 (14:30)
| June 6 (12:00)
| Improvements of imagery modules (push i.svm.*; i.signatures; ?)
|-
|11
| [[User:Aaronsms|Aaron Saw Min Sern]]
| Singapore
| June 1
| June 7
| Support CMake transition, r.mapcalc parallelization
|
|-
|12
| [[User:Ldesousa|Luís de Sousa]]
| The Netherlands
| June 1 (20:00)
| June 5 (20:45)
| Update r.mblend add-on; test CMake transition.
|
|-
|13
| Caitlin Haedrich
| United States
| June 1
| June 7
| grass.jupyter
|
|-
|14
| Linda Kladivová
| Czech Republic
| June 2
| June 6
| Single-Window layout issues and improvements
|
|-
|15
| Carmen Tawalika
| Germany
| June 2 (17:17)
| June 6 (12:43)
| Happy to assist with general topics like documentation + automation, in doubt something related to actinia
|
|-
|16
| Floris Vanderhaeghe
| Belgium
| June 3 (train 19:17)
| June 6 (train 8:25)
| Helping in interfacing GRASS from R (rgrass & qgisprocess packages)
|
|-
|}

If you are arriving or departing on the days of the event, please specify the time, too.

=== Via chat or hangout ===

Join our [https://app.gitter.im/#/room/#grassgis_community:gitter.im Gitter chatroom]

Gitter has a video (and backup will be Zoom).

Participating virtually:

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!'''Topics'''
!'''Times, synchronous or fully asynchronous'''
!'''Notes'''
|-
|1
|[[User:Baharmon|Brendan Harmon]]
| United States
| Update integration with QGIS
| Available 8:00 AM CST (UTC-6) onwards
|
|-
|2
|[[User:veroandreo|Veronica Andreo]]
| Argentina
| Mission and vision, interfaces with QGIS and R, sponsoring, ... [https://grasswiki.osgeo.org/wiki/Talk:GRASS_Community_Meeting_Prague_2023#Vero see discussion tab]
| available from 8:00 AM ART (UTC-3) onward
|
|-
|3
|[[User:Nobeeakon|Daniel T]]
| Mexico
|
| some availability through the days :/
|
|-
|4
|[[User:LBartoletti|Loïc Bartoletti]]
| France
| QGIS Integration, support CMake transition
|
|-
|}

==== Timing of hangout meetings ====

Vero: available from 8:00 AM ART (UTC-3) onward

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install git and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :) Find the latest information on the [https://matrix.to/#/#grassgis_sprint:gitter.im Gitter Channel].

== Photos ==
Day 1
[[File:Devs at work.jpg|thumb|Day 1. Hard at work on the first day]]
[[File:Lively discussion.jpg|thumb|Day 1. Lively discussion]]
[[File:Dinner day 1.jpg|thumb|Day 1. Dinner at a nearby pub]]

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS_GIS at OSGeo Virtual Community Sprint 2020]]!
* ''Is the GRASS Community Meeting just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software.
* ''Is the GRASS Community Meeting for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community meeting?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Report and press release ==

TBD: After the event :-)

We'll esp. craft a report for our sponsors.

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

GRASS Community Meeting Prague 2023

2023-06-03T07:39:06Z

⚠️Landa: /* Saturday, 3 June */

{{toc|right}}
The GRASS GIS team is organizing the ''GRASS GIS Community Meeting with contributors, power users and developers'' from '''June 2 to June 6, 2023''' to celebrate GRASS GIS '''40th birthday''' (by contributing to GRASS GIS of course).

<gallery mode="slideshow">
Image:grass-sprint-prague.jpg|Prague 2013
Image:Grass_sprint2018_bonn_fotowall.jpg|Bonn 2018
</gallery>

== Purpose ==

GRASS GIS Community Meeting is a great occasion for folks to support the development by actively contributing to the source code, documentation (manuals, wiki, tutorials), translations, website or likewise. The '''community''' meeting is also a get-together where supporters, contributors, power users and developers make decisions and tackle larger problems related to the project, discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. We welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R, OGC Services and desiring to '''celebrate with us the 40th GRASS GIS birthday!!'''

In this meeting, we will work on GRASS GIS and integrations with related OSGeo projects. We will revise connection to QGIS to make it easier to maintain, and we will work on migration of the build to CMake to improve Windows builds including PDAL support. Furthermore, we will start moving documentation to Markdown to make it easier to contribute to and we will add images and examples for tools and workflows which still miss them. Finally, we will automate and document maintenance processes to reduce the burden on maintainers and thus improve the project sustainability.

Note that while we have our general plan, we can't accept any earmarked donations, i.e., we can't make any promises for a specific work to be done. We do require participants to work on GRASS GIS or connections to other projects. However, we leave them the freedom to work on what they think is the best contribution to the project at that time given their skills and time available.

For the detailed agenda and individual's plans, see below.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travel and accommodation expenses for GRASS developers who volunteer their time. If you are interested in sponsoring the GRASS Community Meeting, please see our

::: '''[https://opencollective.com/osgeo/projects/grass/contribute/grass-community-meeting-prague-2023-55074 OpenCollective GRASS Community Meeting Prague 2023 Tier]'''

Any surplus at the end of the event will used for future activities of the GRASS GIS project such as the successful [[Student Grants|student mini grant program]].

This GRASS Community Meeting is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. Community meetings are important opportunities for developers to discuss, fix bugs, plan the direction for the project and work on new features. Please see below for the detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community meeting will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Meeting:

[[File:Osgeo logo.png|none|left|alt=Light and dark green logo of OSGeo saying Your Open Source Compass|Open Source Geospatial Foundation]]
* [https://www.osgeo.org/ OSGeo]: 7303 USD (approved budget contribution, [https://www.loomio.com/p/2m75BZkL/motion-to-approve-7303-to-support-grass-gis-community-meeting motion])

[[File:FOSSGIS_eV_logo.png|none|left|400px|alt=Logo of FOSSGIS e.V.|FOSSGIS e.V.]]
* [https://www.fossgis.de/ FOSSGIS e.V.]: 5000 EUR (approved budget contribution, [https://www.fossgis.de/wiki/F%C3%B6rderantr%C3%A4ge/GRASS_GIS_Community_Meeting_2023 request])

[[File:OSGeo JP logo for web.png|none|left|400px|alt=OSGeo.JP]]
* [https://www.osgeo.jp/ OSGeo Japan]: 550 USD (through Open Collective)

Individuals:
* MarWe 50 USD
* Nick Brady 50 USD
* José Ramón 50 USD
* Johannes Brauner 30 USD
* Peter Löwe 30 USD
* Evan Kay 10 USD
* Joaquin Perez Valera 5 USD
* Anonymous sponsors 2750 USD

In-kind contributions:

* Faculty of Civil Engineering Czech Technical University in Prague (FCE CTU) - space and personnel time (planning, preparation)
* North Carolina State University - personnel time (planning, preparation)
* mundialis GmbH & Co. KG - personnel time (planning, preparation)
* CONICET - personnel time (planning, preparation)

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the meeting whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Thákurova 7/2077, Prague 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from, reimbursements depending on the financial contributions provided by the community
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/cs/financni-trhy/devizovy-trh/kurzy-devizoveho-trhu/kurzy-devizoveho-trhu/ current rates]).

Please let us know your time of arrival and departure, so we can book accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

During the meeting we will work on GRASS GIS on these tasks (please add more!):

* We will update and revise the [https://github.com/qgis/QGIS/tree/master/python/plugins/grassprovider GRASS GIS Integration with QGIS] to simplify maintenance.
* Furthermore, we will migrate the compilation technology to CMake to significantly improve the Windows builds including PDAL support and become binary compatible with OSGeo4W.
* The extensive GRASS documentation will be converted from HTML to Markdown to facilitate future collaboration.
* Pictures, examples and workflows will be added to the documentation where they are still missing.
* Software maintenance processes are automated and documented to reduce the burden on maintainers and thus improve the sustainability of the project.

This means that there are tasks from both the programming and documentation areas to appeal to a wide range of interested parties.

Further details about the action items you '''find [[Talk:GRASS Community Meeting Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

(agenda is under development, but also flexible)

==== Thursday, 1 June ====

* Arrival

==== Friday, 2 June ====

* 9:00 meeting starts in the room B-868
* Lunch: 12:45 NTK
* Review the plan for the next days
* API for use in Python and in other projects (e.g., QGIS)
* Parallelizations

==== Saturday, 3 June ====

* Reducing cost of distribution on Windows
* Convert GRASS GIS documentation from HTML to Markdown and implement new documentation system (mkdocs?)
* Group photo 1
* Outdoor social evening

==== Sunday, 4 June ====

* Compilation CMake (Windows, Linux)
* Connections in general, rgrass, qgisprocess
* GRASS GIS addons overview generator for entire GitHub (and more?) based on tag "[https://github.com/topics/grass-gis-addons grass-gis-addons]"
* Group photo 2

==== Monday, 5 June ====

* Connections in general, QGIS, rgrass, qgisprocess
* Parallelizations
* grass.jupyter

==== Tuesday, 6 June ====

* Connections in general, QGIS
* Parallelizations
* grass.jupyter

==== Wednesday, 7 June ====

* Departure

=== Social events ===

==== Friday, 2 June ====

Dinner at 7pm: [https://www.uveverky.com/kontakt/ U veverku pub] ([https://en.mapy.cz/s/jumomotupu map])

==== Saturday, 3 June ====

Dinner at 6pm: [https://unetickypivovar.cz/en Únětický pivovar] ([https://en.mapy.cz/s/mubutetoba map])

Option 1:

* 4:21pm bus from Dejvicka (underground station) to Vyhledy
* [https://en.mapy.cz/s/rocabosumu walk 45min]

Option 2:

* 3:20 or 3:41pm train from Podbaba (15min walk) to Roztoky
* [https://en.mapy.cz/s/dabavojufa walk 1:30min]

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topics'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
| Czech Republic
| June 1
| June 7
| Python: create_location ([https://github.com/OSGeo/grass/issues/1987 #1987]), Graphical Modeler improvements and single window layout integration
|
|-
|2
| Micha Silver
| Israel
| June 2
| June 6
| Addon to derive soil moisture from Sentinel 2
|
|-
|3
|[https://www.osgeo.org/member/kudrnovsky/ Helmut Kudrnovsky]
| Austria
| June 2 (18:37) by train
| June 4 (18:24) by train
| support CMake transition
|
|-
|4
|[[User:Neteler|Markus Neteler]]
| Germany
| June 2 (17:17)
| June 6 (12:43)
| translations, manual pages, ..., see [[Talk:GRASS_Community_Meeting_Prague_2023#Markus_Neteler|my list in "Discussion" page]]
|
|-
|5
|[[User:pesekon2|Ondřej Pešek]]
| Czech Republic
| June 2 (17:17)
| June 6 (12:43)
| Python 3.12-connected issues, gmodeler
|
|-
|6
| [[User:helena|Helena Mitasova]]
| United States
| June 2
| June 6
|
|
|-
|7
| [[User:wenzeslaus|Vaclav Petras]]
| United States
| June 1
| June 7
| init and other Python API topics, support CMake transition, revise connection with QGIS and other tools, funding
|
|-
|8
| [[User:Annakrat|Anna Petrasova]]
| United States
| June 1
| June 7
| parallelization documentation, grass.jupyter, R and QGIS integration
|
|-
|9
| [[User:Ctwhite|Corey White]]
| United States
| June 2 (10:55)
| June 7
| Connections with other tools, OpenPlains, JSON outputs
|
|-
|10
| [[User:MarisN|Maris Nartiss]]
| Latvia
| June 2 (14:30)
| June 6 (12:00)
| Improvements of imagery modules (push i.svm.*; i.signatures; ?)
|-
|11
| [[User:Aaronsms|Aaron Saw Min Sern]]
| Singapore
| June 1
| June 7
| Support CMake transition, r.mapcalc parallelization
|
|-
|12
| [[User:Ldesousa|Luís de Sousa]]
| The Netherlands
| June 1 (20:00)
| June 5 (20:45)
| Update r.mblend add-on; test CMake transition.
|
|-
|13
| Caitlin Haedrich
| United States
| June 1
| June 7
| grass.jupyter
|
|-
|14
| Linda Kladivová
| Czech Republic
| June 2
| June 6
| Single-Window layout issues and improvements
|
|-
|15
| Carmen Tawalika
| Germany
| June 2 (17:17)
| June 6 (12:43)
| Happy to assist with general topics like documentation + automation, in doubt something related to actinia
|
|-
|16
| Floris Vanderhaeghe
| Belgium
| June 3 (train 19:17)
| June 6 (train 8:25)
| Helping in interfacing GRASS from R (rgrass & qgisprocess packages)
|
|-
|}

If you are arriving or departing on the days of the event, please specify the time, too.

=== Via chat or hangout ===

Join our [https://app.gitter.im/#/room/#grassgis_community:gitter.im Gitter chatroom]

Gitter has a video (and backup will be Zoom).

Participating virtually:

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!'''Topics'''
!'''Times, synchronous or fully asynchronous'''
!'''Notes'''
|-
|1
|[[User:Baharmon|Brendan Harmon]]
| United States
| Update integration with QGIS
| Available 8:00 AM CST (UTC-6) onwards
|
|-
|2
|[[User:veroandreo|Veronica Andreo]]
| Argentina
| Mission and vision, interfaces with QGIS and R, sponsoring, ... [https://grasswiki.osgeo.org/wiki/Talk:GRASS_Community_Meeting_Prague_2023#Vero see discussion tab]
| available from 8:00 AM ART (UTC-3) onward
|
|-
|3
|[[User:Nobeeakon|Daniel T]]
| Mexico
|
| some availability through the days :/
|
|-
|4
|[[User:LBartoletti|Loïc Bartoletti]]
| France
| QGIS Integration, support CMake transition
|
|-
|}

==== Timing of hangout meetings ====

Vero: available from 8:00 AM ART (UTC-3) onward

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install git and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :)

== Photos ==

Also during the event :)

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS_GIS at OSGeo Virtual Community Sprint 2020]]!
* ''Is the GRASS Community Meeting just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software.
* ''Is the GRASS Community Meeting for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community meeting?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Report and press release ==

TBD: After the event :-)

We'll esp. craft a report for our sponsors.

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

GRASS Community Meeting Prague 2023

2023-06-03T07:37:57Z

⚠️Landa: /* Social events */

{{toc|right}}
The GRASS GIS team is organizing the ''GRASS GIS Community Meeting with contributors, power users and developers'' from '''June 2 to June 6, 2023''' to celebrate GRASS GIS '''40th birthday''' (by contributing to GRASS GIS of course).

<gallery mode="slideshow">
Image:grass-sprint-prague.jpg|Prague 2013
Image:Grass_sprint2018_bonn_fotowall.jpg|Bonn 2018
</gallery>

== Purpose ==

GRASS GIS Community Meeting is a great occasion for folks to support the development by actively contributing to the source code, documentation (manuals, wiki, tutorials), translations, website or likewise. The '''community''' meeting is also a get-together where supporters, contributors, power users and developers make decisions and tackle larger problems related to the project, discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. We welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R, OGC Services and desiring to '''celebrate with us the 40th GRASS GIS birthday!!'''

In this meeting, we will work on GRASS GIS and integrations with related OSGeo projects. We will revise connection to QGIS to make it easier to maintain, and we will work on migration of the build to CMake to improve Windows builds including PDAL support. Furthermore, we will start moving documentation to Markdown to make it easier to contribute to and we will add images and examples for tools and workflows which still miss them. Finally, we will automate and document maintenance processes to reduce the burden on maintainers and thus improve the project sustainability.

Note that while we have our general plan, we can't accept any earmarked donations, i.e., we can't make any promises for a specific work to be done. We do require participants to work on GRASS GIS or connections to other projects. However, we leave them the freedom to work on what they think is the best contribution to the project at that time given their skills and time available.

For the detailed agenda and individual's plans, see below.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travel and accommodation expenses for GRASS developers who volunteer their time. If you are interested in sponsoring the GRASS Community Meeting, please see our

::: '''[https://opencollective.com/osgeo/projects/grass/contribute/grass-community-meeting-prague-2023-55074 OpenCollective GRASS Community Meeting Prague 2023 Tier]'''

Any surplus at the end of the event will used for future activities of the GRASS GIS project such as the successful [[Student Grants|student mini grant program]].

This GRASS Community Meeting is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. Community meetings are important opportunities for developers to discuss, fix bugs, plan the direction for the project and work on new features. Please see below for the detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community meeting will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Meeting:

[[File:Osgeo logo.png|none|left|alt=Light and dark green logo of OSGeo saying Your Open Source Compass|Open Source Geospatial Foundation]]
* [https://www.osgeo.org/ OSGeo]: 7303 USD (approved budget contribution, [https://www.loomio.com/p/2m75BZkL/motion-to-approve-7303-to-support-grass-gis-community-meeting motion])

[[File:FOSSGIS_eV_logo.png|none|left|400px|alt=Logo of FOSSGIS e.V.|FOSSGIS e.V.]]
* [https://www.fossgis.de/ FOSSGIS e.V.]: 5000 EUR (approved budget contribution, [https://www.fossgis.de/wiki/F%C3%B6rderantr%C3%A4ge/GRASS_GIS_Community_Meeting_2023 request])

[[File:OSGeo JP logo for web.png|none|left|400px|alt=OSGeo.JP]]
* [https://www.osgeo.jp/ OSGeo Japan]: 550 USD (through Open Collective)

Individuals:
* MarWe 50 USD
* Nick Brady 50 USD
* José Ramón 50 USD
* Johannes Brauner 30 USD
* Peter Löwe 30 USD
* Evan Kay 10 USD
* Joaquin Perez Valera 5 USD
* Anonymous sponsors 2750 USD

In-kind contributions:

* Faculty of Civil Engineering Czech Technical University in Prague (FCE CTU) - space and personnel time (planning, preparation)
* North Carolina State University - personnel time (planning, preparation)
* mundialis GmbH & Co. KG - personnel time (planning, preparation)
* CONICET - personnel time (planning, preparation)

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the meeting whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Thákurova 7/2077, Prague 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from, reimbursements depending on the financial contributions provided by the community
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/cs/financni-trhy/devizovy-trh/kurzy-devizoveho-trhu/kurzy-devizoveho-trhu/ current rates]).

Please let us know your time of arrival and departure, so we can book accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

During the meeting we will work on GRASS GIS on these tasks (please add more!):

* We will update and revise the [https://github.com/qgis/QGIS/tree/master/python/plugins/grassprovider GRASS GIS Integration with QGIS] to simplify maintenance.
* Furthermore, we will migrate the compilation technology to CMake to significantly improve the Windows builds including PDAL support and become binary compatible with OSGeo4W.
* The extensive GRASS documentation will be converted from HTML to Markdown to facilitate future collaboration.
* Pictures, examples and workflows will be added to the documentation where they are still missing.
* Software maintenance processes are automated and documented to reduce the burden on maintainers and thus improve the sustainability of the project.

This means that there are tasks from both the programming and documentation areas to appeal to a wide range of interested parties.

Further details about the action items you '''find [[Talk:GRASS Community Meeting Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

(agenda is under development, but also flexible)

==== Thursday, 1 June ====

* Arrival

==== Friday, 2 June ====

* 9:00 meeting starts in the room B-868
* Lunch: 12:45 NTK
* Review the plan for the next days
* API for use in Python and in other projects (e.g., QGIS)
* Parallelizations

==== Saturday, 3 June ====

* Reducing cost of distribution on Windows
* Convert GRASS GIS documentation from HTML to Markdown and implement new documentation system (mkdocs?)
* Group photo 1
* Outdoor social evening

==== Sunday, 4 June ====

* Compilation CMake (Windows, Linux)
* Connections in general, rgrass, qgisprocess
* GRASS GIS addons overview generator for entire GitHub (and more?) based on tag "[https://github.com/topics/grass-gis-addons grass-gis-addons]"
* Group photo 2

==== Monday, 5 June ====

* Connections in general, QGIS, rgrass, qgisprocess
* Parallelizations
* grass.jupyter

==== Tuesday, 6 June ====

* Connections in general, QGIS
* Parallelizations
* grass.jupyter

==== Wednesday, 7 June ====

* Departure

=== Social events ===

==== Friday, 2 June ====

Dinner at 7pm: [https://www.uveverky.com/kontakt/ U veverku pub] ([https://en.mapy.cz/s/jumomotupu map])

==== Saturday, 3 June ====

Dinner at 6pm: [https://unetickypivovar.cz/en Únětický pivovar] ([https://en.mapy.cz/s/mubutetoba map])

Option 1:

* 4:30pm bus from Dejvicka (underground station) to Vyhledy
* [https://en.mapy.cz/s/rocabosumu walk 45min]

Option 2:

* 3:20 or 3:41pm train from Podbaba (15min walk) to Roztoky
* [https://en.mapy.cz/s/dabavojufa walk 1:30min]

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topics'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
| Czech Republic
| June 1
| June 7
| Python: create_location ([https://github.com/OSGeo/grass/issues/1987 #1987]), Graphical Modeler improvements and single window layout integration
|
|-
|2
| Micha Silver
| Israel
| June 2
| June 6
| Addon to derive soil moisture from Sentinel 2
|
|-
|3
|[https://www.osgeo.org/member/kudrnovsky/ Helmut Kudrnovsky]
| Austria
| June 2 (18:37) by train
| June 4 (18:24) by train
| support CMake transition
|
|-
|4
|[[User:Neteler|Markus Neteler]]
| Germany
| June 2 (17:17)
| June 6 (12:43)
| translations, manual pages, ..., see [[Talk:GRASS_Community_Meeting_Prague_2023#Markus_Neteler|my list in "Discussion" page]]
|
|-
|5
|[[User:pesekon2|Ondřej Pešek]]
| Czech Republic
| June 2 (17:17)
| June 6 (12:43)
| Python 3.12-connected issues, gmodeler
|
|-
|6
| [[User:helena|Helena Mitasova]]
| United States
| June 2
| June 6
|
|
|-
|7
| [[User:wenzeslaus|Vaclav Petras]]
| United States
| June 1
| June 7
| init and other Python API topics, support CMake transition, revise connection with QGIS and other tools, funding
|
|-
|8
| [[User:Annakrat|Anna Petrasova]]
| United States
| June 1
| June 7
| parallelization documentation, grass.jupyter, R and QGIS integration
|
|-
|9
| [[User:Ctwhite|Corey White]]
| United States
| June 2 (10:55)
| June 7
| Connections with other tools, OpenPlains, JSON outputs
|
|-
|10
| [[User:MarisN|Maris Nartiss]]
| Latvia
| June 2 (14:30)
| June 6 (12:00)
| Improvements of imagery modules (push i.svm.*; i.signatures; ?)
|-
|11
| [[User:Aaronsms|Aaron Saw Min Sern]]
| Singapore
| June 1
| June 7
| Support CMake transition, r.mapcalc parallelization
|
|-
|12
| [[User:Ldesousa|Luís de Sousa]]
| The Netherlands
| June 1 (20:00)
| June 5 (20:45)
| Update r.mblend add-on; test CMake transition.
|
|-
|13
| Caitlin Haedrich
| United States
| June 1
| June 7
| grass.jupyter
|
|-
|14
| Linda Kladivová
| Czech Republic
| June 2
| June 6
| Single-Window layout issues and improvements
|
|-
|15
| Carmen Tawalika
| Germany
| June 2 (17:17)
| June 6 (12:43)
| Happy to assist with general topics like documentation + automation, in doubt something related to actinia
|
|-
|16
| Floris Vanderhaeghe
| Belgium
| June 3 (train 19:17)
| June 6 (train 8:25)
| Helping in interfacing GRASS from R (rgrass & qgisprocess packages)
|
|-
|}

If you are arriving or departing on the days of the event, please specify the time, too.

=== Via chat or hangout ===

Join our [https://app.gitter.im/#/room/#grassgis_community:gitter.im Gitter chatroom]

Gitter has a video (and backup will be Zoom).

Participating virtually:

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!'''Topics'''
!'''Times, synchronous or fully asynchronous'''
!'''Notes'''
|-
|1
|[[User:Baharmon|Brendan Harmon]]
| United States
| Update integration with QGIS
| Available 8:00 AM CST (UTC-6) onwards
|
|-
|2
|[[User:veroandreo|Veronica Andreo]]
| Argentina
| Mission and vision, interfaces with QGIS and R, sponsoring, ... [https://grasswiki.osgeo.org/wiki/Talk:GRASS_Community_Meeting_Prague_2023#Vero see discussion tab]
| available from 8:00 AM ART (UTC-3) onward
|
|-
|3
|[[User:Nobeeakon|Daniel T]]
| Mexico
|
| some availability through the days :/
|
|-
|4
|[[User:LBartoletti|Loïc Bartoletti]]
| France
| QGIS Integration, support CMake transition
|
|-
|}

==== Timing of hangout meetings ====

Vero: available from 8:00 AM ART (UTC-3) onward

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install git and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :)

== Photos ==

Also during the event :)

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS_GIS at OSGeo Virtual Community Sprint 2020]]!
* ''Is the GRASS Community Meeting just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software.
* ''Is the GRASS Community Meeting for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community meeting?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Report and press release ==

TBD: After the event :-)

We'll esp. craft a report for our sponsors.

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

GRASS Community Meeting Prague 2023

2023-06-02T12:22:16Z

⚠️Landa: /* Friday, 2 June */

{{toc|right}}
The GRASS GIS team is organizing the ''GRASS GIS Community Meeting with contributors, power users and developers'' from '''June 2 to June 6, 2023''' to celebrate GRASS GIS '''40th birthday''' (by contributing to GRASS GIS of course).

<gallery mode="slideshow">
Image:grass-sprint-prague.jpg|Prague 2013
Image:Grass_sprint2018_bonn_fotowall.jpg|Bonn 2018
</gallery>

== Purpose ==

GRASS GIS Community Meeting is a great occasion for folks to support the development by actively contributing to the source code, documentation (manuals, wiki, tutorials), translations, website or likewise. The '''community''' meeting is also a get-together where supporters, contributors, power users and developers make decisions and tackle larger problems related to the project, discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. We welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R, OGC Services and desiring to '''celebrate with us the 40th GRASS GIS birthday!!'''

In this meeting, we will work on GRASS GIS and integrations with related OSGeo projects. We will revise connection to QGIS to make it easier to maintain, and we will work on migration of the build to CMake to improve Windows builds including PDAL support. Furthermore, we will start moving documentation to Markdown to make it easier to contribute to and we will add images and examples for tools and workflows which still miss them. Finally, we will automate and document maintenance processes to reduce the burden on maintainers and thus improve the project sustainability.

Note that while we have our general plan, we can't accept any earmarked donations, i.e., we can't make any promises for a specific work to be done. We do require participants to work on GRASS GIS or connections to other projects. However, we leave them the freedom to work on what they think is the best contribution to the project at that time given their skills and time available.

For the detailed agenda and individual's plans, see below.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travel and accommodation expenses for GRASS developers who volunteer their time. If you are interested in sponsoring the GRASS Community Meeting, please see our

::: '''[https://opencollective.com/osgeo/projects/grass/contribute/grass-community-meeting-prague-2023-55074 OpenCollective GRASS Community Meeting Prague 2023 Tier]'''

Any surplus at the end of the event will used for future activities of the GRASS GIS project such as the successful [[Student Grants|student mini grant program]].

This GRASS Community Meeting is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. Community meetings are important opportunities for developers to discuss, fix bugs, plan the direction for the project and work on new features. Please see below for the detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community meeting will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Meeting:

[[File:Osgeo logo.png|none|left|alt=Light and dark green logo of OSGeo saying Your Open Source Compass|Open Source Geospatial Foundation]]
* [https://www.osgeo.org/ OSGeo]: 7303 USD (approved budget contribution, [https://www.loomio.com/p/2m75BZkL/motion-to-approve-7303-to-support-grass-gis-community-meeting motion])

[[File:FOSSGIS_eV_logo.png|none|left|400px|alt=Logo of FOSSGIS e.V.|FOSSGIS e.V.]]
* [https://www.fossgis.de/ FOSSGIS e.V.]: 5000 EUR (approved budget contribution, [https://www.fossgis.de/wiki/F%C3%B6rderantr%C3%A4ge/GRASS_GIS_Community_Meeting_2023 request])

[[File:OSGeo JP logo for web.png|none|left|400px|alt=OSGeo.JP]]
* [https://www.osgeo.jp/ OSGeo Japan]: 550 USD (through Open Collective)

Individuals:
* MarWe 50 USD
* Nick Brady 50 USD
* José Ramón 50 USD
* Johannes Brauner 30 USD
* Peter Löwe 30 USD
* Evan Kay 10 USD
* Joaquin Perez Valera 5 USD
* Anonymous sponsors 2750 USD

In-kind contributions:

* Faculty of Civil Engineering Czech Technical University in Prague (FCE CTU) - space and personnel time (planning, preparation)
* North Carolina State University - personnel time (planning, preparation)
* mundialis GmbH & Co. KG - personnel time (planning, preparation)
* CONICET - personnel time (planning, preparation)

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the meeting whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Thákurova 7/2077, Prague 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from, reimbursements depending on the financial contributions provided by the community
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/cs/financni-trhy/devizovy-trh/kurzy-devizoveho-trhu/kurzy-devizoveho-trhu/ current rates]).

Please let us know your time of arrival and departure, so we can book accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

During the meeting we will work on GRASS GIS on these tasks (please add more!):

* We will update and revise the [https://github.com/qgis/QGIS/tree/master/python/plugins/grassprovider GRASS GIS Integration with QGIS] to simplify maintenance.
* Furthermore, we will migrate the compilation technology to CMake to significantly improve the Windows builds including PDAL support and become binary compatible with OSGeo4W.
* The extensive GRASS documentation will be converted from HTML to Markdown to facilitate future collaboration.
* Pictures, examples and workflows will be added to the documentation where they are still missing.
* Software maintenance processes are automated and documented to reduce the burden on maintainers and thus improve the sustainability of the project.

This means that there are tasks from both the programming and documentation areas to appeal to a wide range of interested parties.

Further details about the action items you '''find [[Talk:GRASS Community Meeting Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

(agenda is under development, but also flexible)

==== Thursday, 1 June ====

* Arrival

==== Friday, 2 June ====

* 9:00 meeting starts in the room B-868
* Lunch: 12:45 NTK
* Review the plan for the next days
* API for use in Python and in other projects (e.g., QGIS)
* Parallelizations

==== Saturday, 3 June ====

* Reducing cost of distribution on Windows
* Convert GRASS GIS documentation from HTML to Markdown and implement new documentation system (mkdocs?)
* Group photo 1
* Outdoor social evening

==== Sunday, 4 June ====

* Compilation CMake (Windows, Linux)
* Connections in general, rgrass, qgisprocess
* GRASS GIS addons overview generator for entire GitHub (and more?) based on tag "[https://github.com/topics/grass-gis-addons grass-gis-addons]"
* Group photo 2

==== Monday, 5 June ====

* Connections in general, QGIS, rgrass, qgisprocess
* Parallelizations
* grass.jupyter

==== Tuesday, 6 June ====

* Connections in general, QGIS
* Parallelizations
* grass.jupyter

==== Wednesday, 7 June ====

* Departure

=== Social events ===

==== Friday, 2 June ====

Dinner at 7pm: [https://www.uveverky.com/kontakt/ U veverku pub] ([https://en.mapy.cz/s/jumomotupu map])

==== Saturday, 3 June ====

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topics'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
| Czech Republic
| June 1
| June 7
| Python: create_location ([https://github.com/OSGeo/grass/issues/1987 #1987]), Graphical Modeler improvements and single window layout integration
|
|-
|2
| Micha Silver
| Israel
| June 2
| June 6
| Addon to derive soil moisture from Sentinel 2
|
|-
|3
|[https://www.osgeo.org/member/kudrnovsky/ Helmut Kudrnovsky]
| Austria
| June 2 (18:37) by train
| June 4 (18:24) by train
| support CMake transition
|
|-
|4
|[[User:Neteler|Markus Neteler]]
| Germany
| June 2 (17:17)
| June 6 (12:43)
| translations, manual pages, ..., see [[Talk:GRASS_Community_Meeting_Prague_2023#Markus_Neteler|my list in "Discussion" page]]
|
|-
|5
|[[User:pesekon2|Ondřej Pešek]]
| Czech Republic
| June 2 (17:17)
| June 6 (12:43)
| Python 3.12-connected issues, gmodeler
|
|-
|6
| [[User:helena|Helena Mitasova]]
| United States
| June 2
| June 6
|
|
|-
|7
| [[User:wenzeslaus|Vaclav Petras]]
| United States
| June 1
| June 7
| init and other Python API topics, support CMake transition, revise connection with QGIS and other tools, funding
|
|-
|8
| [[User:Annakrat|Anna Petrasova]]
| United States
| June 1
| June 7
| parallelization documentation, grass.jupyter, R and QGIS integration
|
|-
|9
| [[User:Ctwhite|Corey White]]
| United States
| June 2 (10:55)
| June 7
| Connections with other tools, OpenPlains, JSON outputs
|
|-
|10
| [[User:MarisN|Maris Nartiss]]
| Latvia
| June 2 (14:30)
| June 6 (12:00)
| Improvements of imagery modules (push i.svm.*; i.signatures; ?)
|-
|11
| [[User:Aaronsms|Aaron Saw Min Sern]]
| Singapore
| June 1
| June 7
| Support CMake transition, r.mapcalc parallelization
|
|-
|12
| [[User:Ldesousa|Luís de Sousa]]
| The Netherlands
| June 1 (20:00)
| June 5 (20:45)
| Update r.mblend add-on; test CMake transition.
|
|-
|13
| Caitlin Haedrich
| United States
| June 1
| June 7
| grass.jupyter
|
|-
|14
| Linda Kladivová
| Czech Republic
| June 2
| June 6
| Single-Window layout issues and improvements
|
|-
|15
| Carmen Tawalika
| Germany
| June 2 (17:17)
| June 6 (12:43)
| Happy to assist with general topics like documentation + automation, in doubt something related to actinia
|
|-
|16
| Floris Vanderhaeghe
| Belgium
| June 3 (train 19:17)
| June 6 (train 8:25)
| Helping in interfacing GRASS from R (rgrass & qgisprocess packages)
|
|-
|}

If you are arriving or departing on the days of the event, please specify the time, too.

=== Via chat or hangout ===

Join our [https://app.gitter.im/#/room/#grassgis_community:gitter.im Gitter chatroom]

Gitter has a video (and backup will be Zoom).

Participating virtually:

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!'''Topics'''
!'''Times, synchronous or fully asynchronous'''
!'''Notes'''
|-
|1
|[[User:Baharmon|Brendan Harmon]]
| United States
| Update integration with QGIS
| Available 8:00 AM CST (UTC-6) onwards
|
|-
|2
|[[User:veroandreo|Veronica Andreo]]
| Argentina
| Mission and vision, interfaces with QGIS and R, sponsoring, ... [https://grasswiki.osgeo.org/wiki/Talk:GRASS_Community_Meeting_Prague_2023#Vero see discussion tab]
| available from 8:00 AM ART (UTC-3) onward
|
|-
|3
|[[User:Nobeeakon|Daniel T]]
| Mexico
|
| some availability through the days :/
|
|-
|4
|[[User:LBartoletti|Loïc Bartoletti]]
| France
| QGIS Integration, support CMake transition
|
|-
|}

==== Timing of hangout meetings ====

Vero: available from 8:00 AM ART (UTC-3) onward

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install git and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :)

== Photos ==

Also during the event :)

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS_GIS at OSGeo Virtual Community Sprint 2020]]!
* ''Is the GRASS Community Meeting just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software.
* ''Is the GRASS Community Meeting for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community meeting?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Report and press release ==

TBD: After the event :-)

We'll esp. craft a report for our sponsors.

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

GRASS Community Meeting Prague 2023

2023-06-02T12:21:59Z

⚠️Landa: /* Agenda - What we plan to do */

{{toc|right}}
The GRASS GIS team is organizing the ''GRASS GIS Community Meeting with contributors, power users and developers'' from '''June 2 to June 6, 2023''' to celebrate GRASS GIS '''40th birthday''' (by contributing to GRASS GIS of course).

<gallery mode="slideshow">
Image:grass-sprint-prague.jpg|Prague 2013
Image:Grass_sprint2018_bonn_fotowall.jpg|Bonn 2018
</gallery>

== Purpose ==

GRASS GIS Community Meeting is a great occasion for folks to support the development by actively contributing to the source code, documentation (manuals, wiki, tutorials), translations, website or likewise. The '''community''' meeting is also a get-together where supporters, contributors, power users and developers make decisions and tackle larger problems related to the project, discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. We welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R, OGC Services and desiring to '''celebrate with us the 40th GRASS GIS birthday!!'''

In this meeting, we will work on GRASS GIS and integrations with related OSGeo projects. We will revise connection to QGIS to make it easier to maintain, and we will work on migration of the build to CMake to improve Windows builds including PDAL support. Furthermore, we will start moving documentation to Markdown to make it easier to contribute to and we will add images and examples for tools and workflows which still miss them. Finally, we will automate and document maintenance processes to reduce the burden on maintainers and thus improve the project sustainability.

Note that while we have our general plan, we can't accept any earmarked donations, i.e., we can't make any promises for a specific work to be done. We do require participants to work on GRASS GIS or connections to other projects. However, we leave them the freedom to work on what they think is the best contribution to the project at that time given their skills and time available.

For the detailed agenda and individual's plans, see below.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travel and accommodation expenses for GRASS developers who volunteer their time. If you are interested in sponsoring the GRASS Community Meeting, please see our

::: '''[https://opencollective.com/osgeo/projects/grass/contribute/grass-community-meeting-prague-2023-55074 OpenCollective GRASS Community Meeting Prague 2023 Tier]'''

Any surplus at the end of the event will used for future activities of the GRASS GIS project such as the successful [[Student Grants|student mini grant program]].

This GRASS Community Meeting is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. Community meetings are important opportunities for developers to discuss, fix bugs, plan the direction for the project and work on new features. Please see below for the detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community meeting will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Meeting:

[[File:Osgeo logo.png|none|left|alt=Light and dark green logo of OSGeo saying Your Open Source Compass|Open Source Geospatial Foundation]]
* [https://www.osgeo.org/ OSGeo]: 7303 USD (approved budget contribution, [https://www.loomio.com/p/2m75BZkL/motion-to-approve-7303-to-support-grass-gis-community-meeting motion])

[[File:FOSSGIS_eV_logo.png|none|left|400px|alt=Logo of FOSSGIS e.V.|FOSSGIS e.V.]]
* [https://www.fossgis.de/ FOSSGIS e.V.]: 5000 EUR (approved budget contribution, [https://www.fossgis.de/wiki/F%C3%B6rderantr%C3%A4ge/GRASS_GIS_Community_Meeting_2023 request])

[[File:OSGeo JP logo for web.png|none|left|400px|alt=OSGeo.JP]]
* [https://www.osgeo.jp/ OSGeo Japan]: 550 USD (through Open Collective)

Individuals:
* MarWe 50 USD
* Nick Brady 50 USD
* José Ramón 50 USD
* Johannes Brauner 30 USD
* Peter Löwe 30 USD
* Evan Kay 10 USD
* Joaquin Perez Valera 5 USD
* Anonymous sponsors 2750 USD

In-kind contributions:

* Faculty of Civil Engineering Czech Technical University in Prague (FCE CTU) - space and personnel time (planning, preparation)
* North Carolina State University - personnel time (planning, preparation)
* mundialis GmbH & Co. KG - personnel time (planning, preparation)
* CONICET - personnel time (planning, preparation)

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the meeting whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Thákurova 7/2077, Prague 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from, reimbursements depending on the financial contributions provided by the community
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/cs/financni-trhy/devizovy-trh/kurzy-devizoveho-trhu/kurzy-devizoveho-trhu/ current rates]).

Please let us know your time of arrival and departure, so we can book accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

During the meeting we will work on GRASS GIS on these tasks (please add more!):

* We will update and revise the [https://github.com/qgis/QGIS/tree/master/python/plugins/grassprovider GRASS GIS Integration with QGIS] to simplify maintenance.
* Furthermore, we will migrate the compilation technology to CMake to significantly improve the Windows builds including PDAL support and become binary compatible with OSGeo4W.
* The extensive GRASS documentation will be converted from HTML to Markdown to facilitate future collaboration.
* Pictures, examples and workflows will be added to the documentation where they are still missing.
* Software maintenance processes are automated and documented to reduce the burden on maintainers and thus improve the sustainability of the project.

This means that there are tasks from both the programming and documentation areas to appeal to a wide range of interested parties.

Further details about the action items you '''find [[Talk:GRASS Community Meeting Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

(agenda is under development, but also flexible)

==== Thursday, 1 June ====

* Arrival

==== Friday, 2 June ====

* 9:00 meeting starts in the room B-868
* Lunch: 12:45 NTK
* Review the plan for the next days
* API for use in Python and in other projects (e.g., QGIS)
* Parallelizations

==== Saturday, 3 June ====

* Reducing cost of distribution on Windows
* Convert GRASS GIS documentation from HTML to Markdown and implement new documentation system (mkdocs?)
* Group photo 1
* Outdoor social evening

==== Sunday, 4 June ====

* Compilation CMake (Windows, Linux)
* Connections in general, rgrass, qgisprocess
* GRASS GIS addons overview generator for entire GitHub (and more?) based on tag "[https://github.com/topics/grass-gis-addons grass-gis-addons]"
* Group photo 2

==== Monday, 5 June ====

* Connections in general, QGIS, rgrass, qgisprocess
* Parallelizations
* grass.jupyter

==== Tuesday, 6 June ====

* Connections in general, QGIS
* Parallelizations
* grass.jupyter

==== Wednesday, 7 June ====

* Departure

=== Social events ===

==== Friday, 2 June ====

Dinner at 7pm: [https://www.uveverky.com/kontakt/ U veverku pub] [https://en.mapy.cz/s/jumomotupu map]

==== Saturday, 3 June ====

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topics'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
| Czech Republic
| June 1
| June 7
| Python: create_location ([https://github.com/OSGeo/grass/issues/1987 #1987]), Graphical Modeler improvements and single window layout integration
|
|-
|2
| Micha Silver
| Israel
| June 2
| June 6
| Addon to derive soil moisture from Sentinel 2
|
|-
|3
|[https://www.osgeo.org/member/kudrnovsky/ Helmut Kudrnovsky]
| Austria
| June 2 (18:37) by train
| June 4 (18:24) by train
| support CMake transition
|
|-
|4
|[[User:Neteler|Markus Neteler]]
| Germany
| June 2 (17:17)
| June 6 (12:43)
| translations, manual pages, ..., see [[Talk:GRASS_Community_Meeting_Prague_2023#Markus_Neteler|my list in "Discussion" page]]
|
|-
|5
|[[User:pesekon2|Ondřej Pešek]]
| Czech Republic
| June 2 (17:17)
| June 6 (12:43)
| Python 3.12-connected issues, gmodeler
|
|-
|6
| [[User:helena|Helena Mitasova]]
| United States
| June 2
| June 6
|
|
|-
|7
| [[User:wenzeslaus|Vaclav Petras]]
| United States
| June 1
| June 7
| init and other Python API topics, support CMake transition, revise connection with QGIS and other tools, funding
|
|-
|8
| [[User:Annakrat|Anna Petrasova]]
| United States
| June 1
| June 7
| parallelization documentation, grass.jupyter, R and QGIS integration
|
|-
|9
| [[User:Ctwhite|Corey White]]
| United States
| June 2 (10:55)
| June 7
| Connections with other tools, OpenPlains, JSON outputs
|
|-
|10
| [[User:MarisN|Maris Nartiss]]
| Latvia
| June 2 (14:30)
| June 6 (12:00)
| Improvements of imagery modules (push i.svm.*; i.signatures; ?)
|-
|11
| [[User:Aaronsms|Aaron Saw Min Sern]]
| Singapore
| June 1
| June 7
| Support CMake transition, r.mapcalc parallelization
|
|-
|12
| [[User:Ldesousa|Luís de Sousa]]
| The Netherlands
| June 1 (20:00)
| June 5 (20:45)
| Update r.mblend add-on; test CMake transition.
|
|-
|13
| Caitlin Haedrich
| United States
| June 1
| June 7
| grass.jupyter
|
|-
|14
| Linda Kladivová
| Czech Republic
| June 2
| June 6
| Single-Window layout issues and improvements
|
|-
|15
| Carmen Tawalika
| Germany
| June 2 (17:17)
| June 6 (12:43)
| Happy to assist with general topics like documentation + automation, in doubt something related to actinia
|
|-
|16
| Floris Vanderhaeghe
| Belgium
| June 3 (train 19:17)
| June 6 (train 8:25)
| Helping in interfacing GRASS from R (rgrass & qgisprocess packages)
|
|-
|}

If you are arriving or departing on the days of the event, please specify the time, too.

=== Via chat or hangout ===

Join our [https://app.gitter.im/#/room/#grassgis_community:gitter.im Gitter chatroom]

Gitter has a video (and backup will be Zoom).

Participating virtually:

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!'''Topics'''
!'''Times, synchronous or fully asynchronous'''
!'''Notes'''
|-
|1
|[[User:Baharmon|Brendan Harmon]]
| United States
| Update integration with QGIS
| Available 8:00 AM CST (UTC-6) onwards
|
|-
|2
|[[User:veroandreo|Veronica Andreo]]
| Argentina
| Mission and vision, interfaces with QGIS and R, sponsoring, ... [https://grasswiki.osgeo.org/wiki/Talk:GRASS_Community_Meeting_Prague_2023#Vero see discussion tab]
| available from 8:00 AM ART (UTC-3) onward
|
|-
|3
|[[User:Nobeeakon|Daniel T]]
| Mexico
|
| some availability through the days :/
|
|-
|4
|[[User:LBartoletti|Loïc Bartoletti]]
| France
| QGIS Integration, support CMake transition
|
|-
|}

==== Timing of hangout meetings ====

Vero: available from 8:00 AM ART (UTC-3) onward

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install git and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :)

== Photos ==

Also during the event :)

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS_GIS at OSGeo Virtual Community Sprint 2020]]!
* ''Is the GRASS Community Meeting just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software.
* ''Is the GRASS Community Meeting for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community meeting?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Report and press release ==

TBD: After the event :-)

We'll esp. craft a report for our sponsors.

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

GRASS Community Meeting Prague 2023

2023-05-04T08:54:27Z

⚠️Landa: /* In person */

GRASS Community Meeting Prague 2023

2023-05-02T08:31:54Z

⚠️Landa: /* In person */

GRASS Community Meeting Prague 2023

2023-05-02T08:16:27Z

⚠️Landa: /* In person */

GRASS Community Meeting Prague 2023

2023-04-30T08:04:41Z

⚠️Landa: /* Friday, 2 June */

GRASS Community Meeting Prague 2023

2023-04-30T07:56:20Z

⚠️Landa: /* Timeline */

GRASS Community Meeting Prague 2023

2023-04-06T13:49:35Z

⚠️Landa: /* In person */

GRASS Community Meeting Prague 2023

2023-03-29T09:43:48Z

⚠️Landa: /* In person */

GRASS Community Meeting Prague 2023

2023-03-29T09:42:35Z

⚠️Landa: /* Venue */

GRASS Community Meeting Prague 2023

2023-03-29T09:42:23Z

⚠️Landa: /* Venue */

GRASS Community Meeting Prague 2023

2023-03-17T14:07:02Z

⚠️Landa: /* In person */

GRASS Community Sprint Prague 2023

2023-03-17T14:05:28Z

⚠️Landa: Landa moved page GRASS Community Sprint Prague 2023 to GRASS Community Meeting Prague 2023

#REDIRECT [[GRASS Community Meeting Prague 2023]]

GRASS Community Meeting Prague 2023

2023-03-17T14:05:28Z

⚠️Landa: Landa moved page GRASS Community Sprint Prague 2023 to GRASS Community Meeting Prague 2023

GRASS Community Meeting Prague 2023

2023-03-13T19:29:02Z

⚠️Landa:

{{toc|right}}
The GRASS GIS team will organize the ''GRASS GIS Community Sprint which is a meeting where contributors, power users and developers'' from '''June 2 to June 6, 2023'''.

<gallery mode="slideshow">
Image:grass-sprint-prague.jpg|Prague 2013
Image:Grass_sprint2018_bonn_fotowall.jpg|Bonn 2018
</gallery>

== Purpose ==

GRASS GIS Community Sprint is a great occasion for folks to support the development by actively contributing to the source code, manuals or likewise. The '''community''' sprint is a get-together for GRASS project members and supporters and related [https://www.osgeo.org OSGeo] projects to make decisions and tackle larger problems. For this meeting, we welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R statistics, OGC Services and more.

For this meeting, we welcome people committed to improving the GRASS GIS and related projects. This includes developers, document writers, wish and bug reporters, translators etc.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travelling and accommodation expenses for GRASS developers with far arrival. If you are interested to sponsor the GRASS Community Sprint, please read about

:::'''sponsoring the GRASS GIS project''' at '''[https://grass.osgeo.org/contribute/sponsoring/ https://grass.osgeo.org/contribute/sponsoring/]'''

Note that it is also possible to buy a round of beer for the developers with a quick click using the Open Collective "Contribute Money" button https://opencollective.com/osgeo/projects/grass

Any surplus at the end of the event will be turned over to the GRASS GIS project.

This GRASS Community Sprint is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. The community sprint is an important opportunity for the GRASS developers to discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. Please see below for the more detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community sprint will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Sprint:

TBD

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the community sprint whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/cs/financni-trhy/devizovy-trh/kurzy-devizoveho-trhu/kurzy-devizoveho-trhu/ current rates]).

Please let us know your time of arrival and leaving, so we can book for the accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

Further details about the action items you '''find [[Talk:GRASS Community Sprint Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

Will be specified later.

==== Friday, 2 June ====

==== Saturday, 3 June ====

==== Sunday, 4 June ====

==== Monday, 5 June ====

==== Tuesday, 6 June ====

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topics'''
!width=75px|'''T-Shirt'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
|Czech Republic
| June 2
| June 6
|
| XL
|
|-
|x
| ''and you ...''
|...
|...
|...
|...
|...
|
|-
|}

=== Via chat or hangout===

Join our [https://app.gitter.im/#/room/#grassgis_community:gitter.im Gitter chatroom]

TBD: Google Meet / Zoom / ???

==== Timing of hangout meetings ====

TBD

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install subversion and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :)

== Photos ==

Also during the event :)

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS_GIS at OSGeo Virtual Community Sprint 2020]]!
* ''Is the GRASS Community Sprint just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software
* ''Is the GRASS Community Sprint for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community sprint?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Press Release ==

TBD: After the event :-)

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

GRASS Community Meeting Prague 2023

2023-03-11T10:56:51Z

⚠️Landa: /* In person */

{{toc|right}}
The GRASS GIS [[team]] will organize the '''GRASS Developer and Power User Meeting, aka 'GRASS GIS Community Sprint'''' from '''June 2 to June 6, 2023'''.

[[Image:grass-sprint-prague.jpg|640px|center]]

== Purpose ==

GRASS GIS Community Sprint is a great occasion for folks to support the development by actively contributing to the source code, manuals or likewise. The '''community''' sprint is a get-together for GRASS project members and supporters and related [https://www.osgeo.org OSGeo] projects to make decisions and tackle larger problems. For this meeting, we welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R statistics, OGC Services and more.

For this meeting, we welcome people committed to improving the GRASS GIS and related projects. This includes developers, document writers, wish and bug reporters, translators etc.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travelling and accommodation expenses for GRASS developers with far arrival. If you are interested to sponsor the GRASS Community Sprint, please read about

:::'''sponsoring the GRASS GIS project''' at '''[https://grass.osgeo.org/contribute/sponsoring/ https://grass.osgeo.org/contribute/sponsoring/]'''

Note that it is also possible to buy a round of beer for the developers with a quick click using the Open Collective "Contribute Money" button https://opencollective.com/osgeo/projects/grass

Any surplus at the end of the event will be turned over to the GRASS GIS project.

This GRASS Community Sprint is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. The community sprint is an important opportunity for the GRASS developers to discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. Please see below for the more detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community sprint will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Sprint:

TBD

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the community sprint whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/cs/financni-trhy/devizovy-trh/kurzy-devizoveho-trhu/kurzy-devizoveho-trhu/ current rates]).

Please let us know your time of arrival and leaving, so we can book for the accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

Further details about the action items you '''find [[Talk:GRASS Community Sprint Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

Will be specified later.

==== Friday, 2 June ====

==== Saturday, 3 June ====

==== Sunday, 4 June ====

==== Monday, 5 June ====

==== Tuesday, 6 June ====

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topics'''
!width=75px|'''T-Shirt'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
|Czech Republic
| June 2
| June 6
|
| XL
|
|-
|x
| ''and you ...''
|...
|...
|...
|...
|...
|
|-
|}

=== Via chat or hangout===

Join our [https://app.gitter.im/#/room/#grassgis_community:gitter.im Gitter chatroom]

TBD: Google Meet / Zoom / ???

==== Timing of hangout meetings ====

TBD

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install subversion and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :)

== Photos ==

Also during the event :)

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS_GIS at OSGeo Virtual Community Sprint 2020]]!
* ''Is the GRASS Community Sprint just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software
* ''Is the GRASS Community Sprint for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community sprint?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Press Release ==

TBD: After the event :-)

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

GRASS Community Meeting Prague 2023

2023-03-11T10:55:26Z

⚠️Landa: /* FAQ */

{{toc|right}}
The GRASS GIS [[team]] will organize the '''GRASS Developer and Power User Meeting, aka 'GRASS GIS Community Sprint'''' from '''June 2 to June 6, 2023'''.

[[Image:grass-sprint-prague.jpg|640px|center]]

== Purpose ==

GRASS GIS Community Sprint is a great occasion for folks to support the development by actively contributing to the source code, manuals or likewise. The '''community''' sprint is a get-together for GRASS project members and supporters and related [https://www.osgeo.org OSGeo] projects to make decisions and tackle larger problems. For this meeting, we welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R statistics, OGC Services and more.

For this meeting, we welcome people committed to improving the GRASS GIS and related projects. This includes developers, document writers, wish and bug reporters, translators etc.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travelling and accommodation expenses for GRASS developers with far arrival. If you are interested to sponsor the GRASS Community Sprint, please read about

:::'''sponsoring the GRASS GIS project''' at '''[https://grass.osgeo.org/contribute/sponsoring/ https://grass.osgeo.org/contribute/sponsoring/]'''

Note that it is also possible to buy a round of beer for the developers with a quick click using the Open Collective "Contribute Money" button https://opencollective.com/osgeo/projects/grass

Any surplus at the end of the event will be turned over to the GRASS GIS project.

This GRASS Community Sprint is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. The community sprint is an important opportunity for the GRASS developers to discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. Please see below for the more detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community sprint will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Sprint:

TBD

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the community sprint whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/cs/financni-trhy/devizovy-trh/kurzy-devizoveho-trhu/kurzy-devizoveho-trhu/ current rates]).

Please let us know your time of arrival and leaving, so we can book for the accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

Further details about the action items you '''find [[Talk:GRASS Community Sprint Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

Will be specified later.

==== Friday, 2 June ====

==== Saturday, 3 June ====

==== Sunday, 4 June ====

==== Monday, 5 June ====

==== Tuesday, 6 June ====

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topic'''
!width=75px|'''T-Shirt'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
|Czech Republic
| June 2
| June 6
|
| XL
|
|-
|x
| ''and you ...''
|...
|...
|...
|...
|...
|
|-
|}

=== Via chat or hangout===

Join our [https://app.gitter.im/#/room/#grassgis_community:gitter.im Gitter chatroom]

TBD: Google Meet / Zoom / ???

==== Timing of hangout meetings ====

TBD

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install subversion and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :)

== Photos ==

Also during the event :)

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS_GIS at OSGeo Virtual Community Sprint 2020]]!
* ''Is the GRASS Community Sprint just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software
* ''Is the GRASS Community Sprint for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community sprint?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Press Release ==

TBD: After the event :-)

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

GRASS Community Meeting Prague 2023

2023-03-11T10:53:32Z

⚠️Landa: /* Via chat or hangout */

{{toc|right}}
The GRASS GIS [[team]] will organize the '''GRASS Developer and Power User Meeting, aka 'GRASS GIS Community Sprint'''' from '''June 2 to June 6, 2023'''.

[[Image:grass-sprint-prague.jpg|640px|center]]

== Purpose ==

GRASS GIS Community Sprint is a great occasion for folks to support the development by actively contributing to the source code, manuals or likewise. The '''community''' sprint is a get-together for GRASS project members and supporters and related [https://www.osgeo.org OSGeo] projects to make decisions and tackle larger problems. For this meeting, we welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R statistics, OGC Services and more.

For this meeting, we welcome people committed to improving the GRASS GIS and related projects. This includes developers, document writers, wish and bug reporters, translators etc.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travelling and accommodation expenses for GRASS developers with far arrival. If you are interested to sponsor the GRASS Community Sprint, please read about

:::'''sponsoring the GRASS GIS project''' at '''[https://grass.osgeo.org/contribute/sponsoring/ https://grass.osgeo.org/contribute/sponsoring/]'''

Note that it is also possible to buy a round of beer for the developers with a quick click using the Open Collective "Contribute Money" button https://opencollective.com/osgeo/projects/grass

Any surplus at the end of the event will be turned over to the GRASS GIS project.

This GRASS Community Sprint is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. The community sprint is an important opportunity for the GRASS developers to discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. Please see below for the more detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community sprint will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Sprint:

TBD

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the community sprint whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/cs/financni-trhy/devizovy-trh/kurzy-devizoveho-trhu/kurzy-devizoveho-trhu/ current rates]).

Please let us know your time of arrival and leaving, so we can book for the accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

Further details about the action items you '''find [[Talk:GRASS Community Sprint Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

Will be specified later.

==== Friday, 2 June ====

==== Saturday, 3 June ====

==== Sunday, 4 June ====

==== Monday, 5 June ====

==== Tuesday, 6 June ====

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topic'''
!width=75px|'''T-Shirt'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
|Czech Republic
| June 2
| June 6
|
| XL
|
|-
|x
| ''and you ...''
|...
|...
|...
|...
|...
|
|-
|}

=== Via chat or hangout===

Join our [https://app.gitter.im/#/room/#grassgis_community:gitter.im Gitter chatroom]

TBD: Google Meet / Zoom / ???

==== Timing of hangout meetings ====

TBD

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install subversion and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :)

== Photos ==

Also during the event :)

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS Community Sprint Genova 2013]]!
* ''Is the GRASS Community Sprint just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software
* ''Is the GRASS Community Sprint for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community sprint?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Press Release ==

TBD: After the event :-)

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

GRASS Community Meeting Prague 2023

2023-03-11T10:52:47Z

⚠️Landa: /* Accommodation and Costs */

{{toc|right}}
The GRASS GIS [[team]] will organize the '''GRASS Developer and Power User Meeting, aka 'GRASS GIS Community Sprint'''' from '''June 2 to June 6, 2023'''.

[[Image:grass-sprint-prague.jpg|640px|center]]

== Purpose ==

GRASS GIS Community Sprint is a great occasion for folks to support the development by actively contributing to the source code, manuals or likewise. The '''community''' sprint is a get-together for GRASS project members and supporters and related [https://www.osgeo.org OSGeo] projects to make decisions and tackle larger problems. For this meeting, we welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R statistics, OGC Services and more.

For this meeting, we welcome people committed to improving the GRASS GIS and related projects. This includes developers, document writers, wish and bug reporters, translators etc.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travelling and accommodation expenses for GRASS developers with far arrival. If you are interested to sponsor the GRASS Community Sprint, please read about

:::'''sponsoring the GRASS GIS project''' at '''[https://grass.osgeo.org/contribute/sponsoring/ https://grass.osgeo.org/contribute/sponsoring/]'''

Note that it is also possible to buy a round of beer for the developers with a quick click using the Open Collective "Contribute Money" button https://opencollective.com/osgeo/projects/grass

Any surplus at the end of the event will be turned over to the GRASS GIS project.

This GRASS Community Sprint is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. The community sprint is an important opportunity for the GRASS developers to discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. Please see below for the more detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community sprint will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Sprint:

TBD

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the community sprint whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/cs/financni-trhy/devizovy-trh/kurzy-devizoveho-trhu/kurzy-devizoveho-trhu/ current rates]).

Please let us know your time of arrival and leaving, so we can book for the accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

Further details about the action items you '''find [[Talk:GRASS Community Sprint Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

Will be specified later.

==== Friday, 2 June ====

==== Saturday, 3 June ====

==== Sunday, 4 June ====

==== Monday, 5 June ====

==== Tuesday, 6 June ====

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topic'''
!width=75px|'''T-Shirt'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
|Czech Republic
| June 2
| June 6
|
| XL
|
|-
|x
| ''and you ...''
|...
|...
|...
|...
|...
|
|-
|}

=== Via chat or hangout===

[https://app.gitter.im/#/room/#grassgis_community:gitter.im Join our Gitter chatroom]

TBD: Google Meet / Zoom / ???

==== Timing of hangout meetings ====

TBD

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install subversion and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :)

== Photos ==

Also during the event :)

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS Community Sprint Genova 2013]]!
* ''Is the GRASS Community Sprint just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software
* ''Is the GRASS Community Sprint for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community sprint?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Press Release ==

TBD: After the event :-)

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

GRASS Community Meeting Prague 2023

2023-03-11T10:51:35Z

⚠️Landa:

{{toc|right}}
The GRASS GIS [[team]] will organize the '''GRASS Developer and Power User Meeting, aka 'GRASS GIS Community Sprint'''' from '''June 2 to June 6, 2023'''.

[[Image:grass-sprint-prague.jpg|640px|center]]

== Purpose ==

GRASS GIS Community Sprint is a great occasion for folks to support the development by actively contributing to the source code, manuals or likewise. The '''community''' sprint is a get-together for GRASS project members and supporters and related [https://www.osgeo.org OSGeo] projects to make decisions and tackle larger problems. For this meeting, we welcome people committed to improving the GRASS GIS project and the interfaces to QGIS, GDAL, PostGIS, R statistics, OGC Services and more.

For this meeting, we welcome people committed to improving the GRASS GIS and related projects. This includes developers, document writers, wish and bug reporters, translators etc.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travelling and accommodation expenses for GRASS developers with far arrival. If you are interested to sponsor the GRASS Community Sprint, please read about

:::'''sponsoring the GRASS GIS project''' at '''[https://grass.osgeo.org/contribute/sponsoring/ https://grass.osgeo.org/contribute/sponsoring/]'''

Note that it is also possible to buy a round of beer for the developers with a quick click using the Open Collective "Contribute Money" button https://opencollective.com/osgeo/projects/grass

Any surplus at the end of the event will be turned over to the GRASS GIS project.

This GRASS Community Sprint is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. The community sprint is an important opportunity for the GRASS developers to discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. Please see below for the more detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community sprint will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Sprint:

TBD

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the community sprint whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/en/financial_markets/foreign_exchange_market/exchange_rate_fixing/daily.jsp current rates]).

Please let us know your time of arrival and leaving, so we can book for the accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

Further details about the action items you '''find [[Talk:GRASS Community Sprint Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

Will be specified later.

==== Friday, 2 June ====

==== Saturday, 3 June ====

==== Sunday, 4 June ====

==== Monday, 5 June ====

==== Tuesday, 6 June ====

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topic'''
!width=75px|'''T-Shirt'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
|Czech Republic
| June 2
| June 6
|
| XL
|
|-
|x
| ''and you ...''
|...
|...
|...
|...
|...
|
|-
|}

=== Via chat or hangout===

[https://app.gitter.im/#/room/#grassgis_community:gitter.im Join our Gitter chatroom]

TBD: Google Meet / Zoom / ???

==== Timing of hangout meetings ====

TBD

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install subversion and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :)

== Photos ==

Also during the event :)

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS Community Sprint Genova 2013]]!
* ''Is the GRASS Community Sprint just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software
* ''Is the GRASS Community Sprint for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community sprint?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Press Release ==

TBD: After the event :-)

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

File:Grass-sprint-prague.jpg

2023-03-11T10:49:30Z

⚠️Landa:

GRASS Community Meeting Prague 2023

2023-03-11T10:49:15Z

⚠️Landa:

{{toc|right}}
The GRASS GIS [[team]] will organize the '''GRASS Developer and Power User Meeting, aka 'GRASS GIS Community Sprint'''' from '''June 2 to June 6, 2023'''.

[[Image:grass-sprint-prague.jpg|640px|center]]

== Purpose ==

GRASS GIS Community Sprint is a great occasion for folks to support the development by actively contributing to the source code, manuals or likewise. The '''community''' sprint is a get-together for GRASS project members and supporters and related [https://www.osgeo.org OSGeo] projects to make decisions and tackle larger problems. For this meeting, we welcome people committed to improving the GRASS GIS project and the interfaces to [[QGIS GRASS Cookbook|QGIS]], [[GDAL]], [[PostGIS]], [[R statistics]], OGC Services and more.

For this meeting, we welcome people committed to improving the GRASS GIS and related projects. This includes developers, document writers, wish and bug reporters, translators etc.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travelling and accommodation expenses for GRASS developers with far arrival. If you are interested to sponsor the GRASS Community Sprint, please read about

:::'''sponsoring the GRASS GIS project''' at '''[https://grass.osgeo.org/contribute/sponsoring/ https://grass.osgeo.org/contribute/sponsoring/]'''

Note that it is also possible to buy a round of beer for the developers with a quick click using the Open Collective "Contribute Money" button https://opencollective.com/osgeo/projects/grass

Any surplus at the end of the event will be turned over to the GRASS GIS project.

This GRASS Community Sprint is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. The community sprint is an important opportunity for the GRASS developers to discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. Please see below for the more detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community sprint will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Sprint:

TBD

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the community sprint whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/en/financial_markets/foreign_exchange_market/exchange_rate_fixing/daily.jsp current rates]).

Please let us know your time of arrival and leaving, so we can book for the accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

Further details about the action items you '''find [[Talk:GRASS Community Sprint Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

Will be specified later.

==== Friday, 2 June ====

==== Saturday, 3 June ====

==== Sunday, 4 June ====

==== Monday, 5 June ====

==== Tuesday, 6 June ====

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topic'''
!width=75px|'''T-Shirt'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
|Czech Republic
| June 2
| June 6
|
| XL
|
|-
|x
| ''and you ...''
|...
|...
|...
|...
|...
|
|-
|}

=== Via chat or hangout===

[https://app.gitter.im/#/room/#grassgis_community:gitter.im Join our Gitter chatroom]

TBD: Google Meet / Zoom / ???

==== Timing of hangout meetings ====

TBD

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install subversion and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :)

== Photos ==

Also during the event :)

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS Community Sprint Genova 2013]]!
* ''Is the GRASS Community Sprint just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software
* ''Is the GRASS Community Sprint for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community sprint?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Press Release ==

TBD: After the event :-)

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

GRASS Community Meeting Prague 2023

2023-03-11T10:45:02Z

⚠️Landa: first draft

{{toc|right}}
The GRASS GIS [[team]] will organize the '''GRASS Developer and Power User Meeting, aka 'GRASS GIS Community Sprint'''' from '''June 2 to June 6, 2023'''.

== Purpose ==

GRASS GIS Community Sprint is a great occasion for folks to support the development by actively contributing to the source code, manuals or likewise. The '''community''' sprint is a get-together for GRASS project members and supporters and related [https://www.osgeo.org OSGeo] projects to make decisions and tackle larger problems. For this meeting, we welcome people committed to improving the GRASS GIS project and the interfaces to [[QGIS GRASS Cookbook|QGIS]], [[GDAL]], [[PostGIS]], [[R statistics]], OGC Services and more.

For this meeting, we welcome people committed to improving the GRASS GIS and related projects. This includes developers, document writers, wish and bug reporters, translators etc.

== Sponsors ==

We welcome '''financial contributions''' to support the meeting and we are looking for sponsors to cover costs such as meals or to help reducing travelling and accommodation expenses for GRASS developers with far arrival. If you are interested to sponsor the GRASS Community Sprint, please read about

:::'''sponsoring the GRASS GIS project''' at '''[https://grass.osgeo.org/contribute/sponsoring/ https://grass.osgeo.org/contribute/sponsoring/]'''

Note that it is also possible to buy a round of beer for the developers with a quick click using the Open Collective "Contribute Money" button https://opencollective.com/osgeo/projects/grass

Any surplus at the end of the event will be turned over to the GRASS GIS project.

This GRASS Community Sprint is a great occasion for you to support the development of GRASS. With your contribution you'll enable more developers to meet. The community sprint is an important opportunity for the GRASS developers to discuss and collaboratively resolve bugs, plan the direction for the project and work on new features. Please see below for the more detailed agenda. The developers and contributors are donating their valuable time, so it would be great if in-kind funding can be made available from within the community to cover out-of-pocket expenses. All of the work that takes place at the community sprint will be directly contributed back into the GRASS project to the benefit of everyone who uses it.

=== Thanks to our sponsors ===

We are grateful for the support which we have received to organize this GRASS Community Sprint:

TBD

== Timing ==

'''When''': June 2-6, 2023

Of course you are invited to join or leave the community sprint whenever you want.

== Venue ==

[[Image:logo_cvut.jpg|130px|left]]
Department of Geomatics 
[https://www.fsv.cvut.cz/?lang=en Faculty of Civil Engineering] 
[https://www.cvut.cz/en Czech Technical University in Prague], {{wikipedia|Czech Republic}} 
Room B868 
[https://en.mapy.cz/s/debazefuse Map] 

Prague has an international [http://www.prg.aero/en/ airport] and is also reachable by train, bus or car.

== Accommodation and Costs ==

Participants should plan for the following costs:

* The participation is free of charge
* Travel to Prague, variable depending on where you come from
* Accommodation and meals (with the donated sponsorship money we will try to cover some expenses of the participants)
'''Please note''': The currency in Czech Republic is {{wikipedia|Czech crown}} (CZK, koruna, Kč). 100 Czech crowns are about 4 Euros (see [https://www.cnb.cz/en/financial_markets/foreign_exchange_market/exchange_rate_fixing/daily.jsp current rates]).

Please let us know your time of arrival and leaving, so we can book for the accommodations and organize the logistics.

Financial support: (partial) travel grants can be payed upon request thanks to our sponsors!

== Agenda - What we plan to do ==

'''Note:''' The program is generally open for your ideas. Please write an email to the [http://lists.osgeo.org/mailman/listinfo/grass-dev GRASS developer list] to discuss your contribution.

Further details about the action items you '''find [[Talk:GRASS Community Sprint Prague 2023|here]]''' and below. Topics cover non-technical, semi-technical, and technical issues.

=== Timeline ===

Will be specified later.

==== Friday, 2 June ====

==== Saturday, 3 June ====

==== Sunday, 4 June ====

==== Monday, 5 June ====

==== Tuesday, 6 June ====

== Participation ==

We are planning for an attendance of 20 people (i.e., coding places) but of course you are welcome to join us and bring new ideas with you: we'll make more places available. Please add your name here or contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>:

=== In person ===

{|class="wikitable sortable" border="2" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0; border:solid 1px #AAAAAA; border-collapse:collapse; background-color:#edf9c7; font-size:95%; empty-cells:show;"
!width=50px|'''Number'''
!width=130px|'''Participant '''
!width=100px|'''Country'''
!width=100px|'''Arrival'''
!width=100px|'''Departure'''
!'''Topic'''
!width=75px|'''T-Shirt'''
!'''Notes'''
|-
|1
|[[User:Landa|Martin Landa]]
|Czech Republic
| June 2
| June 6
|
| XL
|
|-
|x
| ''and you ...''
|...
|...
|...
|...
|...
|
|-
|}

=== Via chat or hangout===

[https://app.gitter.im/#/room/#grassgis_community:gitter.im Join our Gitter chatroom]

TBD: Google Meet / Zoom / ???

==== Timing of hangout meetings ====

TBD

=== Collaborative document scratching ===

TBD

== Individual Preparation ==

* Bring your own computer
* Bring {{wikipedia|AC adapter|power connector adapter}} if needed (Czech Republic: 230V, 50Hz, {{wikipedia|File:Euro-Flachstecker_2.jpg|Type C Europlugs}} are common and also {{wikipedia|File:French_plug_and_socket.jpg|Type E}})
* Install subversion and the compiler tools, and come with a working GRASS development environment if possible.

== Broadcast & Video ==

During the event :)

== Photos ==

Also during the event :)

== FAQ ==

* '''How was it last time?'''
** Very nice, see [[GRASS Community Sprint Genova 2013]]!
* ''Is the GRASS Community Sprint just a coding event?''
** It is mainly a coding and documentation event. It is a working session for people who are already participants in the GRASS project and/or are committed to improving the GRASS project.
** On demand we can do some presentations of current working GRASS implementation and new upcoming features to spread the idea of Open Source GIS software
* ''Is the GRASS Community Sprint for developers only?''
** No: anybody can help, with testing, checking out bugs and fixes, documentation and more.
* ''Where can I get help and more information about the community sprint?''
** Contact [[User:Landa|Martin Landa]] <tt><landa.martin at gmail.com></tt>

== Press Release ==

TBD: After the event :-)

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2023]]

GRASS-Wiki

2021-10-10T14:14:43Z

⚠️Landa: GRASS GIS 7.8.6 released

__NOTOC__
{| width="100%"
|-
| width="68%" style="vertical-align:top" |
<div style="margin:0; margin-right:10px; border:1px solid #dfdfdf; background-color:#f8f8ff;">

<div style="padding:0.3em 1em 0.7em 1em;">

[[Image:grasslogo_vector_small.png|right|link=https://grass.osgeo.org]]

=== Welcome to the GRASS GIS Users Wiki ===

{{website|documentation/general-overview|'''GRASS GIS'''}} is a [http://en.wikipedia.org/wiki/Geographic_information_system Geographic Information System] used for geospatial data management and analysis, image processing, graphics/map production, spatial modeling, and visualization.

On this Wiki, you can get and contribute to GRASS related information, documents and community provided add-ons programs. In case you wish edit here, you need to register and login first (see top right link).

For GRASS GIS at a glance, see [[core features]]. For usage examples, see the [https://grass.osgeo.org/learn/gallery/ screenshot gallery] and [[Applications]]. And also visit the [https://grass.osgeo.org main GRASS GIS website].


</div>
</div>

<div style="margin:0; margin-top:10px; margin-right:10px; border:1px solid #dfdfdf; padding:0em 1em 1em 1em; background-color:#FFE5E5;">
'''What's hot:'''
* [https://trac.osgeo.org/grass/wiki/Release/7.8.6-News '''GRASS GIS 7.8.6''' is available!] {{bullet}} [https://grass.osgeo.org/download/#g78x download] {{bullet}} [https://github.com/OSGeo/grass/issues report any problems]
* [http://trac.osgeo.org/grass/wiki/Grass7/NewFeatures List of new features in GRASS GIS 7] ([https://grass.osgeo.org/download/software/#g78x help testing])

* Try the [[Quick wxGUI tutorial]]
</div>

<div style="margin:0; margin-top:10px; margin-right:10px; border:1px solid #dfdfdf; padding:0em 1em 1em 1em; background-color:#f8f8ff;">
==== User Documentation and Support ====
* [[GRASS Help|GRASS Help and Getting Started]]
* [[GRASS Documents|In depth GRASS Documentation]]
* [[Installation Guide]] for precompiled binaries
* '''[[Faq|FAQ]] - Frequently Asked Questions'''
* [[Applications]] - use cases of GRASS in various disciplines
* [[wxGUI]] - Graphical User Interface based on wxPython
</div>

<div style="margin:0; margin-top:10px; margin-right:10px; border:1px solid #dfdfdf; padding:0em 1em 1em 1em; background-color:#f8f8ff;">

==== Community ====
* [[GRASS Community]]: Getting in touch
* [[Applications|Research applications]]: What people are doing with GRASS
* [[GRASS migration hints|Migrating to GRASS]]
* [[GRASS Blogger]]
* Get involved: [[Project jobs]]
* [https://grass.osgeo.org/wiki/Special:Recentchanges?feed=rss RSS feed] of recent changes of this Wiki
</div>

<div>Have a look at the GRASS GIS users worldwide [https://grass.osgeo.org/community GRASS GIS User Online]. If you operate a GRASS GIS installation, you are welcome to enter your user data there.
</div>

<div>''[[GRASS-Wiki:Language policy|Translate this Wiki]]''</div>


| width="38%" style="vertical-align:top" |
<div style="margin:0; border:1px solid #dfdfdf; padding:0em 1em 1em 1em; background-color:#f8f8ff;">
[[Image:osgeo_logo.png|center|220px|link=http://www.osgeo.org]]
<center>[http://www.osgeo.org OSGeo] Foundation Project</center>
</div>

<div style="margin:0; margin-top:10px; border:1px solid #dfdfdf; padding:1em 1em 1em 1em; background-color:#f8f8ff;">
[[Image:Btn_donate_SM.gif|center|link=https://grass.osgeo.org/donations/]]
</div>

<div style="margin:0; margin-top:10px; border:1px solid #dfdfdf; padding: 0em 1em 1em 1em; background-color:#f8f8ff;">
* [https://grass.osgeo.org/screenshots GRASS Screenshots]
* [https://github.com/OSGeo/grass/ GitHub] Source Code Repository
* [https://grass.osgeo.org/support/mailing-lists Mailing lists] and [[IRC]]
* [https://trac.osgeo.org/grass/ Report errors or wishes]
* [https://github.com/OSGeo/grass/blob/master/COPYING Licensed under GNU GPL]
</div>

<div style="margin:0; margin-top:10px; border:1px solid #dfdfdf; padding:0em 1em 1em 1em; background-color:#f8f8ff;">

==== Download ====
* [https://grass.osgeo.org/download Source code and binaries]
* '''[[AddOns]]'''
* [[Promotional material]]
* [[Sample datasets]]
* [[Global datasets]]
</div>

<div style="margin:0; margin-top:10px; border:1px solid #dfdfdf; padding:0em 1em 1em 1em; background-color:#f8f8ff;">

==== Development ====
* [[Compile and Install]] of Source Code
* [[Development|GRASS Development]] intro
* [http://trac.osgeo.org/grass/wiki GRASS-trac]: the development Wiki, bugtracker, source code browser
* [[Release Roadmap]]
* [[GRASS 7 ideas collection]]
* [[GRASS SoC Ideas|Google Summer of Code ideas collection]]
* [http://trac.osgeo.org/grass/wiki/HowToContribute How to contribute to GRASS development] (getting write access and such)
</div>


|}

Compile and Install

2020-05-17T20:48:36Z

⚠️Landa: /* Generic procedure for Debian-based distributions (Ubuntu, ...) */

'''Disclaimer''': This page explains how to turn the GRASS GIS source code into an installable binary package ("compilation") for different operating systems. If you just want to get ready-to-use binaries, go [https://grass.osgeo.org/download/ here], otherwise read on...

== How to do compilation and installation of GRASS GIS? ==

Here we explain the procedure to compile GRASS from GitHub, but it also applies to official GRASS 7 releases.

''For installation of precompiled binary packages, see the main [[Installation Guide]].''

For detailed information on compilation, please see the [https://github.com/OSGeo/grass/blob/master/INSTALL INSTALL] file in the source code.

=== Prerequisites ===

==== Extra libraries ====
GRASS GIS needs at least two extra libraries: PROJ and GDAL/OGR. It is recommended to download them as ready-to-use packages for your software platform (Linux distribution, Windows, Mac...).

Other libraries needed to run GRASS are listed on the [http://htmlpreview.github.io/?https://github.com/OSGeo/grass/blob/master/REQUIREMENTS.html requirements page].

To compile, you will also need the respective "-devel" packages; see below for details.

==== Download GRASS GIS source code ====

First, [https://grass.osgeo.org/download/software/sources/ download the GRASS GIS source code].

=== Generic Compilation and installation procedure ===

* It is wise that compilation processes are carried out as a normal user: If you want to get the source code in a place where you do not have write permissions (e.g. in /usr/local/src/) just follow this:
cd /usr/local/src/
su -c 'mkdir grass7'
su -c 'chown yourlogin:yourgroup grass7'

Otherwise if you have permissions just continue as a normal user:
mkdir $HOME/src
cd $HOME/src/
git clone https://github.com/OSGeo/grass.git grass_master

* run configure with parameters to adapt the compile process to your own system. To see what options can be passed to it, run:
./configure --help | less


It may (!) look like this:

./configure \
--with-cxx \
--with-sqlite \
--with-python \
--with-geos \
--with-gdal=/usr/bin/gdal-config \
--with-cairo --with-cairo-ldflags=-lfontconfig \
--with-freetype \
--with-freetype-includes=/usr/include/freetype2 \
--with-proj --with-proj-share=/usr/share/proj

You may have to explicitly state the path for certain packages (i.e., gdal). The Unix 'locate' command will come in handy for finding the path of the package you need (you may have to run locate as root ex: sudo locate gdal-config).

Please note that the paths mentioned may widely vary due to the distribution used.
See [[Compile_and_Install#Platform_Specific_Notes|Platform Specific Notes]] below.

Depending on your needs it may be a good idea to include debugging hooks.
: See [[GRASS_Debugging#Compile_Time_Setup]].
CFLAGS="-ggdb -Wall -Werror-implicit-function-declaration" ./configure ...

At the end of configuration process you should get report not much different from this:

GRASS is now configured for: x86_64-pc-linux-gnu

Source directory: /home/user/software/grass_master
Build directory: /home/user/software/grass_master
Installation directory: ${prefix}/grass79
Startup script in directory:${exec_prefix}/bin
C compiler: gcc -O2 -march=native -std=gnu99 -fexceptions -fstack-protector -m64 -fdiagnostics-color
C++ compiler: c++ -g -Wall
Building shared libraries: yes
OpenGL platform: X11

MacOSX application: no
MacOSX architectures:
MacOSX SDK:

BLAS support: yes
BZIP2 support: no
C++ support: yes
Cairo support: yes
DWG support: no
FFTW support: yes
FreeType support: yes
GDAL support: yes
GEOS support: yes
[...]

* Let's compile it (takes a little while...)!
make -j2
* At the end, you should get report not much different from this:
----------------------------------------------------------------------
Following modules are missing the 'description.html' file in src code:
----------------------------------------------------------------------
GRASS GIS compilation log
-------------------------
Started compilation: Mon 19 Aug 2019 10:47:57 PM CEST
--
Errors in:
No errors detected.
--
Finished compilation: Mon 19 Aug 2019 10:55:12 PM CEST
(In case of errors please change into the directory with error and run 'make')

* If there is any error, change directory to directory with error and run "make" again. Report occurring bug to GRASS mailing list
* Once the installation process is finished, you're ready to install GRASS system wide.
su -c 'make install'
* enjoy GRASS:
grass79

=== What else? ===

If you want to use [http://www.qgis.org QGIS], then also compile the GRASS-GDAL/OGR plugin. This is also useful to access your GRASS-data
from other application using GDAL/OGR like [http://thuban.intevation.de thuban].
* [[Compile and install GRASS and QGIS with GDAL/OGR Plugin]] (enables QGIS to read GRASS data directly)

=== Compile and install GDAL-GRASS plugin ===

* See [[Compile and install GDAL-GRASS plugin]]

=== Platform Specific Notes ===

==== Linux ====

Linux comes in various flavours, i.e. distributions.

===== Distribution related packaging =====

* Arch Linux: https://github.com/czka/AUR-grass7
* Centos: https://src.fedoraproject.org/rpms/grass
* Debian: https://trac.osgeo.org/grass/wiki/DebianUbuntuPackaging
* EPEL: https://src.fedoraproject.org/rpms/grass
* Fedora: https://src.fedoraproject.org/rpms/grass
* Ubuntu: https://trac.osgeo.org/grass/wiki/DebianUbuntuPackaging

===== Generic procedure for Debian-based distributions (Ubuntu, ...) =====

WORK IN PROGRESS

1. Install official GRASS package

sudo apt install grass grass-dev

2. Enable source code download

# do backup first
sudo cp /etc/apt/sources.list /etc/apt/sources.list.orig
sudo sed -i '/^#\sdeb-src /s/^# *//' /etc/apt/sources.list

3. Install GRASS dependencies

sudo apt build-dep grass

4. Download GRASS source code

git clone https://github.com/osgeo/grass

5. Compile GRASS from source code

cd grass

Configure:

grass --config build | sh

Optionally install missing dependecies (can happen when official GRASS package is not compatible with GRASS master), eg.

sudo apt install libzstd-dev

Compile:

make -j2

6. Run locally or install

./bin.x86_64-pc-linux-gnu/grass79 --version

or

sudo make install
grass79 --version

===== Debian =====

* Official [http://wiki.debian.org/DebianGis DebianGIS] packaging control files, available on git server:
git://git.debian.org/git/pkg-grass/grass.git

http://anonscm.debian.org/cgit/pkg-grass/grass.git/

====== GRASS 6.1 on Debian Sarge ======

* [http://hamish.bowman.googlepages.com/debiangisfiles#compile Compiling GRASS 6.1-CVS on Debian/OldStable (aka 3.1, Sarge)]

====== GRASS 6.4 on Debian Lenny ======

Install needed packages:
apt-get install flex bison libreadline-dev libncurses5-dev lesstif2-dev debhelper dpatch libtiff4-dev \
tcl-dev tk-dev libfftw3-dev libxmu-dev libfreetype6-dev autoconf2.13 autotools-dev doxygen \
libmysqlclient15-dev graphviz libsqlite3-dev python-wxgtk2.8 libcairo2-dev libwxgtk2.8-dev \
python-dev libgdal1-dev libgdal1-1.5.0 libproj-dev libproj0 proj-bin proj-data mysql

# Important: avoid using CFLAGS="... -Werror-implicit-function-declaration" (also on later Debian versions), see {{trac|1684}}

Configure:
./configure \
--with-cxx \
--with-sqlite \
--with-postgres --with-postgres-includes=/usr/include/postgresql \
--with-mysql --with-mysql-includes=/usr/include/mysql --with-mysql-libs=/usr/lib/mysql \
--with-odbc \
--with-cairo \
--with-proj-share=/usr/share/proj \
--with-tcltk-includes=/usr/include/tcl8.4/ \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-motif --with-fftw --with-nls --with-python \
--with-x --x-libraries=/usr/lib/x86_64-linux-gnu

Compile:
make

Install:
sudo make install

====== GRASS 6.4 on Debian Jessie ======

Install needed packages:
apt-get install flex bison debhelper dpatch autoconf2.13 autotools-dev \
python-dev g++ gcc gettext graphviz libcairo2-dev libfftw3-dev tcl-dev tk-dev \
libfreetype6-dev libgdal1h libgdal1-dev libglu1-mesa-dev libglw1-mesa-dev \
libncurses5-dev libreadline-dev libsqlite3-dev libtiff5-dev \
libwxgtk3.0-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
libproj-dev proj-bin proj-data python-numpy python-wxgtk3.0 subversion wx-common zlib1g-dev \
netcdf-bin libnetcdf-dev libatlas-dev libgegl-dev doxygen postgresql mysql-server \
libgeotiff-dev libblas-dev libgeotiff-epsg libxmu-dev libxt-dev libx11-dev

# Important: avoid using CFLAGS="... -Werror-implicit-function-declaration" (also on later Debian versions), see {{trac|1684}}

Configure:
./configure \
--with-cxx \
--with-sqlite \
--with-postgres \
--with-odbc \
--with-cairo \
--with-geos \
--with-proj-share=/usr/share/proj \
--with-tcltk-includes=/usr/include/tcl8.6/ \
--with-mysql --with-mysql-includes=/usr/include/mysql --with-mysql-libs=/usr/lib/mysql \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-motif \
--with-fftw \
--with-nls \
--with-postgres-includes=/usr/include/postgresql \
--with-python \
--with-x --x-libraries=/usr/lib/x86_64-linux-gnu

Compile:
make

Install:
sudo make install

====== GRASS 7 on Debian Squeeze ======

Install needed packages:
apt-get install flex bison debhelper dpatch autoconf2.13 autotools-dev python-dev \
g++ gcc gettext graphviz libcairo2-dev libfftw3-dev libfreetype6-dev \
libgdal1 libgdal1-dev libglu1-mesa-dev libglw1-mesa-dev \
libncurses5-dev libproj-dev libreadline-dev libsqlite3-dev libtiff4-dev \
libwxgtk2.8-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
proj-bin proj-data python-numpy python-wxgtk2.8 subversion wx-common zlib1g-dev

Download source code:

svn checkout https://svn.osgeo.org/grass/grass/trunk grass_trunk

Configure:

cd grass_trunk/
CFLAGS="-Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused" \
CXXFLAGS="-Wall" \
./configure --prefix=/usr/local \
--with-gdal --with-proj --with-proj-share=/usr/share \
--with-glw --with-nls --with-readline \
--without-tcltk \
--with-cxx \
--enable-largefile \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-sqlite \
--with-cairo --with-python=/usr/bin/python2.6-config --with-wxwidgets \
--with-geos --with-pthread

Compile:
make

Install:
sudo make install # installs as /usr/local/bin/grass72

====== GRASS 7 on Debian Wheezy ======

Install needed packages:

# note: cmake and libboost-all-dev only needed for optional libLAS
sudo apt-get install cmake libboost-all-dev

sudo apt-get install flex bison debhelper dpatch autoconf2.13 autotools-dev \
python-dev g++ gcc gettext graphviz libcairo2-dev libfftw3-dev libfreetype6-dev \
libgdal1 libgdal1-dev libglu1-mesa-dev libglw1-mesa-dev libncurses5-dev libproj-dev \
libreadline-dev libtiff4-dev libwxgtk2.8-dev libxmu-dev libxmu-headers \
libxt-dev mesa-common-dev proj-bin proj-data python-numpy python-wxgtk2.8 subversion wx-common \
zlib1g-dev netcdf-bin libatlas-dev libgegl-dev opencl-headers ocl-icd-libopencl1 \
libsqlite3-dev postgresql python-sphinx python-gdal

Download and Install libLAS
wget http://download.osgeo.org/liblas/libLAS-1.7.0.tar.gz
tar -zxvf libLAS-1.7.0.tar.gz
cd libLAS-1.7.0/
mkdir makefiles
cd makefiles
cmake -G "Unix Makefiles" ../
make
sudo make install
sudo ldconfig
cd ../..

Download of GRASS GIS 7 source code:
wget http://grass.osgeo.org/grass78/source/grass-7.8.0.tar.gz
tar -zxvf grass-7.8.0.tar.gz

Configure:
cd grass-7.0.0
CFLAGS="-g -Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused" CXXFLAGS="-g -Wall" \
./configure \
--prefix=/usr/local \
--with-gdal \
--with-proj --with-proj-share=/usr/share \
--with-glw --with-nls --with-readline \
--with-cxx --enable-largefile \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-sqlite --with-cairo --with-python=/usr/bin/python-config \
--with-wxwidgets --with-geos --with-blas \
--with-lapack-includes=/usr/lib/lapack --with-liblas=yes \
--with-netcdf=/usr/bin/nc-config --with-odbc=yes \
--with-openmp=yes --with-pthread=yes --with-postgres=yes \
--with-postgres-includes=/usr/include/postgresql \
--with-postgres-libs=/usr/lib/postgresql

# --with-mysql=yes --with-mysql-includes=/usr/include/mysql \
# --with-mysql-libs=/usr/lib/mysql \

GRASS GIS 7 is now configured (example):

Source directory: /home/user/grass-7.0.0
Build directory: /home/user/grass-7.0.0
Installation directory: ${prefix}/grass-7.0.0
Startup script in directory:${exec_prefix}/bin
C compiler: gcc -g -Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused
C++ compiler: c++ -g -Wall
Building shared libraries: yes
OpenGL platform: X11
MacOSX application: no
MacOSX architectures:
MacOSX SDK:
BLAS support: yes
C++ support: yes
Cairo support: yes
DWG support: no
FFTW support: yes
FreeType support: yes
GDAL support: yes
GEOS support: yes
LAPACK support: no
Large File support (LFS): yes
libLAS support: yes
MySQL support: no
NetCDF support: yes
NLS support: yes
ODBC support: yes
OGR support: yes
OpenCL support: no
OpenGL support: yes
OpenMP support: yes
PNG support: yes
POSIX thread support: yes
PostgreSQL support: yes
Readline support: yes
Regex support: yes
SQLite support: yes
TIFF support: yes
wxWidgets support: yes
X11 support: no

Compile:
make -j2

Install:
sudo make install # installs as /usr/local/bin/grass70

Launch:
grass70

====== GRASS 7 on Debian Jessie ======

Install needed packages:
sudo apt-get install cmake libboost-all-dev flex bison debhelper dpatch autoconf2.13 \
autotools-dev python-dev g++ gcc gettext graphviz libcairo2-dev libfftw3-dev \
libfreetype6-dev libgdal1h libgdal1-dev libglu1-mesa-dev libglw1-mesa-dev \
libncurses5-dev libproj-dev libreadline-dev libsqlite3-dev libtiff5-dev \
libwxgtk3.0-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
proj-bin proj-data python-numpy python-wxgtk3.0 subversion wx-common zlib1g-dev \
netcdf-bin libnetcdf-dev libgegl-dev doxygen python-sphinx \
postgresql libgeotiff-dev libblas-dev mysql-server \
libatlas-dev liblapack3gf liblapack-dev
# opencl-headers ocl-icd-libopencl1 liblas-bin liblas-c-dev python-gdal

Download and compile libLAS (or simply install 'liblas-c-dev ', see above):
wget http://download.osgeo.org/liblas/libLAS-1.8.0.tar.bz2
tar xjf libLAS-1.8.0.tar.bz2
mkdir libLAS-1.8.0/makefiles
cd libLAS-1.8.0/makefiles
cmake -G "Unix Makefiles" ../
make
sudo make install

Download and compile GRASS 7:
# (check there for later version)
wget http://grass.osgeo.org/grass74/source/grass-7.4.0.tar.gz
tar xzfv grass-7.4.0.tar.gz
cd grass-7.4.0
CFLAGS="-g -Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused" \
CXXFLAGS="-g -Wall" \
./configure \
--prefix=/usr/local \
--with-gdal --with-proj --with-proj-share=/usr/share \
--with-glw --with-nls --with-readline \
--with-cxx --enable-largefile \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-sqlite --with-cairo --with-python=/usr/bin/python-config \
--with-wxwidgets --with-geos \
--with-blas --with-blas-includes=/usr/include/atlas/ \
--with-lapack --with-lapack-includes=/usr/include/atlas/ \
--with-netcdf=/usr/bin/nc-config --with-odbc=yes \
--with-openmp=yes --with-pthread=no --with-postgres=yes \
--with-postgres-includes=/usr/include/postgresql \
--with-postgres-libs=/usr/lib/postgresql \
--with-mysql=yes --with-mysql-includes=/usr/include/mysql \
--with-mysql-libs=/usr/lib/mysql
make -j2

Install:
sudo make install # installs as /usr/local/bin/grass74

====== GRASS 7 on Debian Stretch ======
(Updated from above with package changes required for Debian Stretch)

Install needed packages for GRASS 7.2 - 7.6:
apt-get install cmake libboost-all-dev flex bison debhelper dpatch autoconf2.13 autotools-dev \
python-dev g++ gcc gettext graphviz libcairo2-dev libfftw3-dev libfreetype6-dev libgdal20 \
libgdal-dev libglu1-mesa-dev libglw1-mesa-dev libncurses5-dev libproj-dev libreadline-dev \
libsqlite3-dev libtiff5-dev libwxgtk3.0-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
proj-bin proj-data python-numpy python-wxgtk3.0 python-wxtools wx-common zlib1g-dev netcdf-bin \
libnetcdf-dev libgegl-dev doxygen python-sphinx postgresql libgeotiff-dev libblas-dev \
mariadb-server libatlas-dev liblapack3 liblapack-dev opencl-headers ocl-icd-libopencl1 \
subversion liblas-bin liblas-c-dev python-gdal libpdal-dev libpdal-plugin-python pdal

Install needed packages for GRASS 7.8+ (Python 3 support!):
apt-get install cmake libboost-all-dev flex bison debhelper dpatch autoconf2.13 autotools-dev \
g++ gcc gettext graphviz libcairo2-dev libfftw3-dev libfreetype6-dev libgdal20 python3-dev \
libgdal-dev libglu1-mesa-dev libglw1-mesa-dev libproj-dev libreadline-dev libgeos-c1v5 \
libsqlite3-dev libtiff5-dev libwxgtk3.0-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
proj-bin proj-data python3-numpy python3-six wx-common zlib1g-dev netcdf-bin \
libnetcdf-dev libgegl-dev doxygen python3-sphinx postgresql libgeotiff-dev libblas-dev \
libatlas-dev liblapack3 liblapack-dev opencl-headers ocl-icd-libopencl1 \
subversion liblas-bin liblas-c-dev python3-gdal libpdal-dev libpdal-plugin-python pdal

# ? python3-wxgtk4.0 libmariadb

Download and unpack source code or fetch from GitHub: https://github.com/OSGeo/grass

Configuration:

CFLAGS="-Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused" \
CXXFLAGS="-Wall" \
./configure \
--prefix=/usr/local \
--with-gdal --with-proj --with-proj-share=/usr/share \
--with-glw --with-nls --with-readline \
--with-cxx --enable-largefile \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-sqlite --with-cairo --with-python=/usr/bin/python-config \
--with-wxwidgets --with-geos \
--with-blas --with-blas-includes=/usr/include/atlas/ \
--with-lapack --with-lapack-includes=/usr/include/atlas/ \
--with-netcdf=/usr/bin/nc-config --with-odbc=yes \
--with-openmp=yes --with-pthread=no --with-postgres=yes \
--with-postgres-includes=/usr/include/postgresql \
--with-postgres-libs=/usr/lib/postgresql \
--with-mysql=yes --with-mysql-includes=/usr/include/mysql

Compile:

make -j2

Install:

make install

====== GRASS 7 on Debian Buster ======

-- To be updated --

Install needed packages for GRASS 7.8+ (Python 3 support!):
apt-get install cmake libboost-all-dev flex bison debhelper dpatch autoconf2.13 autotools-dev \
g++ gcc gettext graphviz libcairo2-dev libfftw3-dev libfreetype6-dev libgdal20 python3-dev \
libgdal-dev libglu1-mesa-dev libglw1-mesa-dev libproj-dev libreadline-dev libgeos-c1v5 \
libsqlite3-dev libtiff5-dev libwxgtk3.0-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
proj-bin proj-data python3-numpy python3-six wx-common zlib1g-dev netcdf-bin \
libnetcdf-dev libgegl-dev doxygen python3-sphinx postgresql libgeotiff-dev libblas-dev \
liblapack3 liblapack-dev opencl-headers ocl-icd-libopencl1 \
subversion liblas-bin liblas-c-dev python3-gdal libpdal-dev libpdal-plugin-python pdal \
python3-wxgtk4.0 default-libmysqlclient-dev

Download and unpack source code or fetch from GitHub: https://github.com/OSGeo/grass

Configuration:

CFLAGS="-Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused" \
CXXFLAGS="-Wall" \
./configure \
--prefix=/usr/local \
--with-gdal --with-proj --with-proj-share=/usr/share \
--with-glw --with-nls --with-readline \
--with-cxx --enable-largefile \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-sqlite --with-cairo --with-python=/usr/bin/python-config \
--with-wxwidgets --with-geos \
--with-blas --with-blas-includes=/usr/include/atlas/ \
--with-lapack --with-lapack-includes=/usr/include/atlas/ \
--with-netcdf=/usr/bin/nc-config --with-odbc=yes \
--with-openmp=yes --with-pthread=no --with-postgres=yes \
--with-postgres-includes=/usr/include/postgresql \
--with-postgres-libs=/usr/lib/postgresql \
--with-mysql=yes --with-mysql-includes=/usr/include/mysql

Compile:

make -j2

Install:

make install

===== Ubuntu =====

There is a dedicated page on how to [[Compile_and_Install_Ubuntu | Compile the GRASS GIS source code & install it in Ubuntu]].

===== Linux Mint =====

The [[Compile_and_Install_Ubuntu | detailed compilation guide for Ubuntu]] may just work. Here is a short guide for Mint:
<source lang="bash">
# installation of required libraries and compile tools
sudo apt-get install\
build-essential flex make bison gcc libgcc1 g++ cmake ccache \
python python-dev python-opengl python-wxversion python-wxtools python-wxgtk3.0 python-dateutil \
libgsl-dev python-numpy wx3.0-headers wx-common libwxgtk3.0-dev libwxbase3.0-dev \
libncurses5-dev zlib1g-dev gettext libtiff5-dev libpnglite-dev libcairo2 libcairo2-dev \
sqlite3 libsqlite3-dev libpq-dev libreadline6 libreadline6-dev libfreetype6-dev \
libfftw3-3 libfftw3-dev libboost-thread-dev libboost-program-options-dev \
liblas-c-dev resolvconf libjasper-dev subversion libav-tools libavutil-dev \
ffmpeg2theora libffmpegthumbnailer-dev libavcodec-dev libxmu-dev libavformat-dev \
libswscale-dev checkinstall libglu1-mesa-dev libxmu-dev ghostscript
</source>

Next steps:
* download [https://grass.osgeo.org/download/software/sources/ GRASS GIS source code] (e.g. take the "Weekly 7.x-svn snapshot")
* unpack source code, change into the source code directory

<source lang="bash">
# now "configure" stop to prepare for compilation
CFLAGS="-Wall" ./configure \
--with-cxx --with-gdal \
--with-proj --with-proj-share=/usr/share/proj/ \
--with-geos --without-postgres \
--with-nls --with-opengl-includes=/usr/include/GL/ \
--with-fftw --with-freetype \
--with-freetype-includes=/usr/include/freetype2 --with-sqlite \
--with-python=/usr/bin/python2.7-config --with-wx=/usr/bin/wx-config \
--with-wxwidgets --with-cairo --enable-largefile

# compile GRASS GIS
make -j2

# install compiled GRASS GIS on system
sudo make install
</source>

===== Mandriva =====

Installation of dependencies (urpmi will ask you a few more):

'''Mandriva 2009:''' (take out the '64' everywhere if you are on 32bit)
# as root
urpmi flex bison zlib-devel tiff-devel png-devel tcl-devel tk-devel sqlite3-devel \
mesagl1-devel mesaglu1-devel lib64xmu6-devel gcc-c++ gettext \
lib64wxgtk2.8 lib64wxgtk2.8-devel lib64wxgtkgl2.8 wxgtk2.8 \
lib64wxPythonGTK2.8 lib64wxPythonGTK2.8-devel wxPythonGTK wxPythonGTK-wxversion
exit

'''Mandriva 2010:''' (take out the '64' everywhere if you are on 32bit) - see also [http://svn.mandriva.com/cgi-bin/viewvc.cgi/packages/cooker/grass/current/SPECS/ SPEC] file
# as root
# installation of PROJ and GDAL
urpmi proj proj-devel gdal gdal-devel gcc-gfortran lib64openssl1.0.0 \
lib64openssl1.0.0-devel postgresql8.4-devel lib64pq8.4

# installation of compilation environment
urpmi flex bison zlib-devel tiff-devel png-devel tcl-devel tk-devel sqlite3-devel \
lib64mesagl1-devel lib64mesaglu1-devel lib64xmu6-devel gcc-c++ gettext \
lib64wxgtk2.8 lib64wxgtk2.8-devel lib64wxgtkgl2.8 wxgtk2.8 \
lib64wxPythonGTK2.8 lib64wxPythonGTK2.8-devel wxPythonGTK wxPythonGTK-wxversion
exit

Then, to configure GRASS, run (64 bit stuff optional of course):
# as user
./configure \
--enable-64bit --with-libs=/usr/lib64 \
--with-cxx \
--with-gdal=/usr/local/bin/gdal-config \
--with-sqlite \
--with-nls \
--with-python \
--with-wxwidgets=/usr/lib/wxPython/bin/wx-config \
--with-fftw \
--with-ffmpeg --with-ffmpeg-includes="/usr/include/libav* /usr/include/libpostproc /usr/include/libswscale" \
--with-motif \
--with-mysql --with-mysql-includes=/usr/include/mysql --with-mysql-libs=/usr/lib64 \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--enable-largefile

# compilation (use -j2 ior -j4 parameter on multi-core CPUs to accelerate):
make

Installation:
su
# this will install into /usr/local/
make install
exit

===== Enterprise Linux =====

Enterprise Linux (EL) and derivatives (that is, Red Hat Enterprise Linux, CentOS and Scientific Linux) is a popular and robust platform for servers and computing-heavy workstations, and is therefore a good fit for GIS specific requirements.

See: http://wiki.osgeo.org/wiki/Enterprise_Linux_GIS

===== Scientific Linux =====

See Centos

===== CentOS =====

You first need to add the EPEL repository for PROJ.4 and GDAL, see [https://fedoraproject.org/wiki/EPEL/FAQ#How_can_I_install_the_packages_from_the_EPEL_software_repository.3F here]

<strike>
Preparation '''Centos 5''' (old):
yum install epel-release

# Note: CentOS 5 comes with Python 2.4 which lacks python-config, hence two extra tweaks are needed.
yum install flex bison zlib-devel tcl-devel tk-devel gcc-c++ gettext \
libtiff-devel libpng-devel sqlite-devel \
mesa-libGL-devel mesa-libGLU-devel mesa-libGLw-devel \
mesa-libOSMesa-devel libXmu-devel python-devel gtk2-devel\
ncurses-devel postgresql-devel make
</strike>

Preparation '''Centos 6''' | '''Scientific Linux 6''':
yum install epel-release

yum install flex bison make zlib-devel gcc-c++ gettext \
sqlite-devel mesa-libGL-devel mesa-libGLU-devel \
libXmu-devel libX11-devel fftw-devel libtiff-devel \
lesstif-devel python-devel numpy wxPython wxGTK-devel \
proj proj-devel proj-epsg proj-nad libxml2 gdal gdal-devel geos geos-devel \
python-dateutil python-imaging python-matplotlib python-argparse
# only GRASS GIS 6: install also tcl-devel tk-devel

Preparation '''Centos 7''' | '''Scientific Linux 7''':
yum install epel-release

yum install flex bison make zlib-devel gcc-c++ gettext \
sqlite-devel mesa-libGL-devel mesa-libGLU-devel \
libXmu-devel libX11-devel fftw-devel libtiff-devel \
lesstif-devel python-devel numpy wxPython wxGTK-devel \
proj proj-devel proj-epsg proj-nad libxml2 gdal gdal-devel geos geos-devel \
netcdf netcdf-devel blas-devel lapack-devel atlas-devel \
python-dateutil python-imaging python-matplotlib python-sphinx \
doxygen subversion

Preparation '''Centos 8''' | '''Scientific Linux 8''':
dnf install epel-release

Note, GDAL isn't yet in EPEL8, see https://bugzilla.redhat.com/show_bug.cgi?id=1741567
dnf install flex bison make zlib-devel gcc-c++ gettext \
sqlite-devel mesa-libGL-devel mesa-libGLU-devel \
libXmu-devel libX11-devel fftw-devel libtiff-devel \
python3-devel python3-numpy wxGTK3-devel \
proj proj-devel proj-datumgrid libxml2 \
geos geos-devel \
netcdf netcdf-devel atlas-devel \
python3-dateutil python3-imaging python3-matplotlib \
subversion --skip-broken

GDAL is available on Fedora COPR here: https://copr.fedorainfracloud.org/coprs/neteler/GDAL/builds/
dnf copr enable neteler/GDAL
dnf update
dnf install gdal gdal-libs gdal-python-tools python3-gdal gdal-devel

'''GRASS GIS 7 compilation and installation'''

[https://grass.osgeo.org/grass-stable/source/snapshot/ Download source code] (e.g., --> "Download latest 7.8 code)" and configure GRASS 7 (suggestion: save this as script):

./configure \
--with-cxx \
--enable-largefile \
--with-proj --with-proj-share=/usr/share/proj \
--with-gdal=/usr/bin/gdal-config \
--with-sqlite \
--with-python \
--with-cairo --with-cairo-ldflags=-lfontconfig \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-wxwidgets=/usr/bin/wx-config \
--with-openmp \
--with-blas --with-blas-includes=/usr/include/atlas-x86_64-base/ \
--with-lapack --with-lapack-includes=/usr/include/atlas-x86_64-base/ \
--with-fftw \
--with-geos \
--with-netcdf \
--without-ffmpeg \
--without-mysql \
--without-postgres \
--without-odbc \
--without-fftw

Compile:
make
or on a multicore system (number depends of available cores):
make -j4

For a system wide installation, run as root user:
make install
OR simply run it directly from the source code directory (substitute ARCH with i686 or x86_64):

bin.$ARCH/grass78 -gui

In this case, for convenience, add it to the search path:
mkdir $HOME/bin
cd $HOME/bin
# example:
ln -s $HOME/software/grass78_release/bin.i686-pc-linux-gnu/grass78 .

Now use it subsequently with
grass78 -gui

'''Installation grass78 on a HPC system with '''Centos 7''' and no root privileges:'''
This assumes that python3, fftw, proj, gdal and geos are available on the HPC system, either as modules or as installed software.

Download and prepare some dependencies (freetypes and zstd)
mkdir -p $HOME/grass/freetypes
cd $HOME/grass/freetypes
wget path/to/freetype-2.9.1.tar.gz
tar -xf freetype-2.9.1.tar.gz

mkdir $HOME/grass/zstd
cd mkdir $HOME/grass/zstd
wget path/to/v1.4.4/zstd-1.4.4.tar.gz
tar -xf zstd-1.4.4.tar.gz
make install PREFIX=./

Add the ZSTD path to your LD_LIBRARY_PATH

tee -a $HOME/.bashrc > /dev/null << EOT
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$HOME/grass/zstd/zstd-1.4.4/lib
EOT

The configure command could look like this
./configure \
-prefix=$HOME/grass \
--enable-64bit --with-fftw-includes=/path/to/fftw/include/ \
--with-fftw-libs=/path/to/fftw/lib/ \
--with-freetype-includes=$HOME/grass/freetypes/freetype-2.9.1/include/ \
--with-netcdf --with-geos --with-blas --with-lapack --with-postgres \
--with-zstd-includes=$HOME/grass/zstd/zstd-1.4.4/lib/ \
--with-zstd-libs=$HOME/grass/zstd/zstd-1.4.4/lib/ \
--with-gdal=/path/to/gdal-config # This could be the path to a gdal version compiled from source

Finally usual:
make; make install

===== Gentoo =====

./configure \
--with-freetype=yes --with-freetype-includes="/usr/include/freetype2/"

See also http://packages.gentoo.org/package/sci-geosciences/grass

===== Funtoo =====

{{MovedToTrac|FuntooLinux}}

===== Fedora =====

====== GRASS GIS 6 on Fedora ======

'''Preparation''' for the compilation of GRASS GIS 6 source code (F16-F21):

yum install proj-devel gdal-devel sqlite-devel ffmpeg-devel mesa-libGL-devel \
mesa-libGLU-devel libXmu-devel libX11-devel tcl-devel tk-devel geos \
fftw-devel libtiff-devel lesstif-devel python-devel numpy wxPython wxGTK-devel \
gcc gcc-c++ bison flex ncurses-devel proj-epsg proj-nad xml2 subversion

''Note 1: that currently gdal-devel has (too) many dependencies and may lead to a massive download of extra packages (200 on a fresh Fedora 16 install). Hopefully solved in later Fedora versions.''

''Note 2: the optional ffmpeg-devel comes from the rpmfusion-free repository ([http://rpmfusion.org/Configuration/ configuration]).''

'''Download''' the source code:
* GRASS GIS 6: [http://grass.osgeo.org/download/software/sources/ release package] - [http://grass.osgeo.org/grass64/source/snapshot/ weekly snapshot] - [http://trac.osgeo.org/grass/wiki/DownloadSource#GRASS6.4 SVN repository]

'''Configure''': This is an ''example'' how to configure the source code on a Fedora system:

./configure \
--with-cxx \
--with-gdal=/usr/bin/gdal-config \
--with-proj --with-proj-share=/usr/share/proj \
--with-sqlite \
--with-nls \
--with-geos \
--with-wxwidgets=/usr/bin/wx-config \
--with-python=/usr/bin/python-config \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--enable-largefile \
--without-odbc \
--with-fftw

Extra: If you also want '''FFMPEG''' support - it requires 'yum install fftw-devel'. Then add to the configuration lines above:

--with-ffmpeg --with-ffmpeg-includes="/usr/include/ffmpeg /usr/include/ffmpeg/libav* /usr/include/ffmpeg/libpostproc /usr/include/ffmpeg/libswscale" \

Finally '''compile''' the configured source code:
make
or on multicore (number depends of available cores):
make -j4
and
make install # requires root permissions unless you become owner of /usr/local/

Then use GRASS GIS 6 and enjoy!

====== GRASS GIS 7 on Fedora ======

'''Preparation''' for the compilation of GRASS GIS 7.8+ source code (F20-F30):

dnf install gcc gcc-c++ bison flex ncurses-devel gettext proj-epsg proj-devel proj-nad \
gdal gdal-devel sqlite-devel xml2 mesa-libGL-devel \
fftw-devel mesa-libGLU-devel libXmu-devel libX11-devel geos geos-devel \
libtiff-devel python3-devel numpy wxPython wxGTK3-devel subversion \
python3-dateutil python3-imaging python3-matplotlib-wx doxygen python3-sphinx \
libzstd-devel libzstd python3-six python3-numpy python3-wxpython4 \
proj-datumgrid proj-datumgrid-europe proj-datumgrid-north-america proj-datumgrid-world proj-datumgrid-oceania

# optionally also: netcdf-devel postgresql-devel
# atlas-devel lapack-devel lapack-devel
# laszip laszip-devel

''Note 1: the optional ffmpeg-devel comes from the rpmfusion-free repository ([http://rpmfusion.org/Configuration/ configuration]).''

'''Download''' the source code:
* GRASS GIS 7: [https://grass.osgeo.org/grass78/source/snapshot/ weekly snapshot] - [http://trac.osgeo.org/grass/wiki/DownloadSource#GRASS7 GitHub repository]

'''Configure''': This is an example how to configure the source code on a Fedora system:

./configure \
--with-cxx \
--with-gdal=/usr/bin/gdal-config \
--with-proj --with-proj-share=/usr/share/proj \
--with-geos \
--with-sqlite \
--with-nls \
--with-wxwidgets=/usr/bin/wx-config \
--with-fftw \
--with-cairo --with-cairo-ldflags=-lfontconfig \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--enable-largefile \
--without-odbc

''Extra 1:'' If you also want '''FFMPEG support''' - it requires 'dnf install fftw-devel' from the rpmfusion-free repository. Then add to the configuration lines above:

--with-ffmpeg --with-ffmpeg-includes="/usr/include/ffmpeg /usr/include/ffmpeg/libav* /usr/include/ffmpeg/libpostproc /usr/include/ffmpeg/libswscale" \

''Extra 2:'' For '''LAPACK/BLAS support''' (addons i.spec.unmix, v.kriging etc), install "dnf install lapack lapack-devel blas blas-devel atlas atlas-devel". Then add to the configuration lines above:
--with-blas --with-blas-includes=/usr/include/atlas-x86_64-base/ \
--with-lapack --with-lapack-includes=/usr/include/atlas-x86_64-base/ \

''Extra 3:'' For '''ZSTD support''' (Zstandard compression algorithm), first install "dnf install libzstd libzstd-devel zstd". After installing the zstd related packages, add to the configuration lines above:
--with-zstd \

Finally '''compile''' the configured source code:
make
or on multicore (number depends of available cores):
make -j4
and
make install # requires root permissions unless you become owner of /usr/local/

Then use GRASS GIS 7 and enjoy!

===== openSUSE =====

To build GRASS on openSUSE:

''Application:Geo'' repo to be added (see [https://software.opensuse.org//download.html?project=Application%3AGeo&package=gdal Install package Application:Geo]

<source lang="bash">
# example for Leap 42 version:
sudo zypper addrepo http://download.opensuse.org/repositories/Application:Geo/openSUSE_Leap_42.3/Application:Geo.repo
sudo zypper refresh
</source>

RPM packages to be installed:
<source lang="bash">
sudo zypper install bison flex freetype2-devel fftw3-devel gcc-c++ \
libgdal-devel libgeos-devel libjpeg-devel libpng-devel libtiff-devel \
man proj libproj-devel readline-devel netcdf-devel ncurses-devel \
mysql-devel postgresql-devel sqlite-devel unixODBC-devel \
tcl-devel tk-devel xorg-x11-Mesa-devel libXmu-devel \
python-numpy python-dateutil python-devel python-opengl \
python-wxWidgets python-xml python-dateutil wxWidgets-devel \
zlib-devel doxygen python-sphinx
</source>

Source code configuration:
<source lang="bash">
./configure \
--enable-largefile \
--with-proj-share=/usr/share/proj \
--with-cxx \
--with-lapack=yes \
--with-x \
--with-motif \
--with-gdal=/usr/bin/gdal-config \
--with-postgres --with-postgres-includes=/usr/include/pgsql \
--with-mysql --with-mysql-includes=/usr/include/mysql \
--with-fftw \
--with-readline \
--with-netcdf \
--with-curses \
--with-geos \
--with-nls \
--with-sqlite \
--with-freetype \
--with-freetype-includes=/usr/include/freetype2 \
--with-wxwidgets \
--with-odbc \
--with-python
</source>

Then compile with "make [-j2]".

===== Arch Linux =====

Up-to-date links to Arch Linux GRASS PKGBUILDs are on https://grass.osgeo.org/download/software/linux/.

But if you want to compile it yourself, you have to keep in mind that in Arch Linux the default Python version 3.

python --version

Python 3.3.1

Therefore, to build GRASS GIS (version 7 in this example), we can use either use virtualenv or symlink python2 and python2-config in a given directory.
Let's use the latter approach

sudo ln -s /usr/bin/python2 $HOME/usr/bin/python
sudo ln -s /usr/bin/python2-config $HOME/usr/bin/python-config

We can now start building GRASS 7

export PATH=~/usr/bin:$PATH && \
./configure \
--enable-debug \
--enable-64bit \
--with-libs=/usr/lib64 \
--with-cxx \
--with-readline \
--with-zlib-includes="/usr/include/" \
--with-freetype=yes \
--with-freetype-includes="/usr/include/freetype2/" \
--enable-largefile=yes \
--with-gdal=/usr/bin/gdal-config \
--with-proj-share=/usr/share/proj/ \
--with-geos=/usr/bin/geos-config \
--with-cairo \
--with-odbc \
--with-pthread \
--with-liblas=/usr/local/bin/liblas-config \
--with-fftw-includes="/usr/include/" \
--with-fftw-libs=/usr/lib/ \
--with-tcltk-includes="/usr/include/" \
--with-wxwidgets \
--with-postgres=yes \
--with-postgres-includes="/usr/include/postgresql/internal" \
--with-postgres-libs="/usr/include/postgresql/internal/libpq" \
--with-sqlite=yes \
--with-python=yes \
--with-liblas \
--with-netcdf

Now let's compile and install it

make
sudo make install

Now the final step required to use GRASS with python2 is to create a bash script "grass" (or the name you want)

#!/bin/bash
export PATH=~/usr/bin:$PATH
python2 /usr/local/bin/grass72

And make it executable and copy it somewhere in the PATH

chmod+x grass
sudo cp grass /usr/local/bin

It's done, you can enjoy GRASS 7 in Arch, just type "grass" (or the name you gave to the script) in the terminal to launch it.

===== RPM SPEC files =====
* [https://build.opensuse.org/package/show?package=grass&project=Application%3AGeo OpenSuSe]
* [http://pkgs.fedoraproject.org/cgit/rpms/grass.git/tree/grass.spec Fedora]
* ...

===== Zaurus =====

... see [http://wiki.debian.org/?GrassGISonZaurus here] for instructions

==== Mac OSX ====

===== Compilation and installation =====
* [[Compiling on MacOSX using homebrew]]
* [[Compiling on MacOSX]] (rather outdated)
* [[Compiling on MacOSX using Fink]] (rather outdated)
* [https://grass.osgeo.org/download/software/mac-osx/ official download site]
* [http://www.kyngchaos.com/software/frameworks#build_scripts build scripts for dependencies] (still relevant?)

Troubleshooting:
* solving errors at starting GRASS GIS: [[MacOSX GRASS errors]]

==== FreeBSD / NetBSD ====

The recommended compiler tools are GCC, GNU make, GNU coreutils (for install), and flex. All are available through the respective package managing tools (pkg_add for FreeBSD and pkgin install for NetBSD) and for recent *BSD versions most likely installed by default.

GRASS 6.x and GRASS 7 should compile on FreeBSD 8.0 or later and NetBSD 5.0 or later (maybe also on updated NetBSD 4.x).

It is highly recommended to install GDAL/OGR and PROJ4 first. These libraries and tools are available as [http://www.freebsd.org/ports/ ports for FreeBSD] and [http://www.pkgsrc.org/ packages for NetBSD].

Optional functionality is listed with ''./configure --help'', and related libraries and tools might need to be installed first.

You then may need to edit include/Make/Platform.make and set
ICONVLIB = -liconv

==== Solaris ====

* ''2008 Oct 15'': see [http://lists.osgeo.org/pipermail/grass-user/2008-October/047093.html this post on the grass mailing list]

===== 11 SPARC/i86pc =====

The recommended compiler tools are GCC, GNU make, GNU coreutils (for install), and flex. All are available through the Solaris package manager.

Most dependencies are available through the Solaris package manager. GDAL and proj4 can either be compiled from source or installed e.g. from [http://www.opencsw.org/ OpenCSW]. If packages are installed from OpenCSW, the linker flags need to be set with

LDFLAGS="-Wl,-R/opt/csw/lib -L/opt/csw/lib -Wl,-R/opt/csw/gxx/lib -L/opt/csw/gxx/lib"

See also the [http://www.opencsw.org/use-it/ OpenCSW documentation].

===== 10 SPARC/i86pc =====

* get gcc compiler and tools. There are several sources: Solaris Companion CD (SFW pkg, installs in /opt/sfw/), Blastwave ([http://www.blastwave.org], CSW pkg, installs in /opt/csw/) or Sunfreeware ([http://www.sunfreeware.com], SMC pkg, installs in /usr/local/).
Needed Packages from Sunfreeware: SMCbinut, SMCbison, SMCcoreu, SMCfindu, SMCflex, SMCgawk, SMCgcc, SMCgrep, SMCgzip, SMCless, SMClibt, SMClicon, SMCmake, SMCncurs, SMCproj, SMCsed, SMCtar, SMCtcl, SMCtiff, SMCtk, SMCunzip, SMCzlib.

* compile and install fftw-library ([http://www.fftw.org]). You need to re-compile the library with:

./configure --with-pic --enable-shared; make ; make install.

The pre-built packages don't work.

* compile and install gdal library (see documentation of gdal, [http://www.gdal.org]).

* compile and install any additional libraries (e. g. GEOS, [http://geos.refractions.net]).

* set compiler flags and path. e. g.:

# on ultra-sparc machine:
CFLAGS="-O3 -mcpu=v9"
CXXFLAGS="-O3 -mcpu=v9"
PATH="/usr/local/bin:/opt/sfw/bin:/usr/ccs/bin:/usr/bin:/usr/sbin"
export CFLAGS CXXFLAGS PATH

Path has to be changed for the packages (Sunfreeware: /usr/local/bin, Solaris Companion: /opt/sfw/bin, Blastwave: /opt/csw/bin).

* Next configure, e. g.:

./configure --with-postgres-includes=/usr/include/pgsql/ \
--with-postgres-libs=/usr/lib --with-postgres=yes \
--with-includes=/usr/local/include/ncurses

If you use n(ew)curses, you have to include the path /usr/local/include/ncurses.

then:

make
su
make install

If the shared libraries are not found at runtime of the modules, use 'crle' to add the paths of the libraries for the dynamic linker, e. g. as root:

crle -l /lib:/usr/lib:/usr/local/lib:/opt/sfw/lib:/usr/X11/lib

Be careful not to omit a library path, the system may be unusable if you forget the /lib path.

==== AIX ====

A recent [ftp://ftp.gnu.org/gnu/make/ GNU make] (>= 3.81) and GNU coreutils are required. These are available with the [http://www-03.ibm.com/systems/power/software/aix/linux/toolbox/download.html IBM AIX toolbox] or through third-party AIX software repositories, e.g. [http://www.bullfreeware.com/ bullfreeware] and [http://www.perzl.org/aix/ perzl.org]. Note that 'make' does not work, only 'gmake' works.

General instructions to compile on AIX are e.g. [http://www.perzl.org/aix/index.php?n=Main.Instructions here]

On AIX, compilation results by default in 32 bit applications and static libraries. The [http://www.ibm.com/developerworks/aix/library/au-gnu.html IBM documentation] explains how to build 64 bit applications and shared libraries with GCC.

'''GRASS 6: Using the IBM xlc compiler:'''
* ''see [http://thread.gmane.org/gmane.comp.gis.grass.user/32667 this mailing list thread]''

Mike wrote in 2009:

After attempting all the suggestions, I finally used
--disable-shared on the configure command, and all but
a handful of modules successfully compiled. I was able to
individually address the ones that failed through Makefile
edits and several small source code/header file edits.

The environment variables and configure command that worked were:
<pre>
# xlc compiler:
export PATH=/usr/local/bin:/opt/freeware/bin:$PATH
export OBJECT_MODE=64
export LIBICONV=/opt/freeware
export CC="xlc_r -q64"
export CFLAGS="-O -qstrict"
export CXX="xlC_r -q64"
export CXXFLAGS="-O -qstrict"
export AR="ar -X64"
export F77="xlf_r -q64"
export CPPFLAGS="-I/afs/isis/pkg/libpng/include -I/usr/local/include -I$LIBICONV/include -I/usr/lpp/X11/include/X11"
export LDFLAGS="-L/usr/local/lib -L$LIBICONV/lib -L/usr/lib -L/usr/X11R6/lib -lc"

./configure --prefix=/afs/isis/pkg/grass-6.4.0 \
--enable-64bit \
--disable-shared \
--with-includes="/usr/include/fontconfig /usr/include/X11 /usr/include/X11/Xft /usr/include/X11/ext" \
--x-includes=/usr/include/X11 \
--x-libraries=/usr/X11R6/lib \
--with-fftw-includes=/afs/isis/pkg/fftw-3.2.2/include \
--with-fftw-libs=/afs/isis/pkg/fftw-3.2.2/lib \
--with-gdal=/afs/isis/pkg/gdal/bin/gdal-config \
--with-proj-includes=/afs/isis/pkg/proj/include \
--with-proj-libs=/afs/isis/pkg/proj/lib \
--with-proj-share=/afs/isis/pkg/proj/share/proj \
--with-tcltk-includes=/usr/local/include \
--with-tcltk-libs=/usr/local/lib \
--with-opengl-includes=/usr/include/GL
</pre>

'''GRASS 7: Using the IBM xlc compiler:'''

Get and install (in this order):
* [ftp://ftp.gnu.org/gnu/tar/ GNU tar]
* [ftp://ftp.gnu.org/gnu/make/ GNU make] (>= 3.81)
* [http://www.sqlite.org SQLite]
* [http://trac.osgeo.org/proj/ PROJ.4] (for ./configure parameters, see [[Talk:Compile and Install|here]])
* [http://www.gdal.org GDAL] (for ./configure parameters, see [[Talk:Compile and Install|here]])
* [http://grass.osgeo.org/grass74/source/snapshot/ GRASS GIS 7]

The environment variables and configure command that worked:
<pre>
## AIX 5.x

export LIBPATH=/opt/freeware/lib64:/opt/freeware/lib
# make 'ar' happy
export OBJECT_MODE=64

PREFIX=$HOME/private/bin
./configure \
--prefix=$PREFIX \
--disable-shared \
--enable-largefile \
--with-cxx \
--with-proj-includes=$PREFIX/include/ \
--with-proj-libs=$PREFIX/lib/ \
--with-proj-share=$PREFIX/share/proj/ \
--with-sqlite \
--with-sqlite-includes=$PREFIX/include/ \
--with-sqlite-libs=$PREFIX/lib/ \
--with-tiff=no \
--with-png=no \
--with-fftw=no \
--with-cairo=no \
--with-freetype=no
</pre>

'''GRASS 7: Using the GNU gcc compiler:'''

Get and install (in this order):
* if needed, [ftp://ftp.gnu.org/gnu/tar/ GNU tar]
* if needed (the name is often 'gmake' and not 'make') [ftp://ftp.gnu.org/gnu/make/ GNU make] (>= 3.81)
* [http://www.sqlite.org SQLite]
* [http://trac.osgeo.org/proj/ PROJ.4] (for ./configure parameters, see [[Talk:Compile and Install|here]])
* [http://www.gdal.org GDAL] (for ./configure parameters, see [[Talk:Compile and Install|here]])
* [http://grass.osgeo.org/grass74/source/snapshot/ GRASS GIS 7]

The environment variables and configure command that worked for AIX 5.x:
<pre>
## AIX 5.x

export LIBPATH=/opt/freeware/lib64:/opt/freeware/lib
# make 'ar' happy
export OBJECT_MODE=64

PREFIX=$HOME/private/bin
CFLAGS='-ansi -D_ALL_SOURCE=1 -D_POSIX_SOURCE=1 -D_POSIX_C_SOURCE=200809L -Dinline=' ./configure \
--prefix=$PREFIX \
--disable-shared \
--enable-largefile \
--with-cxx \
--with-proj-includes=$PREFIX/include/ \
--with-proj-libs=$PREFIX/lib/ \
--with-proj-share=$PREFIX/share/proj/ \
--with-sqlite \
--with-sqlite-includes=$PREFIX/include/ \
--with-sqlite-libs=$PREFIX/lib/ \
--with-tiff=no \
--with-png=no \
--with-fftw=no \
--with-cairo=no \
--with-freetype=no
</pre>

The environment variables and configure command that worked for AIX 7.x:
<pre>
## AIX 7.x
export CC="gcc"
export CXX="g++"
PREFIX=$HOME/bin

LDFLAGS="-Wl,-bsvr4,-R,/opt/freeware/lib -L/opt/freeware/lib" CPPFLAGS="-I/opt/freeware/include" ./configure \
--prefix=$PREFIX \
--enable-largefile \
--enable-shared \
--with-includes=/opt/freeware/include --with-libs=/opt/freeware/lib \
--with-cxx \
--with-proj-includes=$PREFIX/include/ \
--with-proj-libs=$PREFIX/lib/ \
--with-proj-share=$PREFIX/share/proj/ \
--with-gdal=$PREFIX/bin/gdal-config \
--with-sqlite \
--with-sqlite-libs=$PREFIX/lib --with-sqlite-includes=$PREFIX/include \
--with-png=no \
--with-tiff=no \
--with-fftw=no \
--with-cairo=no \
--with-opengl=no \
--with-freetype=no
</pre>

==== MS-Windows ====

===== MS-Windows/Cygwin =====

* See the [[Cygwin]] wiki pages

===== MS-Windows/native =====

====== Compile ======

* [http://trac.osgeo.org/grass/wiki/CompileOnWindows GRASS Windows Native Binary Building Guide] (GRASS 6.4.x + 7.x)
* <strike>[http://www.webalice.it/marco.pasetti/grass/BuildFromSource.html GRASS Windows Native Binary Building Guide] (GRASS 6.3.x) </strike>
* See/adapt [http://blog.qgis.org/node/124 idea] for unattended install of QGIS (et al) from [http://trac.osgeo.org/osgeo4w/ OSGeo4W] from the QuantumGIS Blog.

See also [[WinGRASS Current Status]] for latest updates.

=== Common problems and solutions ===

During compilation, error can occur if certain packages are not installed. Here a list of problems with solution:

* error: X11/Xlib.h: No such file or directory
** this suggests that you don't have the X headers installed
** Solution: Install the libx11-dev package

* error: g.list: error while loading shared libraries: libgdal1.6.0.so.1: cannot open shared object file: No such file or directory
** this error appears in the shell right after the user clicks GUI's "Start GRASS" button. The GUI shows an error about geographic extent and gets closed afterwards.
** It happens when you launch bin.i686 executable on 64bit system. Be careful and choose the right architecture.

=== Static compilation ===

In order to get static rather than dynamically linked binaries, configure like this:

./configure --disable-shared --enable-static

This will however break the wxGUI and GRASS 7 completely because "ctypes" wants to link against shared libs, or there is something in the static libs that "ctypes" does not like.

=== Optimization ===

GCC and other compilers support [http://gcc.gnu.org/onlinedocs/gcc-4.3.3/gcc/Optimize-Options.html#Optimize-Options optimization]

If you would like to set compiler optimisations, for a possibly faster binary, type (don't enter a ";" anywhere):

CFLAGS=-O ./configure
or,
setenv CFLAGS -O
./configure

whichever works on your shell. Use -O2 instead of -O if your compiler supports this (note: O is the letter, not zero). Using the "gcc" compiler, you can also specify processor specific flags (examples, please suggest better settings to us):

CFLAGS="-mcpu=athlon -O2" # AMD Athlon processor with code optimisations
CFLAGS="-march=amdfam10" # AMD Phenom II X4 64bit processor with gcc >=4.3
CFLAGS="-mcpu=pentium" # Intel Pentium processor
CFLAGS="-mcpu=pentium4" # Intel Pentium4 processor
CFLAGS="-O2 -msse -msse2 -mfpmath=sse -minline-all-stringops" # Intel XEON 64bit processor
CFLAGS="-mtune=nocona -m64 -minline-all-stringops" # Intel Pentium 64bit processor

To find out optional CFLAGS for your platform, enter:
gcc -dumpspecs

See also: http://gcc.gnu.org/

A real fast GRASS version (and small binaries) will be created with LDFLAGS set to "stripping" (but this disables debugging):

CFLAGS="-O2 -mcpu=<cpu_see_above> -Wall" LDFLAGS="-s" ./configure

=== Configure options and their meanings ===

For configure there are many options and some GRASS modules are built only if some options are set. Here are listed common configuration options with short explanation.

* --prefix=/path - Sets path where GRASS will be installed. GRASS will reside in /path/grass-version.
* --enable-largefile - Enables large (>2Gb on 32bit systems) support. For current large file support status look at [[Large File Support]] page.
* --with-cxx - Enables compilation of C++ code. Required for r.terraflow module.
* --with-readline - Enables readline support. If readline is enabled, you can use its history/editing facilities when entering r.mapcalc expressions on stdin.
* --with-glw - Enables GLw support. The GLw library provides OpenGL "canvas" widgets for Athena and Motif.

That switch is unnecessary for normal compilation. It's only
required for r3.showdspf, which isn't normally built; if you
want it, you have build it manually
(e.g. "make -C raster3d/r3.showdspf").
As similar functionality is now provided by NVIZ, r3.showdspf
is deprecated.
r3.showdspf uses the Motif widget (so you also need a
Motif library, e.g. Lesstif or OpenMotif).
[http://grass.itc.it/pipermail/grassuser/2006-December/037475.html Glynn Clements at GRASS-user mailing list]

=== Parallelized compilation on multi-core CPUs ===

You can dramatically accelerate the compilation of the GRASS code with the -j flag of "make" if you have a multi-core CPU system. This determines the maximum number of jobs to have running at once, so cores don't have to sit idle waiting for jobs on other cores to complete. A good rule of thumb for this value is <tt>number_of_cores * 1.5</tt>, but note that setting any higher than the actual number of cores will only affect the timing slightly. For example, on a dual-core processor:
make -j 4



== GRASS-GDAL plugin ==

* see [[Compile and install GRASS and QGIS with GDAL/OGR Plugin]]

== Addons ==

Please note that the installation of [[AddOns/GRASS_6|Addons]] can be easily done with the {{cmd|g.extension}} manager. The compile instructions below are aiming at own development.

=== Compiled modules ===

This is the general way which works for C modules as well as scripts (Python or Shell/Bash modules) which has HTML documentation.

'''Requirements:'''

Either:
* a binary GRASS package, or
* source code which has been prepared with:
./configure [opionally flags]
make libs

Each of the [[GRASS_AddOns|addon]] modules should come with a Makefile. To compile it, just run:
make MODULE_TOPDIR=/path/to/grass64/

Note that the <tt>/path/to/grass64</tt> has to be absolute, not relative.

If using Bash it may be useful to set that up as an alias:
alias gmake64='make MODULE_TOPDIR=/path/to/grass64/'

Installation (perhaps requires "sudo"):
make MODULE_TOPDIR=/path/to/grass64/ install

Note: Compiled addons may require a re-compilation if you changed/updated your GRASS standard binaries.

==== If binary comes with a -dev package ====

''(work in progress, this text states how it eventually will be :)''
Nowadays one does not need to the source code, nor compiling GRASS by oneself to be able to add add-ons. On Debian, you can just install the grass-dev package and then run:
make MODULE_TOPDIR=/usr/lib/grass64/ INST_DIR=/usr/lib/grass64/

The grass-dev package essentially provides GRASS's <tt>include</tt> header files and Make configuration files.

=== Scripts ===

If the addon module is a script, it is sufficient to copy it into the (GRASS binaries) path somewhere. Alternatively, install addons into a separate GRASS addons binaries/scripts directory which is easier to maintain. It avoids getting clobbered every time you reinstall GRASS. To use these separately stored scripts, set and export the GRASS_ADDON_PATH environment variable before starting GRASS and it will automatically be added to the module search path (see the {{cmd|variables}} help page). To simplify this, do for example:

# add in $HOME/.bashrc:
GRASS_ADDON_PATH=/usr/local/grass/addons/
export GRASS_ADDON_PATH

Make sure that the script is executable, then just call it in GRASS typing the filename. Python scripts need to be called writing the extension as well, like:

GRASS 6.5.svn (spearfish60):~ > v.krige.py

[[Category:Development]]
[[Category:Documentation]]
[[Category:Installation]]

Compile and Install

2020-05-17T20:48:04Z

⚠️Landa: /* Generic procedure for Debian-based distributions (Ubuntu, ...) */

Compile and Install

2020-05-17T20:47:29Z

⚠️Landa: /* Generic procedure for Debian-based distributions (Ubuntu, ...) */

Compile and Install

2020-05-17T20:37:03Z

⚠️Landa: /* Generic procedure for Debian-based distributions (Ubuntu, ...) */

'''Disclaimer''': This page explains how to turn the GRASS GIS source code into an installable binary package ("compilation") for different operating systems. If you just want to get ready-to-use binaries, go [https://grass.osgeo.org/download/ here], otherwise read on...

== How to do compilation and installation of GRASS GIS? ==

Here we explain the procedure to compile GRASS from GitHub, but it also applies to official GRASS 7 releases.

''For installation of precompiled binary packages, see the main [[Installation Guide]].''

For detailed information on compilation, please see the [https://github.com/OSGeo/grass/blob/master/INSTALL INSTALL] file in the source code.

=== Prerequisites ===

==== Extra libraries ====
GRASS GIS needs at least two extra libraries: PROJ and GDAL/OGR. It is recommended to download them as ready-to-use packages for your software platform (Linux distribution, Windows, Mac...).

Other libraries needed to run GRASS are listed on the [http://htmlpreview.github.io/?https://github.com/OSGeo/grass/blob/master/REQUIREMENTS.html requirements page].

To compile, you will also need the respective "-devel" packages; see below for details.

==== Download GRASS GIS source code ====

First, [https://grass.osgeo.org/download/software/sources/ download the GRASS GIS source code].

=== Generic Compilation and installation procedure ===

* It is wise that compilation processes are carried out as a normal user: If you want to get the source code in a place where you do not have write permissions (e.g. in /usr/local/src/) just follow this:
cd /usr/local/src/
su -c 'mkdir grass7'
su -c 'chown yourlogin:yourgroup grass7'

Otherwise if you have permissions just continue as a normal user:
mkdir $HOME/src
cd $HOME/src/
git clone https://github.com/OSGeo/grass.git grass_master

* run configure with parameters to adapt the compile process to your own system. To see what options can be passed to it, run:
./configure --help | less


It may (!) look like this:

./configure \
--with-cxx \
--with-sqlite \
--with-python \
--with-geos \
--with-gdal=/usr/bin/gdal-config \
--with-cairo --with-cairo-ldflags=-lfontconfig \
--with-freetype \
--with-freetype-includes=/usr/include/freetype2 \
--with-proj --with-proj-share=/usr/share/proj

You may have to explicitly state the path for certain packages (i.e., gdal). The Unix 'locate' command will come in handy for finding the path of the package you need (you may have to run locate as root ex: sudo locate gdal-config).

Please note that the paths mentioned may widely vary due to the distribution used.
See [[Compile_and_Install#Platform_Specific_Notes|Platform Specific Notes]] below.

Depending on your needs it may be a good idea to include debugging hooks.
: See [[GRASS_Debugging#Compile_Time_Setup]].
CFLAGS="-ggdb -Wall -Werror-implicit-function-declaration" ./configure ...

At the end of configuration process you should get report not much different from this:

GRASS is now configured for: x86_64-pc-linux-gnu

Source directory: /home/user/software/grass_master
Build directory: /home/user/software/grass_master
Installation directory: ${prefix}/grass79
Startup script in directory:${exec_prefix}/bin
C compiler: gcc -O2 -march=native -std=gnu99 -fexceptions -fstack-protector -m64 -fdiagnostics-color
C++ compiler: c++ -g -Wall
Building shared libraries: yes
OpenGL platform: X11

MacOSX application: no
MacOSX architectures:
MacOSX SDK:

BLAS support: yes
BZIP2 support: no
C++ support: yes
Cairo support: yes
DWG support: no
FFTW support: yes
FreeType support: yes
GDAL support: yes
GEOS support: yes
[...]

* Let's compile it (takes a little while...)!
make -j2
* At the end, you should get report not much different from this:
----------------------------------------------------------------------
Following modules are missing the 'description.html' file in src code:
----------------------------------------------------------------------
GRASS GIS compilation log
-------------------------
Started compilation: Mon 19 Aug 2019 10:47:57 PM CEST
--
Errors in:
No errors detected.
--
Finished compilation: Mon 19 Aug 2019 10:55:12 PM CEST
(In case of errors please change into the directory with error and run 'make')

* If there is any error, change directory to directory with error and run "make" again. Report occurring bug to GRASS mailing list
* Once the installation process is finished, you're ready to install GRASS system wide.
su -c 'make install'
* enjoy GRASS:
grass79

=== What else? ===

If you want to use [http://www.qgis.org QGIS], then also compile the GRASS-GDAL/OGR plugin. This is also useful to access your GRASS-data
from other application using GDAL/OGR like [http://thuban.intevation.de thuban].
* [[Compile and install GRASS and QGIS with GDAL/OGR Plugin]] (enables QGIS to read GRASS data directly)

=== Compile and install GDAL-GRASS plugin ===

* See [[Compile and install GDAL-GRASS plugin]]

=== Platform Specific Notes ===

==== Linux ====

Linux comes in various flavours, i.e. distributions.

===== Distribution related packaging =====

* Arch Linux: https://github.com/czka/AUR-grass7
* Centos: https://src.fedoraproject.org/rpms/grass
* Debian: https://trac.osgeo.org/grass/wiki/DebianUbuntuPackaging
* EPEL: https://src.fedoraproject.org/rpms/grass
* Fedora: https://src.fedoraproject.org/rpms/grass
* Ubuntu: https://trac.osgeo.org/grass/wiki/DebianUbuntuPackaging

===== Generic procedure for Debian-based distributions (Ubuntu, ...) =====

WORK IN PROGRESS

1. Install official GRASS package

sudo apt install grass grass-dev

2. Enable source code download

# do backup first
sudo cp /etc/apt/sources.list /etc/apt/sources.list.orig
sudo sed -i '/^#\sdeb-src /s/^# *//' /etc/apt/sources.list

3. Install GRASS dependencies

sudo apt build-dep grass

4. Download GRASS source code

git clone https://github.com/osgeo/grass

5. Compile GRASS from source code

cd grass

Configure:

grass --config build | sh

Optionally install missing dependecies (can happen when official GRASS package is not compatible with GRASS master), eg.

sudo apt install libzstd-dev

Compile:

make -j2

6. Run locally or install

./bin.

or

sudo make install
grass79 --version

===== Debian =====

* Official [http://wiki.debian.org/DebianGis DebianGIS] packaging control files, available on git server:
git://git.debian.org/git/pkg-grass/grass.git

http://anonscm.debian.org/cgit/pkg-grass/grass.git/

====== GRASS 6.1 on Debian Sarge ======

* [http://hamish.bowman.googlepages.com/debiangisfiles#compile Compiling GRASS 6.1-CVS on Debian/OldStable (aka 3.1, Sarge)]

====== GRASS 6.4 on Debian Lenny ======

Install needed packages:
apt-get install flex bison libreadline-dev libncurses5-dev lesstif2-dev debhelper dpatch libtiff4-dev \
tcl-dev tk-dev libfftw3-dev libxmu-dev libfreetype6-dev autoconf2.13 autotools-dev doxygen \
libmysqlclient15-dev graphviz libsqlite3-dev python-wxgtk2.8 libcairo2-dev libwxgtk2.8-dev \
python-dev libgdal1-dev libgdal1-1.5.0 libproj-dev libproj0 proj-bin proj-data mysql

# Important: avoid using CFLAGS="... -Werror-implicit-function-declaration" (also on later Debian versions), see {{trac|1684}}

Configure:
./configure \
--with-cxx \
--with-sqlite \
--with-postgres --with-postgres-includes=/usr/include/postgresql \
--with-mysql --with-mysql-includes=/usr/include/mysql --with-mysql-libs=/usr/lib/mysql \
--with-odbc \
--with-cairo \
--with-proj-share=/usr/share/proj \
--with-tcltk-includes=/usr/include/tcl8.4/ \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-motif --with-fftw --with-nls --with-python \
--with-x --x-libraries=/usr/lib/x86_64-linux-gnu

Compile:
make

Install:
sudo make install

====== GRASS 6.4 on Debian Jessie ======

Install needed packages:
apt-get install flex bison debhelper dpatch autoconf2.13 autotools-dev \
python-dev g++ gcc gettext graphviz libcairo2-dev libfftw3-dev tcl-dev tk-dev \
libfreetype6-dev libgdal1h libgdal1-dev libglu1-mesa-dev libglw1-mesa-dev \
libncurses5-dev libreadline-dev libsqlite3-dev libtiff5-dev \
libwxgtk3.0-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
libproj-dev proj-bin proj-data python-numpy python-wxgtk3.0 subversion wx-common zlib1g-dev \
netcdf-bin libnetcdf-dev libatlas-dev libgegl-dev doxygen postgresql mysql-server \
libgeotiff-dev libblas-dev libgeotiff-epsg libxmu-dev libxt-dev libx11-dev

# Important: avoid using CFLAGS="... -Werror-implicit-function-declaration" (also on later Debian versions), see {{trac|1684}}

Configure:
./configure \
--with-cxx \
--with-sqlite \
--with-postgres \
--with-odbc \
--with-cairo \
--with-geos \
--with-proj-share=/usr/share/proj \
--with-tcltk-includes=/usr/include/tcl8.6/ \
--with-mysql --with-mysql-includes=/usr/include/mysql --with-mysql-libs=/usr/lib/mysql \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-motif \
--with-fftw \
--with-nls \
--with-postgres-includes=/usr/include/postgresql \
--with-python \
--with-x --x-libraries=/usr/lib/x86_64-linux-gnu

Compile:
make

Install:
sudo make install

====== GRASS 7 on Debian Squeeze ======

Install needed packages:
apt-get install flex bison debhelper dpatch autoconf2.13 autotools-dev python-dev \
g++ gcc gettext graphviz libcairo2-dev libfftw3-dev libfreetype6-dev \
libgdal1 libgdal1-dev libglu1-mesa-dev libglw1-mesa-dev \
libncurses5-dev libproj-dev libreadline-dev libsqlite3-dev libtiff4-dev \
libwxgtk2.8-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
proj-bin proj-data python-numpy python-wxgtk2.8 subversion wx-common zlib1g-dev

Download source code:

svn checkout https://svn.osgeo.org/grass/grass/trunk grass_trunk

Configure:

cd grass_trunk/
CFLAGS="-Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused" \
CXXFLAGS="-Wall" \
./configure --prefix=/usr/local \
--with-gdal --with-proj --with-proj-share=/usr/share \
--with-glw --with-nls --with-readline \
--without-tcltk \
--with-cxx \
--enable-largefile \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-sqlite \
--with-cairo --with-python=/usr/bin/python2.6-config --with-wxwidgets \
--with-geos --with-pthread

Compile:
make

Install:
sudo make install # installs as /usr/local/bin/grass72

====== GRASS 7 on Debian Wheezy ======

Install needed packages:

# note: cmake and libboost-all-dev only needed for optional libLAS
sudo apt-get install cmake libboost-all-dev

sudo apt-get install flex bison debhelper dpatch autoconf2.13 autotools-dev \
python-dev g++ gcc gettext graphviz libcairo2-dev libfftw3-dev libfreetype6-dev \
libgdal1 libgdal1-dev libglu1-mesa-dev libglw1-mesa-dev libncurses5-dev libproj-dev \
libreadline-dev libtiff4-dev libwxgtk2.8-dev libxmu-dev libxmu-headers \
libxt-dev mesa-common-dev proj-bin proj-data python-numpy python-wxgtk2.8 subversion wx-common \
zlib1g-dev netcdf-bin libatlas-dev libgegl-dev opencl-headers ocl-icd-libopencl1 \
libsqlite3-dev postgresql python-sphinx python-gdal

Download and Install libLAS
wget http://download.osgeo.org/liblas/libLAS-1.7.0.tar.gz
tar -zxvf libLAS-1.7.0.tar.gz
cd libLAS-1.7.0/
mkdir makefiles
cd makefiles
cmake -G "Unix Makefiles" ../
make
sudo make install
sudo ldconfig
cd ../..

Download of GRASS GIS 7 source code:
wget http://grass.osgeo.org/grass78/source/grass-7.8.0.tar.gz
tar -zxvf grass-7.8.0.tar.gz

Configure:
cd grass-7.0.0
CFLAGS="-g -Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused" CXXFLAGS="-g -Wall" \
./configure \
--prefix=/usr/local \
--with-gdal \
--with-proj --with-proj-share=/usr/share \
--with-glw --with-nls --with-readline \
--with-cxx --enable-largefile \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-sqlite --with-cairo --with-python=/usr/bin/python-config \
--with-wxwidgets --with-geos --with-blas \
--with-lapack-includes=/usr/lib/lapack --with-liblas=yes \
--with-netcdf=/usr/bin/nc-config --with-odbc=yes \
--with-openmp=yes --with-pthread=yes --with-postgres=yes \
--with-postgres-includes=/usr/include/postgresql \
--with-postgres-libs=/usr/lib/postgresql

# --with-mysql=yes --with-mysql-includes=/usr/include/mysql \
# --with-mysql-libs=/usr/lib/mysql \

GRASS GIS 7 is now configured (example):

Source directory: /home/user/grass-7.0.0
Build directory: /home/user/grass-7.0.0
Installation directory: ${prefix}/grass-7.0.0
Startup script in directory:${exec_prefix}/bin
C compiler: gcc -g -Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused
C++ compiler: c++ -g -Wall
Building shared libraries: yes
OpenGL platform: X11
MacOSX application: no
MacOSX architectures:
MacOSX SDK:
BLAS support: yes
C++ support: yes
Cairo support: yes
DWG support: no
FFTW support: yes
FreeType support: yes
GDAL support: yes
GEOS support: yes
LAPACK support: no
Large File support (LFS): yes
libLAS support: yes
MySQL support: no
NetCDF support: yes
NLS support: yes
ODBC support: yes
OGR support: yes
OpenCL support: no
OpenGL support: yes
OpenMP support: yes
PNG support: yes
POSIX thread support: yes
PostgreSQL support: yes
Readline support: yes
Regex support: yes
SQLite support: yes
TIFF support: yes
wxWidgets support: yes
X11 support: no

Compile:
make -j2

Install:
sudo make install # installs as /usr/local/bin/grass70

Launch:
grass70

====== GRASS 7 on Debian Jessie ======

Install needed packages:
sudo apt-get install cmake libboost-all-dev flex bison debhelper dpatch autoconf2.13 \
autotools-dev python-dev g++ gcc gettext graphviz libcairo2-dev libfftw3-dev \
libfreetype6-dev libgdal1h libgdal1-dev libglu1-mesa-dev libglw1-mesa-dev \
libncurses5-dev libproj-dev libreadline-dev libsqlite3-dev libtiff5-dev \
libwxgtk3.0-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
proj-bin proj-data python-numpy python-wxgtk3.0 subversion wx-common zlib1g-dev \
netcdf-bin libnetcdf-dev libgegl-dev doxygen python-sphinx \
postgresql libgeotiff-dev libblas-dev mysql-server \
libatlas-dev liblapack3gf liblapack-dev
# opencl-headers ocl-icd-libopencl1 liblas-bin liblas-c-dev python-gdal

Download and compile libLAS (or simply install 'liblas-c-dev ', see above):
wget http://download.osgeo.org/liblas/libLAS-1.8.0.tar.bz2
tar xjf libLAS-1.8.0.tar.bz2
mkdir libLAS-1.8.0/makefiles
cd libLAS-1.8.0/makefiles
cmake -G "Unix Makefiles" ../
make
sudo make install

Download and compile GRASS 7:
# (check there for later version)
wget http://grass.osgeo.org/grass74/source/grass-7.4.0.tar.gz
tar xzfv grass-7.4.0.tar.gz
cd grass-7.4.0
CFLAGS="-g -Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused" \
CXXFLAGS="-g -Wall" \
./configure \
--prefix=/usr/local \
--with-gdal --with-proj --with-proj-share=/usr/share \
--with-glw --with-nls --with-readline \
--with-cxx --enable-largefile \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-sqlite --with-cairo --with-python=/usr/bin/python-config \
--with-wxwidgets --with-geos \
--with-blas --with-blas-includes=/usr/include/atlas/ \
--with-lapack --with-lapack-includes=/usr/include/atlas/ \
--with-netcdf=/usr/bin/nc-config --with-odbc=yes \
--with-openmp=yes --with-pthread=no --with-postgres=yes \
--with-postgres-includes=/usr/include/postgresql \
--with-postgres-libs=/usr/lib/postgresql \
--with-mysql=yes --with-mysql-includes=/usr/include/mysql \
--with-mysql-libs=/usr/lib/mysql
make -j2

Install:
sudo make install # installs as /usr/local/bin/grass74

====== GRASS 7 on Debian Stretch ======
(Updated from above with package changes required for Debian Stretch)

Install needed packages for GRASS 7.2 - 7.6:
apt-get install cmake libboost-all-dev flex bison debhelper dpatch autoconf2.13 autotools-dev \
python-dev g++ gcc gettext graphviz libcairo2-dev libfftw3-dev libfreetype6-dev libgdal20 \
libgdal-dev libglu1-mesa-dev libglw1-mesa-dev libncurses5-dev libproj-dev libreadline-dev \
libsqlite3-dev libtiff5-dev libwxgtk3.0-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
proj-bin proj-data python-numpy python-wxgtk3.0 python-wxtools wx-common zlib1g-dev netcdf-bin \
libnetcdf-dev libgegl-dev doxygen python-sphinx postgresql libgeotiff-dev libblas-dev \
mariadb-server libatlas-dev liblapack3 liblapack-dev opencl-headers ocl-icd-libopencl1 \
subversion liblas-bin liblas-c-dev python-gdal libpdal-dev libpdal-plugin-python pdal

Install needed packages for GRASS 7.8+ (Python 3 support!):
apt-get install cmake libboost-all-dev flex bison debhelper dpatch autoconf2.13 autotools-dev \
g++ gcc gettext graphviz libcairo2-dev libfftw3-dev libfreetype6-dev libgdal20 python3-dev \
libgdal-dev libglu1-mesa-dev libglw1-mesa-dev libproj-dev libreadline-dev libgeos-c1v5 \
libsqlite3-dev libtiff5-dev libwxgtk3.0-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
proj-bin proj-data python3-numpy python3-six wx-common zlib1g-dev netcdf-bin \
libnetcdf-dev libgegl-dev doxygen python3-sphinx postgresql libgeotiff-dev libblas-dev \
libatlas-dev liblapack3 liblapack-dev opencl-headers ocl-icd-libopencl1 \
subversion liblas-bin liblas-c-dev python3-gdal libpdal-dev libpdal-plugin-python pdal

# ? python3-wxgtk4.0 libmariadb

Download and unpack source code or fetch from GitHub: https://github.com/OSGeo/grass

Configuration:

CFLAGS="-Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused" \
CXXFLAGS="-Wall" \
./configure \
--prefix=/usr/local \
--with-gdal --with-proj --with-proj-share=/usr/share \
--with-glw --with-nls --with-readline \
--with-cxx --enable-largefile \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-sqlite --with-cairo --with-python=/usr/bin/python-config \
--with-wxwidgets --with-geos \
--with-blas --with-blas-includes=/usr/include/atlas/ \
--with-lapack --with-lapack-includes=/usr/include/atlas/ \
--with-netcdf=/usr/bin/nc-config --with-odbc=yes \
--with-openmp=yes --with-pthread=no --with-postgres=yes \
--with-postgres-includes=/usr/include/postgresql \
--with-postgres-libs=/usr/lib/postgresql \
--with-mysql=yes --with-mysql-includes=/usr/include/mysql

Compile:

make -j2

Install:

make install

====== GRASS 7 on Debian Buster ======

-- To be updated --

Install needed packages for GRASS 7.8+ (Python 3 support!):
apt-get install cmake libboost-all-dev flex bison debhelper dpatch autoconf2.13 autotools-dev \
g++ gcc gettext graphviz libcairo2-dev libfftw3-dev libfreetype6-dev libgdal20 python3-dev \
libgdal-dev libglu1-mesa-dev libglw1-mesa-dev libproj-dev libreadline-dev libgeos-c1v5 \
libsqlite3-dev libtiff5-dev libwxgtk3.0-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
proj-bin proj-data python3-numpy python3-six wx-common zlib1g-dev netcdf-bin \
libnetcdf-dev libgegl-dev doxygen python3-sphinx postgresql libgeotiff-dev libblas-dev \
liblapack3 liblapack-dev opencl-headers ocl-icd-libopencl1 \
subversion liblas-bin liblas-c-dev python3-gdal libpdal-dev libpdal-plugin-python pdal \
python3-wxgtk4.0 default-libmysqlclient-dev

Download and unpack source code or fetch from GitHub: https://github.com/OSGeo/grass

Configuration:

CFLAGS="-Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused" \
CXXFLAGS="-Wall" \
./configure \
--prefix=/usr/local \
--with-gdal --with-proj --with-proj-share=/usr/share \
--with-glw --with-nls --with-readline \
--with-cxx --enable-largefile \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-sqlite --with-cairo --with-python=/usr/bin/python-config \
--with-wxwidgets --with-geos \
--with-blas --with-blas-includes=/usr/include/atlas/ \
--with-lapack --with-lapack-includes=/usr/include/atlas/ \
--with-netcdf=/usr/bin/nc-config --with-odbc=yes \
--with-openmp=yes --with-pthread=no --with-postgres=yes \
--with-postgres-includes=/usr/include/postgresql \
--with-postgres-libs=/usr/lib/postgresql \
--with-mysql=yes --with-mysql-includes=/usr/include/mysql

Compile:

make -j2

Install:

make install

===== Ubuntu =====

There is a dedicated page on how to [[Compile_and_Install_Ubuntu | Compile the GRASS GIS source code & install it in Ubuntu]].

===== Linux Mint =====

The [[Compile_and_Install_Ubuntu | detailed compilation guide for Ubuntu]] may just work. Here is a short guide for Mint:
<source lang="bash">
# installation of required libraries and compile tools
sudo apt-get install\
build-essential flex make bison gcc libgcc1 g++ cmake ccache \
python python-dev python-opengl python-wxversion python-wxtools python-wxgtk3.0 python-dateutil \
libgsl-dev python-numpy wx3.0-headers wx-common libwxgtk3.0-dev libwxbase3.0-dev \
libncurses5-dev zlib1g-dev gettext libtiff5-dev libpnglite-dev libcairo2 libcairo2-dev \
sqlite3 libsqlite3-dev libpq-dev libreadline6 libreadline6-dev libfreetype6-dev \
libfftw3-3 libfftw3-dev libboost-thread-dev libboost-program-options-dev \
liblas-c-dev resolvconf libjasper-dev subversion libav-tools libavutil-dev \
ffmpeg2theora libffmpegthumbnailer-dev libavcodec-dev libxmu-dev libavformat-dev \
libswscale-dev checkinstall libglu1-mesa-dev libxmu-dev ghostscript
</source>

Next steps:
* download [https://grass.osgeo.org/download/software/sources/ GRASS GIS source code] (e.g. take the "Weekly 7.x-svn snapshot")
* unpack source code, change into the source code directory

<source lang="bash">
# now "configure" stop to prepare for compilation
CFLAGS="-Wall" ./configure \
--with-cxx --with-gdal \
--with-proj --with-proj-share=/usr/share/proj/ \
--with-geos --without-postgres \
--with-nls --with-opengl-includes=/usr/include/GL/ \
--with-fftw --with-freetype \
--with-freetype-includes=/usr/include/freetype2 --with-sqlite \
--with-python=/usr/bin/python2.7-config --with-wx=/usr/bin/wx-config \
--with-wxwidgets --with-cairo --enable-largefile

# compile GRASS GIS
make -j2

# install compiled GRASS GIS on system
sudo make install
</source>

===== Mandriva =====

Installation of dependencies (urpmi will ask you a few more):

'''Mandriva 2009:''' (take out the '64' everywhere if you are on 32bit)
# as root
urpmi flex bison zlib-devel tiff-devel png-devel tcl-devel tk-devel sqlite3-devel \
mesagl1-devel mesaglu1-devel lib64xmu6-devel gcc-c++ gettext \
lib64wxgtk2.8 lib64wxgtk2.8-devel lib64wxgtkgl2.8 wxgtk2.8 \
lib64wxPythonGTK2.8 lib64wxPythonGTK2.8-devel wxPythonGTK wxPythonGTK-wxversion
exit

'''Mandriva 2010:''' (take out the '64' everywhere if you are on 32bit) - see also [http://svn.mandriva.com/cgi-bin/viewvc.cgi/packages/cooker/grass/current/SPECS/ SPEC] file
# as root
# installation of PROJ and GDAL
urpmi proj proj-devel gdal gdal-devel gcc-gfortran lib64openssl1.0.0 \
lib64openssl1.0.0-devel postgresql8.4-devel lib64pq8.4

# installation of compilation environment
urpmi flex bison zlib-devel tiff-devel png-devel tcl-devel tk-devel sqlite3-devel \
lib64mesagl1-devel lib64mesaglu1-devel lib64xmu6-devel gcc-c++ gettext \
lib64wxgtk2.8 lib64wxgtk2.8-devel lib64wxgtkgl2.8 wxgtk2.8 \
lib64wxPythonGTK2.8 lib64wxPythonGTK2.8-devel wxPythonGTK wxPythonGTK-wxversion
exit

Then, to configure GRASS, run (64 bit stuff optional of course):
# as user
./configure \
--enable-64bit --with-libs=/usr/lib64 \
--with-cxx \
--with-gdal=/usr/local/bin/gdal-config \
--with-sqlite \
--with-nls \
--with-python \
--with-wxwidgets=/usr/lib/wxPython/bin/wx-config \
--with-fftw \
--with-ffmpeg --with-ffmpeg-includes="/usr/include/libav* /usr/include/libpostproc /usr/include/libswscale" \
--with-motif \
--with-mysql --with-mysql-includes=/usr/include/mysql --with-mysql-libs=/usr/lib64 \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--enable-largefile

# compilation (use -j2 ior -j4 parameter on multi-core CPUs to accelerate):
make

Installation:
su
# this will install into /usr/local/
make install
exit

===== Enterprise Linux =====

Enterprise Linux (EL) and derivatives (that is, Red Hat Enterprise Linux, CentOS and Scientific Linux) is a popular and robust platform for servers and computing-heavy workstations, and is therefore a good fit for GIS specific requirements.

See: http://wiki.osgeo.org/wiki/Enterprise_Linux_GIS

===== Scientific Linux =====

See Centos

===== CentOS =====

You first need to add the EPEL repository for PROJ.4 and GDAL, see [https://fedoraproject.org/wiki/EPEL/FAQ#How_can_I_install_the_packages_from_the_EPEL_software_repository.3F here]

<strike>
Preparation '''Centos 5''' (old):
yum install epel-release

# Note: CentOS 5 comes with Python 2.4 which lacks python-config, hence two extra tweaks are needed.
yum install flex bison zlib-devel tcl-devel tk-devel gcc-c++ gettext \
libtiff-devel libpng-devel sqlite-devel \
mesa-libGL-devel mesa-libGLU-devel mesa-libGLw-devel \
mesa-libOSMesa-devel libXmu-devel python-devel gtk2-devel\
ncurses-devel postgresql-devel make
</strike>

Preparation '''Centos 6''' | '''Scientific Linux 6''':
yum install epel-release

yum install flex bison make zlib-devel gcc-c++ gettext \
sqlite-devel mesa-libGL-devel mesa-libGLU-devel \
libXmu-devel libX11-devel fftw-devel libtiff-devel \
lesstif-devel python-devel numpy wxPython wxGTK-devel \
proj proj-devel proj-epsg proj-nad libxml2 gdal gdal-devel geos geos-devel \
python-dateutil python-imaging python-matplotlib python-argparse
# only GRASS GIS 6: install also tcl-devel tk-devel

Preparation '''Centos 7''' | '''Scientific Linux 7''':
yum install epel-release

yum install flex bison make zlib-devel gcc-c++ gettext \
sqlite-devel mesa-libGL-devel mesa-libGLU-devel \
libXmu-devel libX11-devel fftw-devel libtiff-devel \
lesstif-devel python-devel numpy wxPython wxGTK-devel \
proj proj-devel proj-epsg proj-nad libxml2 gdal gdal-devel geos geos-devel \
netcdf netcdf-devel blas-devel lapack-devel atlas-devel \
python-dateutil python-imaging python-matplotlib python-sphinx \
doxygen subversion

Preparation '''Centos 8''' | '''Scientific Linux 8''':
dnf install epel-release

Note, GDAL isn't yet in EPEL8, see https://bugzilla.redhat.com/show_bug.cgi?id=1741567
dnf install flex bison make zlib-devel gcc-c++ gettext \
sqlite-devel mesa-libGL-devel mesa-libGLU-devel \
libXmu-devel libX11-devel fftw-devel libtiff-devel \
python3-devel python3-numpy wxGTK3-devel \
proj proj-devel proj-datumgrid libxml2 \
geos geos-devel \
netcdf netcdf-devel atlas-devel \
python3-dateutil python3-imaging python3-matplotlib \
subversion --skip-broken

GDAL is available on Fedora COPR here: https://copr.fedorainfracloud.org/coprs/neteler/GDAL/builds/
dnf copr enable neteler/GDAL
dnf update
dnf install gdal gdal-libs gdal-python-tools python3-gdal gdal-devel

'''GRASS GIS 7 compilation and installation'''

[https://grass.osgeo.org/grass-stable/source/snapshot/ Download source code] (e.g., --> "Download latest 7.8 code)" and configure GRASS 7 (suggestion: save this as script):

./configure \
--with-cxx \
--enable-largefile \
--with-proj --with-proj-share=/usr/share/proj \
--with-gdal=/usr/bin/gdal-config \
--with-sqlite \
--with-python \
--with-cairo --with-cairo-ldflags=-lfontconfig \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-wxwidgets=/usr/bin/wx-config \
--with-openmp \
--with-blas --with-blas-includes=/usr/include/atlas-x86_64-base/ \
--with-lapack --with-lapack-includes=/usr/include/atlas-x86_64-base/ \
--with-fftw \
--with-geos \
--with-netcdf \
--without-ffmpeg \
--without-mysql \
--without-postgres \
--without-odbc \
--without-fftw

Compile:
make
or on a multicore system (number depends of available cores):
make -j4

For a system wide installation, run as root user:
make install
OR simply run it directly from the source code directory (substitute ARCH with i686 or x86_64):

bin.$ARCH/grass78 -gui

In this case, for convenience, add it to the search path:
mkdir $HOME/bin
cd $HOME/bin
# example:
ln -s $HOME/software/grass78_release/bin.i686-pc-linux-gnu/grass78 .

Now use it subsequently with
grass78 -gui

'''Installation grass78 on a HPC system with '''Centos 7''' and no root privileges:'''
This assumes that python3, fftw, proj, gdal and geos are available on the HPC system, either as modules or as installed software.

Download and prepare some dependencies (freetypes and zstd)
mkdir -p $HOME/grass/freetypes
cd $HOME/grass/freetypes
wget path/to/freetype-2.9.1.tar.gz
tar -xf freetype-2.9.1.tar.gz

mkdir $HOME/grass/zstd
cd mkdir $HOME/grass/zstd
wget path/to/v1.4.4/zstd-1.4.4.tar.gz
tar -xf zstd-1.4.4.tar.gz
make install PREFIX=./

Add the ZSTD path to your LD_LIBRARY_PATH

tee -a $HOME/.bashrc > /dev/null << EOT
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$HOME/grass/zstd/zstd-1.4.4/lib
EOT

The configure command could look like this
./configure \
-prefix=$HOME/grass \
--enable-64bit --with-fftw-includes=/path/to/fftw/include/ \
--with-fftw-libs=/path/to/fftw/lib/ \
--with-freetype-includes=$HOME/grass/freetypes/freetype-2.9.1/include/ \
--with-netcdf --with-geos --with-blas --with-lapack --with-postgres \
--with-zstd-includes=$HOME/grass/zstd/zstd-1.4.4/lib/ \
--with-zstd-libs=$HOME/grass/zstd/zstd-1.4.4/lib/ \
--with-gdal=/path/to/gdal-config # This could be the path to a gdal version compiled from source

Finally usual:
make; make install

===== Gentoo =====

./configure \
--with-freetype=yes --with-freetype-includes="/usr/include/freetype2/"

See also http://packages.gentoo.org/package/sci-geosciences/grass

===== Funtoo =====

{{MovedToTrac|FuntooLinux}}

===== Fedora =====

====== GRASS GIS 6 on Fedora ======

'''Preparation''' for the compilation of GRASS GIS 6 source code (F16-F21):

yum install proj-devel gdal-devel sqlite-devel ffmpeg-devel mesa-libGL-devel \
mesa-libGLU-devel libXmu-devel libX11-devel tcl-devel tk-devel geos \
fftw-devel libtiff-devel lesstif-devel python-devel numpy wxPython wxGTK-devel \
gcc gcc-c++ bison flex ncurses-devel proj-epsg proj-nad xml2 subversion

''Note 1: that currently gdal-devel has (too) many dependencies and may lead to a massive download of extra packages (200 on a fresh Fedora 16 install). Hopefully solved in later Fedora versions.''

''Note 2: the optional ffmpeg-devel comes from the rpmfusion-free repository ([http://rpmfusion.org/Configuration/ configuration]).''

'''Download''' the source code:
* GRASS GIS 6: [http://grass.osgeo.org/download/software/sources/ release package] - [http://grass.osgeo.org/grass64/source/snapshot/ weekly snapshot] - [http://trac.osgeo.org/grass/wiki/DownloadSource#GRASS6.4 SVN repository]

'''Configure''': This is an ''example'' how to configure the source code on a Fedora system:

./configure \
--with-cxx \
--with-gdal=/usr/bin/gdal-config \
--with-proj --with-proj-share=/usr/share/proj \
--with-sqlite \
--with-nls \
--with-geos \
--with-wxwidgets=/usr/bin/wx-config \
--with-python=/usr/bin/python-config \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--enable-largefile \
--without-odbc \
--with-fftw

Extra: If you also want '''FFMPEG''' support - it requires 'yum install fftw-devel'. Then add to the configuration lines above:

--with-ffmpeg --with-ffmpeg-includes="/usr/include/ffmpeg /usr/include/ffmpeg/libav* /usr/include/ffmpeg/libpostproc /usr/include/ffmpeg/libswscale" \

Finally '''compile''' the configured source code:
make
or on multicore (number depends of available cores):
make -j4
and
make install # requires root permissions unless you become owner of /usr/local/

Then use GRASS GIS 6 and enjoy!

====== GRASS GIS 7 on Fedora ======

'''Preparation''' for the compilation of GRASS GIS 7.8+ source code (F20-F30):

dnf install gcc gcc-c++ bison flex ncurses-devel gettext proj-epsg proj-devel proj-nad \
gdal gdal-devel sqlite-devel xml2 mesa-libGL-devel \
fftw-devel mesa-libGLU-devel libXmu-devel libX11-devel geos geos-devel \
libtiff-devel python3-devel numpy wxPython wxGTK3-devel subversion \
python3-dateutil python3-imaging python3-matplotlib-wx doxygen python3-sphinx \
libzstd-devel libzstd python3-six python3-numpy python3-wxpython4 \
proj-datumgrid proj-datumgrid-europe proj-datumgrid-north-america proj-datumgrid-world proj-datumgrid-oceania

# optionally also: netcdf-devel postgresql-devel
# atlas-devel lapack-devel lapack-devel
# laszip laszip-devel

''Note 1: the optional ffmpeg-devel comes from the rpmfusion-free repository ([http://rpmfusion.org/Configuration/ configuration]).''

'''Download''' the source code:
* GRASS GIS 7: [https://grass.osgeo.org/grass78/source/snapshot/ weekly snapshot] - [http://trac.osgeo.org/grass/wiki/DownloadSource#GRASS7 GitHub repository]

'''Configure''': This is an example how to configure the source code on a Fedora system:

./configure \
--with-cxx \
--with-gdal=/usr/bin/gdal-config \
--with-proj --with-proj-share=/usr/share/proj \
--with-geos \
--with-sqlite \
--with-nls \
--with-wxwidgets=/usr/bin/wx-config \
--with-fftw \
--with-cairo --with-cairo-ldflags=-lfontconfig \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--enable-largefile \
--without-odbc

''Extra 1:'' If you also want '''FFMPEG support''' - it requires 'dnf install fftw-devel' from the rpmfusion-free repository. Then add to the configuration lines above:

--with-ffmpeg --with-ffmpeg-includes="/usr/include/ffmpeg /usr/include/ffmpeg/libav* /usr/include/ffmpeg/libpostproc /usr/include/ffmpeg/libswscale" \

''Extra 2:'' For '''LAPACK/BLAS support''' (addons i.spec.unmix, v.kriging etc), install "dnf install lapack lapack-devel blas blas-devel atlas atlas-devel". Then add to the configuration lines above:
--with-blas --with-blas-includes=/usr/include/atlas-x86_64-base/ \
--with-lapack --with-lapack-includes=/usr/include/atlas-x86_64-base/ \

''Extra 3:'' For '''ZSTD support''' (Zstandard compression algorithm), first install "dnf install libzstd libzstd-devel zstd". After installing the zstd related packages, add to the configuration lines above:
--with-zstd \

Finally '''compile''' the configured source code:
make
or on multicore (number depends of available cores):
make -j4
and
make install # requires root permissions unless you become owner of /usr/local/

Then use GRASS GIS 7 and enjoy!

===== openSUSE =====

To build GRASS on openSUSE:

''Application:Geo'' repo to be added (see [https://software.opensuse.org//download.html?project=Application%3AGeo&package=gdal Install package Application:Geo]

<source lang="bash">
# example for Leap 42 version:
sudo zypper addrepo http://download.opensuse.org/repositories/Application:Geo/openSUSE_Leap_42.3/Application:Geo.repo
sudo zypper refresh
</source>

RPM packages to be installed:
<source lang="bash">
sudo zypper install bison flex freetype2-devel fftw3-devel gcc-c++ \
libgdal-devel libgeos-devel libjpeg-devel libpng-devel libtiff-devel \
man proj libproj-devel readline-devel netcdf-devel ncurses-devel \
mysql-devel postgresql-devel sqlite-devel unixODBC-devel \
tcl-devel tk-devel xorg-x11-Mesa-devel libXmu-devel \
python-numpy python-dateutil python-devel python-opengl \
python-wxWidgets python-xml python-dateutil wxWidgets-devel \
zlib-devel doxygen python-sphinx
</source>

Source code configuration:
<source lang="bash">
./configure \
--enable-largefile \
--with-proj-share=/usr/share/proj \
--with-cxx \
--with-lapack=yes \
--with-x \
--with-motif \
--with-gdal=/usr/bin/gdal-config \
--with-postgres --with-postgres-includes=/usr/include/pgsql \
--with-mysql --with-mysql-includes=/usr/include/mysql \
--with-fftw \
--with-readline \
--with-netcdf \
--with-curses \
--with-geos \
--with-nls \
--with-sqlite \
--with-freetype \
--with-freetype-includes=/usr/include/freetype2 \
--with-wxwidgets \
--with-odbc \
--with-python
</source>

Then compile with "make [-j2]".

===== Arch Linux =====

Up-to-date links to Arch Linux GRASS PKGBUILDs are on https://grass.osgeo.org/download/software/linux/.

But if you want to compile it yourself, you have to keep in mind that in Arch Linux the default Python version 3.

python --version

Python 3.3.1

Therefore, to build GRASS GIS (version 7 in this example), we can use either use virtualenv or symlink python2 and python2-config in a given directory.
Let's use the latter approach

sudo ln -s /usr/bin/python2 $HOME/usr/bin/python
sudo ln -s /usr/bin/python2-config $HOME/usr/bin/python-config

We can now start building GRASS 7

export PATH=~/usr/bin:$PATH && \
./configure \
--enable-debug \
--enable-64bit \
--with-libs=/usr/lib64 \
--with-cxx \
--with-readline \
--with-zlib-includes="/usr/include/" \
--with-freetype=yes \
--with-freetype-includes="/usr/include/freetype2/" \
--enable-largefile=yes \
--with-gdal=/usr/bin/gdal-config \
--with-proj-share=/usr/share/proj/ \
--with-geos=/usr/bin/geos-config \
--with-cairo \
--with-odbc \
--with-pthread \
--with-liblas=/usr/local/bin/liblas-config \
--with-fftw-includes="/usr/include/" \
--with-fftw-libs=/usr/lib/ \
--with-tcltk-includes="/usr/include/" \
--with-wxwidgets \
--with-postgres=yes \
--with-postgres-includes="/usr/include/postgresql/internal" \
--with-postgres-libs="/usr/include/postgresql/internal/libpq" \
--with-sqlite=yes \
--with-python=yes \
--with-liblas \
--with-netcdf

Now let's compile and install it

make
sudo make install

Now the final step required to use GRASS with python2 is to create a bash script "grass" (or the name you want)

#!/bin/bash
export PATH=~/usr/bin:$PATH
python2 /usr/local/bin/grass72

And make it executable and copy it somewhere in the PATH

chmod+x grass
sudo cp grass /usr/local/bin

It's done, you can enjoy GRASS 7 in Arch, just type "grass" (or the name you gave to the script) in the terminal to launch it.

===== RPM SPEC files =====
* [https://build.opensuse.org/package/show?package=grass&project=Application%3AGeo OpenSuSe]
* [http://pkgs.fedoraproject.org/cgit/rpms/grass.git/tree/grass.spec Fedora]
* ...

===== Zaurus =====

... see [http://wiki.debian.org/?GrassGISonZaurus here] for instructions

==== Mac OSX ====

===== Compilation and installation =====
* [[Compiling on MacOSX using homebrew]]
* [[Compiling on MacOSX]] (rather outdated)
* [[Compiling on MacOSX using Fink]] (rather outdated)
* [https://grass.osgeo.org/download/software/mac-osx/ official download site]
* [http://www.kyngchaos.com/software/frameworks#build_scripts build scripts for dependencies] (still relevant?)

Troubleshooting:
* solving errors at starting GRASS GIS: [[MacOSX GRASS errors]]

==== FreeBSD / NetBSD ====

The recommended compiler tools are GCC, GNU make, GNU coreutils (for install), and flex. All are available through the respective package managing tools (pkg_add for FreeBSD and pkgin install for NetBSD) and for recent *BSD versions most likely installed by default.

GRASS 6.x and GRASS 7 should compile on FreeBSD 8.0 or later and NetBSD 5.0 or later (maybe also on updated NetBSD 4.x).

It is highly recommended to install GDAL/OGR and PROJ4 first. These libraries and tools are available as [http://www.freebsd.org/ports/ ports for FreeBSD] and [http://www.pkgsrc.org/ packages for NetBSD].

Optional functionality is listed with ''./configure --help'', and related libraries and tools might need to be installed first.

You then may need to edit include/Make/Platform.make and set
ICONVLIB = -liconv

==== Solaris ====

* ''2008 Oct 15'': see [http://lists.osgeo.org/pipermail/grass-user/2008-October/047093.html this post on the grass mailing list]

===== 11 SPARC/i86pc =====

The recommended compiler tools are GCC, GNU make, GNU coreutils (for install), and flex. All are available through the Solaris package manager.

Most dependencies are available through the Solaris package manager. GDAL and proj4 can either be compiled from source or installed e.g. from [http://www.opencsw.org/ OpenCSW]. If packages are installed from OpenCSW, the linker flags need to be set with

LDFLAGS="-Wl,-R/opt/csw/lib -L/opt/csw/lib -Wl,-R/opt/csw/gxx/lib -L/opt/csw/gxx/lib"

See also the [http://www.opencsw.org/use-it/ OpenCSW documentation].

===== 10 SPARC/i86pc =====

* get gcc compiler and tools. There are several sources: Solaris Companion CD (SFW pkg, installs in /opt/sfw/), Blastwave ([http://www.blastwave.org], CSW pkg, installs in /opt/csw/) or Sunfreeware ([http://www.sunfreeware.com], SMC pkg, installs in /usr/local/).
Needed Packages from Sunfreeware: SMCbinut, SMCbison, SMCcoreu, SMCfindu, SMCflex, SMCgawk, SMCgcc, SMCgrep, SMCgzip, SMCless, SMClibt, SMClicon, SMCmake, SMCncurs, SMCproj, SMCsed, SMCtar, SMCtcl, SMCtiff, SMCtk, SMCunzip, SMCzlib.

* compile and install fftw-library ([http://www.fftw.org]). You need to re-compile the library with:

./configure --with-pic --enable-shared; make ; make install.

The pre-built packages don't work.

* compile and install gdal library (see documentation of gdal, [http://www.gdal.org]).

* compile and install any additional libraries (e. g. GEOS, [http://geos.refractions.net]).

* set compiler flags and path. e. g.:

# on ultra-sparc machine:
CFLAGS="-O3 -mcpu=v9"
CXXFLAGS="-O3 -mcpu=v9"
PATH="/usr/local/bin:/opt/sfw/bin:/usr/ccs/bin:/usr/bin:/usr/sbin"
export CFLAGS CXXFLAGS PATH

Path has to be changed for the packages (Sunfreeware: /usr/local/bin, Solaris Companion: /opt/sfw/bin, Blastwave: /opt/csw/bin).

* Next configure, e. g.:

./configure --with-postgres-includes=/usr/include/pgsql/ \
--with-postgres-libs=/usr/lib --with-postgres=yes \
--with-includes=/usr/local/include/ncurses

If you use n(ew)curses, you have to include the path /usr/local/include/ncurses.

then:

make
su
make install

If the shared libraries are not found at runtime of the modules, use 'crle' to add the paths of the libraries for the dynamic linker, e. g. as root:

crle -l /lib:/usr/lib:/usr/local/lib:/opt/sfw/lib:/usr/X11/lib

Be careful not to omit a library path, the system may be unusable if you forget the /lib path.

==== AIX ====

A recent [ftp://ftp.gnu.org/gnu/make/ GNU make] (>= 3.81) and GNU coreutils are required. These are available with the [http://www-03.ibm.com/systems/power/software/aix/linux/toolbox/download.html IBM AIX toolbox] or through third-party AIX software repositories, e.g. [http://www.bullfreeware.com/ bullfreeware] and [http://www.perzl.org/aix/ perzl.org]. Note that 'make' does not work, only 'gmake' works.

General instructions to compile on AIX are e.g. [http://www.perzl.org/aix/index.php?n=Main.Instructions here]

On AIX, compilation results by default in 32 bit applications and static libraries. The [http://www.ibm.com/developerworks/aix/library/au-gnu.html IBM documentation] explains how to build 64 bit applications and shared libraries with GCC.

'''GRASS 6: Using the IBM xlc compiler:'''
* ''see [http://thread.gmane.org/gmane.comp.gis.grass.user/32667 this mailing list thread]''

Mike wrote in 2009:

After attempting all the suggestions, I finally used
--disable-shared on the configure command, and all but
a handful of modules successfully compiled. I was able to
individually address the ones that failed through Makefile
edits and several small source code/header file edits.

The environment variables and configure command that worked were:
<pre>
# xlc compiler:
export PATH=/usr/local/bin:/opt/freeware/bin:$PATH
export OBJECT_MODE=64
export LIBICONV=/opt/freeware
export CC="xlc_r -q64"
export CFLAGS="-O -qstrict"
export CXX="xlC_r -q64"
export CXXFLAGS="-O -qstrict"
export AR="ar -X64"
export F77="xlf_r -q64"
export CPPFLAGS="-I/afs/isis/pkg/libpng/include -I/usr/local/include -I$LIBICONV/include -I/usr/lpp/X11/include/X11"
export LDFLAGS="-L/usr/local/lib -L$LIBICONV/lib -L/usr/lib -L/usr/X11R6/lib -lc"

./configure --prefix=/afs/isis/pkg/grass-6.4.0 \
--enable-64bit \
--disable-shared \
--with-includes="/usr/include/fontconfig /usr/include/X11 /usr/include/X11/Xft /usr/include/X11/ext" \
--x-includes=/usr/include/X11 \
--x-libraries=/usr/X11R6/lib \
--with-fftw-includes=/afs/isis/pkg/fftw-3.2.2/include \
--with-fftw-libs=/afs/isis/pkg/fftw-3.2.2/lib \
--with-gdal=/afs/isis/pkg/gdal/bin/gdal-config \
--with-proj-includes=/afs/isis/pkg/proj/include \
--with-proj-libs=/afs/isis/pkg/proj/lib \
--with-proj-share=/afs/isis/pkg/proj/share/proj \
--with-tcltk-includes=/usr/local/include \
--with-tcltk-libs=/usr/local/lib \
--with-opengl-includes=/usr/include/GL
</pre>

'''GRASS 7: Using the IBM xlc compiler:'''

Get and install (in this order):
* [ftp://ftp.gnu.org/gnu/tar/ GNU tar]
* [ftp://ftp.gnu.org/gnu/make/ GNU make] (>= 3.81)
* [http://www.sqlite.org SQLite]
* [http://trac.osgeo.org/proj/ PROJ.4] (for ./configure parameters, see [[Talk:Compile and Install|here]])
* [http://www.gdal.org GDAL] (for ./configure parameters, see [[Talk:Compile and Install|here]])
* [http://grass.osgeo.org/grass74/source/snapshot/ GRASS GIS 7]

The environment variables and configure command that worked:
<pre>
## AIX 5.x

export LIBPATH=/opt/freeware/lib64:/opt/freeware/lib
# make 'ar' happy
export OBJECT_MODE=64

PREFIX=$HOME/private/bin
./configure \
--prefix=$PREFIX \
--disable-shared \
--enable-largefile \
--with-cxx \
--with-proj-includes=$PREFIX/include/ \
--with-proj-libs=$PREFIX/lib/ \
--with-proj-share=$PREFIX/share/proj/ \
--with-sqlite \
--with-sqlite-includes=$PREFIX/include/ \
--with-sqlite-libs=$PREFIX/lib/ \
--with-tiff=no \
--with-png=no \
--with-fftw=no \
--with-cairo=no \
--with-freetype=no
</pre>

'''GRASS 7: Using the GNU gcc compiler:'''

Get and install (in this order):
* if needed, [ftp://ftp.gnu.org/gnu/tar/ GNU tar]
* if needed (the name is often 'gmake' and not 'make') [ftp://ftp.gnu.org/gnu/make/ GNU make] (>= 3.81)
* [http://www.sqlite.org SQLite]
* [http://trac.osgeo.org/proj/ PROJ.4] (for ./configure parameters, see [[Talk:Compile and Install|here]])
* [http://www.gdal.org GDAL] (for ./configure parameters, see [[Talk:Compile and Install|here]])
* [http://grass.osgeo.org/grass74/source/snapshot/ GRASS GIS 7]

The environment variables and configure command that worked for AIX 5.x:
<pre>
## AIX 5.x

export LIBPATH=/opt/freeware/lib64:/opt/freeware/lib
# make 'ar' happy
export OBJECT_MODE=64

PREFIX=$HOME/private/bin
CFLAGS='-ansi -D_ALL_SOURCE=1 -D_POSIX_SOURCE=1 -D_POSIX_C_SOURCE=200809L -Dinline=' ./configure \
--prefix=$PREFIX \
--disable-shared \
--enable-largefile \
--with-cxx \
--with-proj-includes=$PREFIX/include/ \
--with-proj-libs=$PREFIX/lib/ \
--with-proj-share=$PREFIX/share/proj/ \
--with-sqlite \
--with-sqlite-includes=$PREFIX/include/ \
--with-sqlite-libs=$PREFIX/lib/ \
--with-tiff=no \
--with-png=no \
--with-fftw=no \
--with-cairo=no \
--with-freetype=no
</pre>

The environment variables and configure command that worked for AIX 7.x:
<pre>
## AIX 7.x
export CC="gcc"
export CXX="g++"
PREFIX=$HOME/bin

LDFLAGS="-Wl,-bsvr4,-R,/opt/freeware/lib -L/opt/freeware/lib" CPPFLAGS="-I/opt/freeware/include" ./configure \
--prefix=$PREFIX \
--enable-largefile \
--enable-shared \
--with-includes=/opt/freeware/include --with-libs=/opt/freeware/lib \
--with-cxx \
--with-proj-includes=$PREFIX/include/ \
--with-proj-libs=$PREFIX/lib/ \
--with-proj-share=$PREFIX/share/proj/ \
--with-gdal=$PREFIX/bin/gdal-config \
--with-sqlite \
--with-sqlite-libs=$PREFIX/lib --with-sqlite-includes=$PREFIX/include \
--with-png=no \
--with-tiff=no \
--with-fftw=no \
--with-cairo=no \
--with-opengl=no \
--with-freetype=no
</pre>

==== MS-Windows ====

===== MS-Windows/Cygwin =====

* See the [[Cygwin]] wiki pages

===== MS-Windows/native =====

====== Compile ======

* [http://trac.osgeo.org/grass/wiki/CompileOnWindows GRASS Windows Native Binary Building Guide] (GRASS 6.4.x + 7.x)
* <strike>[http://www.webalice.it/marco.pasetti/grass/BuildFromSource.html GRASS Windows Native Binary Building Guide] (GRASS 6.3.x) </strike>
* See/adapt [http://blog.qgis.org/node/124 idea] for unattended install of QGIS (et al) from [http://trac.osgeo.org/osgeo4w/ OSGeo4W] from the QuantumGIS Blog.

See also [[WinGRASS Current Status]] for latest updates.

=== Common problems and solutions ===

During compilation, error can occur if certain packages are not installed. Here a list of problems with solution:

* error: X11/Xlib.h: No such file or directory
** this suggests that you don't have the X headers installed
** Solution: Install the libx11-dev package

* error: g.list: error while loading shared libraries: libgdal1.6.0.so.1: cannot open shared object file: No such file or directory
** this error appears in the shell right after the user clicks GUI's "Start GRASS" button. The GUI shows an error about geographic extent and gets closed afterwards.
** It happens when you launch bin.i686 executable on 64bit system. Be careful and choose the right architecture.

=== Static compilation ===

In order to get static rather than dynamically linked binaries, configure like this:

./configure --disable-shared --enable-static

This will however break the wxGUI and GRASS 7 completely because "ctypes" wants to link against shared libs, or there is something in the static libs that "ctypes" does not like.

=== Optimization ===

GCC and other compilers support [http://gcc.gnu.org/onlinedocs/gcc-4.3.3/gcc/Optimize-Options.html#Optimize-Options optimization]

If you would like to set compiler optimisations, for a possibly faster binary, type (don't enter a ";" anywhere):

CFLAGS=-O ./configure
or,
setenv CFLAGS -O
./configure

whichever works on your shell. Use -O2 instead of -O if your compiler supports this (note: O is the letter, not zero). Using the "gcc" compiler, you can also specify processor specific flags (examples, please suggest better settings to us):

CFLAGS="-mcpu=athlon -O2" # AMD Athlon processor with code optimisations
CFLAGS="-march=amdfam10" # AMD Phenom II X4 64bit processor with gcc >=4.3
CFLAGS="-mcpu=pentium" # Intel Pentium processor
CFLAGS="-mcpu=pentium4" # Intel Pentium4 processor
CFLAGS="-O2 -msse -msse2 -mfpmath=sse -minline-all-stringops" # Intel XEON 64bit processor
CFLAGS="-mtune=nocona -m64 -minline-all-stringops" # Intel Pentium 64bit processor

To find out optional CFLAGS for your platform, enter:
gcc -dumpspecs

See also: http://gcc.gnu.org/

A real fast GRASS version (and small binaries) will be created with LDFLAGS set to "stripping" (but this disables debugging):

CFLAGS="-O2 -mcpu=<cpu_see_above> -Wall" LDFLAGS="-s" ./configure

=== Configure options and their meanings ===

For configure there are many options and some GRASS modules are built only if some options are set. Here are listed common configuration options with short explanation.

* --prefix=/path - Sets path where GRASS will be installed. GRASS will reside in /path/grass-version.
* --enable-largefile - Enables large (>2Gb on 32bit systems) support. For current large file support status look at [[Large File Support]] page.
* --with-cxx - Enables compilation of C++ code. Required for r.terraflow module.
* --with-readline - Enables readline support. If readline is enabled, you can use its history/editing facilities when entering r.mapcalc expressions on stdin.
* --with-glw - Enables GLw support. The GLw library provides OpenGL "canvas" widgets for Athena and Motif.

That switch is unnecessary for normal compilation. It's only
required for r3.showdspf, which isn't normally built; if you
want it, you have build it manually
(e.g. "make -C raster3d/r3.showdspf").
As similar functionality is now provided by NVIZ, r3.showdspf
is deprecated.
r3.showdspf uses the Motif widget (so you also need a
Motif library, e.g. Lesstif or OpenMotif).
[http://grass.itc.it/pipermail/grassuser/2006-December/037475.html Glynn Clements at GRASS-user mailing list]

=== Parallelized compilation on multi-core CPUs ===

You can dramatically accelerate the compilation of the GRASS code with the -j flag of "make" if you have a multi-core CPU system. This determines the maximum number of jobs to have running at once, so cores don't have to sit idle waiting for jobs on other cores to complete. A good rule of thumb for this value is <tt>number_of_cores * 1.5</tt>, but note that setting any higher than the actual number of cores will only affect the timing slightly. For example, on a dual-core processor:
make -j 4



== GRASS-GDAL plugin ==

* see [[Compile and install GRASS and QGIS with GDAL/OGR Plugin]]

== Addons ==

Please note that the installation of [[AddOns/GRASS_6|Addons]] can be easily done with the {{cmd|g.extension}} manager. The compile instructions below are aiming at own development.

=== Compiled modules ===

This is the general way which works for C modules as well as scripts (Python or Shell/Bash modules) which has HTML documentation.

'''Requirements:'''

Either:
* a binary GRASS package, or
* source code which has been prepared with:
./configure [opionally flags]
make libs

Each of the [[GRASS_AddOns|addon]] modules should come with a Makefile. To compile it, just run:
make MODULE_TOPDIR=/path/to/grass64/

Note that the <tt>/path/to/grass64</tt> has to be absolute, not relative.

If using Bash it may be useful to set that up as an alias:
alias gmake64='make MODULE_TOPDIR=/path/to/grass64/'

Installation (perhaps requires "sudo"):
make MODULE_TOPDIR=/path/to/grass64/ install

Note: Compiled addons may require a re-compilation if you changed/updated your GRASS standard binaries.

==== If binary comes with a -dev package ====

''(work in progress, this text states how it eventually will be :)''
Nowadays one does not need to the source code, nor compiling GRASS by oneself to be able to add add-ons. On Debian, you can just install the grass-dev package and then run:
make MODULE_TOPDIR=/usr/lib/grass64/ INST_DIR=/usr/lib/grass64/

The grass-dev package essentially provides GRASS's <tt>include</tt> header files and Make configuration files.

=== Scripts ===

If the addon module is a script, it is sufficient to copy it into the (GRASS binaries) path somewhere. Alternatively, install addons into a separate GRASS addons binaries/scripts directory which is easier to maintain. It avoids getting clobbered every time you reinstall GRASS. To use these separately stored scripts, set and export the GRASS_ADDON_PATH environment variable before starting GRASS and it will automatically be added to the module search path (see the {{cmd|variables}} help page). To simplify this, do for example:

# add in $HOME/.bashrc:
GRASS_ADDON_PATH=/usr/local/grass/addons/
export GRASS_ADDON_PATH

Make sure that the script is executable, then just call it in GRASS typing the filename. Python scripts need to be called writing the extension as well, like:

GRASS 6.5.svn (spearfish60):~ > v.krige.py

[[Category:Development]]
[[Category:Documentation]]
[[Category:Installation]]

Compile and Install

2020-05-17T20:36:30Z

⚠️Landa: /* Generic procedure for Debian-based distributions (Ubuntu, ...) */

'''Disclaimer''': This page explains how to turn the GRASS GIS source code into an installable binary package ("compilation") for different operating systems. If you just want to get ready-to-use binaries, go [https://grass.osgeo.org/download/ here], otherwise read on...

== How to do compilation and installation of GRASS GIS? ==

Here we explain the procedure to compile GRASS from GitHub, but it also applies to official GRASS 7 releases.

''For installation of precompiled binary packages, see the main [[Installation Guide]].''

For detailed information on compilation, please see the [https://github.com/OSGeo/grass/blob/master/INSTALL INSTALL] file in the source code.

=== Prerequisites ===

==== Extra libraries ====
GRASS GIS needs at least two extra libraries: PROJ and GDAL/OGR. It is recommended to download them as ready-to-use packages for your software platform (Linux distribution, Windows, Mac...).

Other libraries needed to run GRASS are listed on the [http://htmlpreview.github.io/?https://github.com/OSGeo/grass/blob/master/REQUIREMENTS.html requirements page].

To compile, you will also need the respective "-devel" packages; see below for details.

==== Download GRASS GIS source code ====

First, [https://grass.osgeo.org/download/software/sources/ download the GRASS GIS source code].

=== Generic Compilation and installation procedure ===

* It is wise that compilation processes are carried out as a normal user: If you want to get the source code in a place where you do not have write permissions (e.g. in /usr/local/src/) just follow this:
cd /usr/local/src/
su -c 'mkdir grass7'
su -c 'chown yourlogin:yourgroup grass7'

Otherwise if you have permissions just continue as a normal user:
mkdir $HOME/src
cd $HOME/src/
git clone https://github.com/OSGeo/grass.git grass_master

* run configure with parameters to adapt the compile process to your own system. To see what options can be passed to it, run:
./configure --help | less


It may (!) look like this:

./configure \
--with-cxx \
--with-sqlite \
--with-python \
--with-geos \
--with-gdal=/usr/bin/gdal-config \
--with-cairo --with-cairo-ldflags=-lfontconfig \
--with-freetype \
--with-freetype-includes=/usr/include/freetype2 \
--with-proj --with-proj-share=/usr/share/proj

You may have to explicitly state the path for certain packages (i.e., gdal). The Unix 'locate' command will come in handy for finding the path of the package you need (you may have to run locate as root ex: sudo locate gdal-config).

Please note that the paths mentioned may widely vary due to the distribution used.
See [[Compile_and_Install#Platform_Specific_Notes|Platform Specific Notes]] below.

Depending on your needs it may be a good idea to include debugging hooks.
: See [[GRASS_Debugging#Compile_Time_Setup]].
CFLAGS="-ggdb -Wall -Werror-implicit-function-declaration" ./configure ...

At the end of configuration process you should get report not much different from this:

GRASS is now configured for: x86_64-pc-linux-gnu

Source directory: /home/user/software/grass_master
Build directory: /home/user/software/grass_master
Installation directory: ${prefix}/grass79
Startup script in directory:${exec_prefix}/bin
C compiler: gcc -O2 -march=native -std=gnu99 -fexceptions -fstack-protector -m64 -fdiagnostics-color
C++ compiler: c++ -g -Wall
Building shared libraries: yes
OpenGL platform: X11

MacOSX application: no
MacOSX architectures:
MacOSX SDK:

BLAS support: yes
BZIP2 support: no
C++ support: yes
Cairo support: yes
DWG support: no
FFTW support: yes
FreeType support: yes
GDAL support: yes
GEOS support: yes
[...]

* Let's compile it (takes a little while...)!
make -j2
* At the end, you should get report not much different from this:
----------------------------------------------------------------------
Following modules are missing the 'description.html' file in src code:
----------------------------------------------------------------------
GRASS GIS compilation log
-------------------------
Started compilation: Mon 19 Aug 2019 10:47:57 PM CEST
--
Errors in:
No errors detected.
--
Finished compilation: Mon 19 Aug 2019 10:55:12 PM CEST
(In case of errors please change into the directory with error and run 'make')

* If there is any error, change directory to directory with error and run "make" again. Report occurring bug to GRASS mailing list
* Once the installation process is finished, you're ready to install GRASS system wide.
su -c 'make install'
* enjoy GRASS:
grass79

=== What else? ===

If you want to use [http://www.qgis.org QGIS], then also compile the GRASS-GDAL/OGR plugin. This is also useful to access your GRASS-data
from other application using GDAL/OGR like [http://thuban.intevation.de thuban].
* [[Compile and install GRASS and QGIS with GDAL/OGR Plugin]] (enables QGIS to read GRASS data directly)

=== Compile and install GDAL-GRASS plugin ===

* See [[Compile and install GDAL-GRASS plugin]]

=== Platform Specific Notes ===

==== Linux ====

Linux comes in various flavours, i.e. distributions.

===== Distribution related packaging =====

* Arch Linux: https://github.com/czka/AUR-grass7
* Centos: https://src.fedoraproject.org/rpms/grass
* Debian: https://trac.osgeo.org/grass/wiki/DebianUbuntuPackaging
* EPEL: https://src.fedoraproject.org/rpms/grass
* Fedora: https://src.fedoraproject.org/rpms/grass
* Ubuntu: https://trac.osgeo.org/grass/wiki/DebianUbuntuPackaging

===== Generic procedure for Debian-based distributions (Ubuntu, ...) =====

WORK IN PROGRESS

1. Install official GRASS package

sudo apt install grass grass-dev

2. Enable source code download

# do backup first
sudo cp /etc/apt/sources.list /etc/apt/sources.list.orig
sudo sed -i '/^#\sdeb-src /s/^# *//' /etc/apt/sources.list

3. Install GRASS dependencies

sudo apt build-dep grass

4. Download GRASS source code

git clone https://github.com/osgeo/grass

5. Compile GRASS from source code

cd grass

Configure:

grass --config build | sh

Optionally install missing dependecies (can happen when official GRASS package is not compatible with GRASS master), eg.

apt install libzstd-dev

Compile:

make -j2

6. Run locally or install

./bin.

or

sudo make install
grass79 --version

===== Debian =====

* Official [http://wiki.debian.org/DebianGis DebianGIS] packaging control files, available on git server:
git://git.debian.org/git/pkg-grass/grass.git

http://anonscm.debian.org/cgit/pkg-grass/grass.git/

====== GRASS 6.1 on Debian Sarge ======

* [http://hamish.bowman.googlepages.com/debiangisfiles#compile Compiling GRASS 6.1-CVS on Debian/OldStable (aka 3.1, Sarge)]

====== GRASS 6.4 on Debian Lenny ======

Install needed packages:
apt-get install flex bison libreadline-dev libncurses5-dev lesstif2-dev debhelper dpatch libtiff4-dev \
tcl-dev tk-dev libfftw3-dev libxmu-dev libfreetype6-dev autoconf2.13 autotools-dev doxygen \
libmysqlclient15-dev graphviz libsqlite3-dev python-wxgtk2.8 libcairo2-dev libwxgtk2.8-dev \
python-dev libgdal1-dev libgdal1-1.5.0 libproj-dev libproj0 proj-bin proj-data mysql

# Important: avoid using CFLAGS="... -Werror-implicit-function-declaration" (also on later Debian versions), see {{trac|1684}}

Configure:
./configure \
--with-cxx \
--with-sqlite \
--with-postgres --with-postgres-includes=/usr/include/postgresql \
--with-mysql --with-mysql-includes=/usr/include/mysql --with-mysql-libs=/usr/lib/mysql \
--with-odbc \
--with-cairo \
--with-proj-share=/usr/share/proj \
--with-tcltk-includes=/usr/include/tcl8.4/ \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-motif --with-fftw --with-nls --with-python \
--with-x --x-libraries=/usr/lib/x86_64-linux-gnu

Compile:
make

Install:
sudo make install

====== GRASS 6.4 on Debian Jessie ======

Install needed packages:
apt-get install flex bison debhelper dpatch autoconf2.13 autotools-dev \
python-dev g++ gcc gettext graphviz libcairo2-dev libfftw3-dev tcl-dev tk-dev \
libfreetype6-dev libgdal1h libgdal1-dev libglu1-mesa-dev libglw1-mesa-dev \
libncurses5-dev libreadline-dev libsqlite3-dev libtiff5-dev \
libwxgtk3.0-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
libproj-dev proj-bin proj-data python-numpy python-wxgtk3.0 subversion wx-common zlib1g-dev \
netcdf-bin libnetcdf-dev libatlas-dev libgegl-dev doxygen postgresql mysql-server \
libgeotiff-dev libblas-dev libgeotiff-epsg libxmu-dev libxt-dev libx11-dev

# Important: avoid using CFLAGS="... -Werror-implicit-function-declaration" (also on later Debian versions), see {{trac|1684}}

Configure:
./configure \
--with-cxx \
--with-sqlite \
--with-postgres \
--with-odbc \
--with-cairo \
--with-geos \
--with-proj-share=/usr/share/proj \
--with-tcltk-includes=/usr/include/tcl8.6/ \
--with-mysql --with-mysql-includes=/usr/include/mysql --with-mysql-libs=/usr/lib/mysql \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-motif \
--with-fftw \
--with-nls \
--with-postgres-includes=/usr/include/postgresql \
--with-python \
--with-x --x-libraries=/usr/lib/x86_64-linux-gnu

Compile:
make

Install:
sudo make install

====== GRASS 7 on Debian Squeeze ======

Install needed packages:
apt-get install flex bison debhelper dpatch autoconf2.13 autotools-dev python-dev \
g++ gcc gettext graphviz libcairo2-dev libfftw3-dev libfreetype6-dev \
libgdal1 libgdal1-dev libglu1-mesa-dev libglw1-mesa-dev \
libncurses5-dev libproj-dev libreadline-dev libsqlite3-dev libtiff4-dev \
libwxgtk2.8-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
proj-bin proj-data python-numpy python-wxgtk2.8 subversion wx-common zlib1g-dev

Download source code:

svn checkout https://svn.osgeo.org/grass/grass/trunk grass_trunk

Configure:

cd grass_trunk/
CFLAGS="-Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused" \
CXXFLAGS="-Wall" \
./configure --prefix=/usr/local \
--with-gdal --with-proj --with-proj-share=/usr/share \
--with-glw --with-nls --with-readline \
--without-tcltk \
--with-cxx \
--enable-largefile \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-sqlite \
--with-cairo --with-python=/usr/bin/python2.6-config --with-wxwidgets \
--with-geos --with-pthread

Compile:
make

Install:
sudo make install # installs as /usr/local/bin/grass72

====== GRASS 7 on Debian Wheezy ======

Install needed packages:

# note: cmake and libboost-all-dev only needed for optional libLAS
sudo apt-get install cmake libboost-all-dev

sudo apt-get install flex bison debhelper dpatch autoconf2.13 autotools-dev \
python-dev g++ gcc gettext graphviz libcairo2-dev libfftw3-dev libfreetype6-dev \
libgdal1 libgdal1-dev libglu1-mesa-dev libglw1-mesa-dev libncurses5-dev libproj-dev \
libreadline-dev libtiff4-dev libwxgtk2.8-dev libxmu-dev libxmu-headers \
libxt-dev mesa-common-dev proj-bin proj-data python-numpy python-wxgtk2.8 subversion wx-common \
zlib1g-dev netcdf-bin libatlas-dev libgegl-dev opencl-headers ocl-icd-libopencl1 \
libsqlite3-dev postgresql python-sphinx python-gdal

Download and Install libLAS
wget http://download.osgeo.org/liblas/libLAS-1.7.0.tar.gz
tar -zxvf libLAS-1.7.0.tar.gz
cd libLAS-1.7.0/
mkdir makefiles
cd makefiles
cmake -G "Unix Makefiles" ../
make
sudo make install
sudo ldconfig
cd ../..

Download of GRASS GIS 7 source code:
wget http://grass.osgeo.org/grass78/source/grass-7.8.0.tar.gz
tar -zxvf grass-7.8.0.tar.gz

Configure:
cd grass-7.0.0
CFLAGS="-g -Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused" CXXFLAGS="-g -Wall" \
./configure \
--prefix=/usr/local \
--with-gdal \
--with-proj --with-proj-share=/usr/share \
--with-glw --with-nls --with-readline \
--with-cxx --enable-largefile \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-sqlite --with-cairo --with-python=/usr/bin/python-config \
--with-wxwidgets --with-geos --with-blas \
--with-lapack-includes=/usr/lib/lapack --with-liblas=yes \
--with-netcdf=/usr/bin/nc-config --with-odbc=yes \
--with-openmp=yes --with-pthread=yes --with-postgres=yes \
--with-postgres-includes=/usr/include/postgresql \
--with-postgres-libs=/usr/lib/postgresql

# --with-mysql=yes --with-mysql-includes=/usr/include/mysql \
# --with-mysql-libs=/usr/lib/mysql \

GRASS GIS 7 is now configured (example):

Source directory: /home/user/grass-7.0.0
Build directory: /home/user/grass-7.0.0
Installation directory: ${prefix}/grass-7.0.0
Startup script in directory:${exec_prefix}/bin
C compiler: gcc -g -Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused
C++ compiler: c++ -g -Wall
Building shared libraries: yes
OpenGL platform: X11
MacOSX application: no
MacOSX architectures:
MacOSX SDK:
BLAS support: yes
C++ support: yes
Cairo support: yes
DWG support: no
FFTW support: yes
FreeType support: yes
GDAL support: yes
GEOS support: yes
LAPACK support: no
Large File support (LFS): yes
libLAS support: yes
MySQL support: no
NetCDF support: yes
NLS support: yes
ODBC support: yes
OGR support: yes
OpenCL support: no
OpenGL support: yes
OpenMP support: yes
PNG support: yes
POSIX thread support: yes
PostgreSQL support: yes
Readline support: yes
Regex support: yes
SQLite support: yes
TIFF support: yes
wxWidgets support: yes
X11 support: no

Compile:
make -j2

Install:
sudo make install # installs as /usr/local/bin/grass70

Launch:
grass70

====== GRASS 7 on Debian Jessie ======

Install needed packages:
sudo apt-get install cmake libboost-all-dev flex bison debhelper dpatch autoconf2.13 \
autotools-dev python-dev g++ gcc gettext graphviz libcairo2-dev libfftw3-dev \
libfreetype6-dev libgdal1h libgdal1-dev libglu1-mesa-dev libglw1-mesa-dev \
libncurses5-dev libproj-dev libreadline-dev libsqlite3-dev libtiff5-dev \
libwxgtk3.0-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
proj-bin proj-data python-numpy python-wxgtk3.0 subversion wx-common zlib1g-dev \
netcdf-bin libnetcdf-dev libgegl-dev doxygen python-sphinx \
postgresql libgeotiff-dev libblas-dev mysql-server \
libatlas-dev liblapack3gf liblapack-dev
# opencl-headers ocl-icd-libopencl1 liblas-bin liblas-c-dev python-gdal

Download and compile libLAS (or simply install 'liblas-c-dev ', see above):
wget http://download.osgeo.org/liblas/libLAS-1.8.0.tar.bz2
tar xjf libLAS-1.8.0.tar.bz2
mkdir libLAS-1.8.0/makefiles
cd libLAS-1.8.0/makefiles
cmake -G "Unix Makefiles" ../
make
sudo make install

Download and compile GRASS 7:
# (check there for later version)
wget http://grass.osgeo.org/grass74/source/grass-7.4.0.tar.gz
tar xzfv grass-7.4.0.tar.gz
cd grass-7.4.0
CFLAGS="-g -Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused" \
CXXFLAGS="-g -Wall" \
./configure \
--prefix=/usr/local \
--with-gdal --with-proj --with-proj-share=/usr/share \
--with-glw --with-nls --with-readline \
--with-cxx --enable-largefile \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-sqlite --with-cairo --with-python=/usr/bin/python-config \
--with-wxwidgets --with-geos \
--with-blas --with-blas-includes=/usr/include/atlas/ \
--with-lapack --with-lapack-includes=/usr/include/atlas/ \
--with-netcdf=/usr/bin/nc-config --with-odbc=yes \
--with-openmp=yes --with-pthread=no --with-postgres=yes \
--with-postgres-includes=/usr/include/postgresql \
--with-postgres-libs=/usr/lib/postgresql \
--with-mysql=yes --with-mysql-includes=/usr/include/mysql \
--with-mysql-libs=/usr/lib/mysql
make -j2

Install:
sudo make install # installs as /usr/local/bin/grass74

====== GRASS 7 on Debian Stretch ======
(Updated from above with package changes required for Debian Stretch)

Install needed packages for GRASS 7.2 - 7.6:
apt-get install cmake libboost-all-dev flex bison debhelper dpatch autoconf2.13 autotools-dev \
python-dev g++ gcc gettext graphviz libcairo2-dev libfftw3-dev libfreetype6-dev libgdal20 \
libgdal-dev libglu1-mesa-dev libglw1-mesa-dev libncurses5-dev libproj-dev libreadline-dev \
libsqlite3-dev libtiff5-dev libwxgtk3.0-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
proj-bin proj-data python-numpy python-wxgtk3.0 python-wxtools wx-common zlib1g-dev netcdf-bin \
libnetcdf-dev libgegl-dev doxygen python-sphinx postgresql libgeotiff-dev libblas-dev \
mariadb-server libatlas-dev liblapack3 liblapack-dev opencl-headers ocl-icd-libopencl1 \
subversion liblas-bin liblas-c-dev python-gdal libpdal-dev libpdal-plugin-python pdal

Install needed packages for GRASS 7.8+ (Python 3 support!):
apt-get install cmake libboost-all-dev flex bison debhelper dpatch autoconf2.13 autotools-dev \
g++ gcc gettext graphviz libcairo2-dev libfftw3-dev libfreetype6-dev libgdal20 python3-dev \
libgdal-dev libglu1-mesa-dev libglw1-mesa-dev libproj-dev libreadline-dev libgeos-c1v5 \
libsqlite3-dev libtiff5-dev libwxgtk3.0-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
proj-bin proj-data python3-numpy python3-six wx-common zlib1g-dev netcdf-bin \
libnetcdf-dev libgegl-dev doxygen python3-sphinx postgresql libgeotiff-dev libblas-dev \
libatlas-dev liblapack3 liblapack-dev opencl-headers ocl-icd-libopencl1 \
subversion liblas-bin liblas-c-dev python3-gdal libpdal-dev libpdal-plugin-python pdal

# ? python3-wxgtk4.0 libmariadb

Download and unpack source code or fetch from GitHub: https://github.com/OSGeo/grass

Configuration:

CFLAGS="-Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused" \
CXXFLAGS="-Wall" \
./configure \
--prefix=/usr/local \
--with-gdal --with-proj --with-proj-share=/usr/share \
--with-glw --with-nls --with-readline \
--with-cxx --enable-largefile \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-sqlite --with-cairo --with-python=/usr/bin/python-config \
--with-wxwidgets --with-geos \
--with-blas --with-blas-includes=/usr/include/atlas/ \
--with-lapack --with-lapack-includes=/usr/include/atlas/ \
--with-netcdf=/usr/bin/nc-config --with-odbc=yes \
--with-openmp=yes --with-pthread=no --with-postgres=yes \
--with-postgres-includes=/usr/include/postgresql \
--with-postgres-libs=/usr/lib/postgresql \
--with-mysql=yes --with-mysql-includes=/usr/include/mysql

Compile:

make -j2

Install:

make install

====== GRASS 7 on Debian Buster ======

-- To be updated --

Install needed packages for GRASS 7.8+ (Python 3 support!):
apt-get install cmake libboost-all-dev flex bison debhelper dpatch autoconf2.13 autotools-dev \
g++ gcc gettext graphviz libcairo2-dev libfftw3-dev libfreetype6-dev libgdal20 python3-dev \
libgdal-dev libglu1-mesa-dev libglw1-mesa-dev libproj-dev libreadline-dev libgeos-c1v5 \
libsqlite3-dev libtiff5-dev libwxgtk3.0-dev libxmu-dev libxmu-headers libxt-dev mesa-common-dev \
proj-bin proj-data python3-numpy python3-six wx-common zlib1g-dev netcdf-bin \
libnetcdf-dev libgegl-dev doxygen python3-sphinx postgresql libgeotiff-dev libblas-dev \
liblapack3 liblapack-dev opencl-headers ocl-icd-libopencl1 \
subversion liblas-bin liblas-c-dev python3-gdal libpdal-dev libpdal-plugin-python pdal \
python3-wxgtk4.0 default-libmysqlclient-dev

Download and unpack source code or fetch from GitHub: https://github.com/OSGeo/grass

Configuration:

CFLAGS="-Wall -Werror-implicit-function-declaration -fno-common -Wextra -Wunused" \
CXXFLAGS="-Wall" \
./configure \
--prefix=/usr/local \
--with-gdal --with-proj --with-proj-share=/usr/share \
--with-glw --with-nls --with-readline \
--with-cxx --enable-largefile \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-sqlite --with-cairo --with-python=/usr/bin/python-config \
--with-wxwidgets --with-geos \
--with-blas --with-blas-includes=/usr/include/atlas/ \
--with-lapack --with-lapack-includes=/usr/include/atlas/ \
--with-netcdf=/usr/bin/nc-config --with-odbc=yes \
--with-openmp=yes --with-pthread=no --with-postgres=yes \
--with-postgres-includes=/usr/include/postgresql \
--with-postgres-libs=/usr/lib/postgresql \
--with-mysql=yes --with-mysql-includes=/usr/include/mysql

Compile:

make -j2

Install:

make install

===== Ubuntu =====

There is a dedicated page on how to [[Compile_and_Install_Ubuntu | Compile the GRASS GIS source code & install it in Ubuntu]].

===== Linux Mint =====

The [[Compile_and_Install_Ubuntu | detailed compilation guide for Ubuntu]] may just work. Here is a short guide for Mint:
<source lang="bash">
# installation of required libraries and compile tools
sudo apt-get install\
build-essential flex make bison gcc libgcc1 g++ cmake ccache \
python python-dev python-opengl python-wxversion python-wxtools python-wxgtk3.0 python-dateutil \
libgsl-dev python-numpy wx3.0-headers wx-common libwxgtk3.0-dev libwxbase3.0-dev \
libncurses5-dev zlib1g-dev gettext libtiff5-dev libpnglite-dev libcairo2 libcairo2-dev \
sqlite3 libsqlite3-dev libpq-dev libreadline6 libreadline6-dev libfreetype6-dev \
libfftw3-3 libfftw3-dev libboost-thread-dev libboost-program-options-dev \
liblas-c-dev resolvconf libjasper-dev subversion libav-tools libavutil-dev \
ffmpeg2theora libffmpegthumbnailer-dev libavcodec-dev libxmu-dev libavformat-dev \
libswscale-dev checkinstall libglu1-mesa-dev libxmu-dev ghostscript
</source>

Next steps:
* download [https://grass.osgeo.org/download/software/sources/ GRASS GIS source code] (e.g. take the "Weekly 7.x-svn snapshot")
* unpack source code, change into the source code directory

<source lang="bash">
# now "configure" stop to prepare for compilation
CFLAGS="-Wall" ./configure \
--with-cxx --with-gdal \
--with-proj --with-proj-share=/usr/share/proj/ \
--with-geos --without-postgres \
--with-nls --with-opengl-includes=/usr/include/GL/ \
--with-fftw --with-freetype \
--with-freetype-includes=/usr/include/freetype2 --with-sqlite \
--with-python=/usr/bin/python2.7-config --with-wx=/usr/bin/wx-config \
--with-wxwidgets --with-cairo --enable-largefile

# compile GRASS GIS
make -j2

# install compiled GRASS GIS on system
sudo make install
</source>

===== Mandriva =====

Installation of dependencies (urpmi will ask you a few more):

'''Mandriva 2009:''' (take out the '64' everywhere if you are on 32bit)
# as root
urpmi flex bison zlib-devel tiff-devel png-devel tcl-devel tk-devel sqlite3-devel \
mesagl1-devel mesaglu1-devel lib64xmu6-devel gcc-c++ gettext \
lib64wxgtk2.8 lib64wxgtk2.8-devel lib64wxgtkgl2.8 wxgtk2.8 \
lib64wxPythonGTK2.8 lib64wxPythonGTK2.8-devel wxPythonGTK wxPythonGTK-wxversion
exit

'''Mandriva 2010:''' (take out the '64' everywhere if you are on 32bit) - see also [http://svn.mandriva.com/cgi-bin/viewvc.cgi/packages/cooker/grass/current/SPECS/ SPEC] file
# as root
# installation of PROJ and GDAL
urpmi proj proj-devel gdal gdal-devel gcc-gfortran lib64openssl1.0.0 \
lib64openssl1.0.0-devel postgresql8.4-devel lib64pq8.4

# installation of compilation environment
urpmi flex bison zlib-devel tiff-devel png-devel tcl-devel tk-devel sqlite3-devel \
lib64mesagl1-devel lib64mesaglu1-devel lib64xmu6-devel gcc-c++ gettext \
lib64wxgtk2.8 lib64wxgtk2.8-devel lib64wxgtkgl2.8 wxgtk2.8 \
lib64wxPythonGTK2.8 lib64wxPythonGTK2.8-devel wxPythonGTK wxPythonGTK-wxversion
exit

Then, to configure GRASS, run (64 bit stuff optional of course):
# as user
./configure \
--enable-64bit --with-libs=/usr/lib64 \
--with-cxx \
--with-gdal=/usr/local/bin/gdal-config \
--with-sqlite \
--with-nls \
--with-python \
--with-wxwidgets=/usr/lib/wxPython/bin/wx-config \
--with-fftw \
--with-ffmpeg --with-ffmpeg-includes="/usr/include/libav* /usr/include/libpostproc /usr/include/libswscale" \
--with-motif \
--with-mysql --with-mysql-includes=/usr/include/mysql --with-mysql-libs=/usr/lib64 \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--enable-largefile

# compilation (use -j2 ior -j4 parameter on multi-core CPUs to accelerate):
make

Installation:
su
# this will install into /usr/local/
make install
exit

===== Enterprise Linux =====

Enterprise Linux (EL) and derivatives (that is, Red Hat Enterprise Linux, CentOS and Scientific Linux) is a popular and robust platform for servers and computing-heavy workstations, and is therefore a good fit for GIS specific requirements.

See: http://wiki.osgeo.org/wiki/Enterprise_Linux_GIS

===== Scientific Linux =====

See Centos

===== CentOS =====

You first need to add the EPEL repository for PROJ.4 and GDAL, see [https://fedoraproject.org/wiki/EPEL/FAQ#How_can_I_install_the_packages_from_the_EPEL_software_repository.3F here]

<strike>
Preparation '''Centos 5''' (old):
yum install epel-release

# Note: CentOS 5 comes with Python 2.4 which lacks python-config, hence two extra tweaks are needed.
yum install flex bison zlib-devel tcl-devel tk-devel gcc-c++ gettext \
libtiff-devel libpng-devel sqlite-devel \
mesa-libGL-devel mesa-libGLU-devel mesa-libGLw-devel \
mesa-libOSMesa-devel libXmu-devel python-devel gtk2-devel\
ncurses-devel postgresql-devel make
</strike>

Preparation '''Centos 6''' | '''Scientific Linux 6''':
yum install epel-release

yum install flex bison make zlib-devel gcc-c++ gettext \
sqlite-devel mesa-libGL-devel mesa-libGLU-devel \
libXmu-devel libX11-devel fftw-devel libtiff-devel \
lesstif-devel python-devel numpy wxPython wxGTK-devel \
proj proj-devel proj-epsg proj-nad libxml2 gdal gdal-devel geos geos-devel \
python-dateutil python-imaging python-matplotlib python-argparse
# only GRASS GIS 6: install also tcl-devel tk-devel

Preparation '''Centos 7''' | '''Scientific Linux 7''':
yum install epel-release

yum install flex bison make zlib-devel gcc-c++ gettext \
sqlite-devel mesa-libGL-devel mesa-libGLU-devel \
libXmu-devel libX11-devel fftw-devel libtiff-devel \
lesstif-devel python-devel numpy wxPython wxGTK-devel \
proj proj-devel proj-epsg proj-nad libxml2 gdal gdal-devel geos geos-devel \
netcdf netcdf-devel blas-devel lapack-devel atlas-devel \
python-dateutil python-imaging python-matplotlib python-sphinx \
doxygen subversion

Preparation '''Centos 8''' | '''Scientific Linux 8''':
dnf install epel-release

Note, GDAL isn't yet in EPEL8, see https://bugzilla.redhat.com/show_bug.cgi?id=1741567
dnf install flex bison make zlib-devel gcc-c++ gettext \
sqlite-devel mesa-libGL-devel mesa-libGLU-devel \
libXmu-devel libX11-devel fftw-devel libtiff-devel \
python3-devel python3-numpy wxGTK3-devel \
proj proj-devel proj-datumgrid libxml2 \
geos geos-devel \
netcdf netcdf-devel atlas-devel \
python3-dateutil python3-imaging python3-matplotlib \
subversion --skip-broken

GDAL is available on Fedora COPR here: https://copr.fedorainfracloud.org/coprs/neteler/GDAL/builds/
dnf copr enable neteler/GDAL
dnf update
dnf install gdal gdal-libs gdal-python-tools python3-gdal gdal-devel

'''GRASS GIS 7 compilation and installation'''

[https://grass.osgeo.org/grass-stable/source/snapshot/ Download source code] (e.g., --> "Download latest 7.8 code)" and configure GRASS 7 (suggestion: save this as script):

./configure \
--with-cxx \
--enable-largefile \
--with-proj --with-proj-share=/usr/share/proj \
--with-gdal=/usr/bin/gdal-config \
--with-sqlite \
--with-python \
--with-cairo --with-cairo-ldflags=-lfontconfig \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--with-wxwidgets=/usr/bin/wx-config \
--with-openmp \
--with-blas --with-blas-includes=/usr/include/atlas-x86_64-base/ \
--with-lapack --with-lapack-includes=/usr/include/atlas-x86_64-base/ \
--with-fftw \
--with-geos \
--with-netcdf \
--without-ffmpeg \
--without-mysql \
--without-postgres \
--without-odbc \
--without-fftw

Compile:
make
or on a multicore system (number depends of available cores):
make -j4

For a system wide installation, run as root user:
make install
OR simply run it directly from the source code directory (substitute ARCH with i686 or x86_64):

bin.$ARCH/grass78 -gui

In this case, for convenience, add it to the search path:
mkdir $HOME/bin
cd $HOME/bin
# example:
ln -s $HOME/software/grass78_release/bin.i686-pc-linux-gnu/grass78 .

Now use it subsequently with
grass78 -gui

'''Installation grass78 on a HPC system with '''Centos 7''' and no root privileges:'''
This assumes that python3, fftw, proj, gdal and geos are available on the HPC system, either as modules or as installed software.

Download and prepare some dependencies (freetypes and zstd)
mkdir -p $HOME/grass/freetypes
cd $HOME/grass/freetypes
wget path/to/freetype-2.9.1.tar.gz
tar -xf freetype-2.9.1.tar.gz

mkdir $HOME/grass/zstd
cd mkdir $HOME/grass/zstd
wget path/to/v1.4.4/zstd-1.4.4.tar.gz
tar -xf zstd-1.4.4.tar.gz
make install PREFIX=./

Add the ZSTD path to your LD_LIBRARY_PATH

tee -a $HOME/.bashrc > /dev/null << EOT
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$HOME/grass/zstd/zstd-1.4.4/lib
EOT

The configure command could look like this
./configure \
-prefix=$HOME/grass \
--enable-64bit --with-fftw-includes=/path/to/fftw/include/ \
--with-fftw-libs=/path/to/fftw/lib/ \
--with-freetype-includes=$HOME/grass/freetypes/freetype-2.9.1/include/ \
--with-netcdf --with-geos --with-blas --with-lapack --with-postgres \
--with-zstd-includes=$HOME/grass/zstd/zstd-1.4.4/lib/ \
--with-zstd-libs=$HOME/grass/zstd/zstd-1.4.4/lib/ \
--with-gdal=/path/to/gdal-config # This could be the path to a gdal version compiled from source

Finally usual:
make; make install

===== Gentoo =====

./configure \
--with-freetype=yes --with-freetype-includes="/usr/include/freetype2/"

See also http://packages.gentoo.org/package/sci-geosciences/grass

===== Funtoo =====

{{MovedToTrac|FuntooLinux}}

===== Fedora =====

====== GRASS GIS 6 on Fedora ======

'''Preparation''' for the compilation of GRASS GIS 6 source code (F16-F21):

yum install proj-devel gdal-devel sqlite-devel ffmpeg-devel mesa-libGL-devel \
mesa-libGLU-devel libXmu-devel libX11-devel tcl-devel tk-devel geos \
fftw-devel libtiff-devel lesstif-devel python-devel numpy wxPython wxGTK-devel \
gcc gcc-c++ bison flex ncurses-devel proj-epsg proj-nad xml2 subversion

''Note 1: that currently gdal-devel has (too) many dependencies and may lead to a massive download of extra packages (200 on a fresh Fedora 16 install). Hopefully solved in later Fedora versions.''

''Note 2: the optional ffmpeg-devel comes from the rpmfusion-free repository ([http://rpmfusion.org/Configuration/ configuration]).''

'''Download''' the source code:
* GRASS GIS 6: [http://grass.osgeo.org/download/software/sources/ release package] - [http://grass.osgeo.org/grass64/source/snapshot/ weekly snapshot] - [http://trac.osgeo.org/grass/wiki/DownloadSource#GRASS6.4 SVN repository]

'''Configure''': This is an ''example'' how to configure the source code on a Fedora system:

./configure \
--with-cxx \
--with-gdal=/usr/bin/gdal-config \
--with-proj --with-proj-share=/usr/share/proj \
--with-sqlite \
--with-nls \
--with-geos \
--with-wxwidgets=/usr/bin/wx-config \
--with-python=/usr/bin/python-config \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--enable-largefile \
--without-odbc \
--with-fftw

Extra: If you also want '''FFMPEG''' support - it requires 'yum install fftw-devel'. Then add to the configuration lines above:

--with-ffmpeg --with-ffmpeg-includes="/usr/include/ffmpeg /usr/include/ffmpeg/libav* /usr/include/ffmpeg/libpostproc /usr/include/ffmpeg/libswscale" \

Finally '''compile''' the configured source code:
make
or on multicore (number depends of available cores):
make -j4
and
make install # requires root permissions unless you become owner of /usr/local/

Then use GRASS GIS 6 and enjoy!

====== GRASS GIS 7 on Fedora ======

'''Preparation''' for the compilation of GRASS GIS 7.8+ source code (F20-F30):

dnf install gcc gcc-c++ bison flex ncurses-devel gettext proj-epsg proj-devel proj-nad \
gdal gdal-devel sqlite-devel xml2 mesa-libGL-devel \
fftw-devel mesa-libGLU-devel libXmu-devel libX11-devel geos geos-devel \
libtiff-devel python3-devel numpy wxPython wxGTK3-devel subversion \
python3-dateutil python3-imaging python3-matplotlib-wx doxygen python3-sphinx \
libzstd-devel libzstd python3-six python3-numpy python3-wxpython4 \
proj-datumgrid proj-datumgrid-europe proj-datumgrid-north-america proj-datumgrid-world proj-datumgrid-oceania

# optionally also: netcdf-devel postgresql-devel
# atlas-devel lapack-devel lapack-devel
# laszip laszip-devel

''Note 1: the optional ffmpeg-devel comes from the rpmfusion-free repository ([http://rpmfusion.org/Configuration/ configuration]).''

'''Download''' the source code:
* GRASS GIS 7: [https://grass.osgeo.org/grass78/source/snapshot/ weekly snapshot] - [http://trac.osgeo.org/grass/wiki/DownloadSource#GRASS7 GitHub repository]

'''Configure''': This is an example how to configure the source code on a Fedora system:

./configure \
--with-cxx \
--with-gdal=/usr/bin/gdal-config \
--with-proj --with-proj-share=/usr/share/proj \
--with-geos \
--with-sqlite \
--with-nls \
--with-wxwidgets=/usr/bin/wx-config \
--with-fftw \
--with-cairo --with-cairo-ldflags=-lfontconfig \
--with-freetype --with-freetype-includes=/usr/include/freetype2 \
--enable-largefile \
--without-odbc

''Extra 1:'' If you also want '''FFMPEG support''' - it requires 'dnf install fftw-devel' from the rpmfusion-free repository. Then add to the configuration lines above:

--with-ffmpeg --with-ffmpeg-includes="/usr/include/ffmpeg /usr/include/ffmpeg/libav* /usr/include/ffmpeg/libpostproc /usr/include/ffmpeg/libswscale" \

''Extra 2:'' For '''LAPACK/BLAS support''' (addons i.spec.unmix, v.kriging etc), install "dnf install lapack lapack-devel blas blas-devel atlas atlas-devel". Then add to the configuration lines above:
--with-blas --with-blas-includes=/usr/include/atlas-x86_64-base/ \
--with-lapack --with-lapack-includes=/usr/include/atlas-x86_64-base/ \

''Extra 3:'' For '''ZSTD support''' (Zstandard compression algorithm), first install "dnf install libzstd libzstd-devel zstd". After installing the zstd related packages, add to the configuration lines above:
--with-zstd \

Finally '''compile''' the configured source code:
make
or on multicore (number depends of available cores):
make -j4
and
make install # requires root permissions unless you become owner of /usr/local/

Then use GRASS GIS 7 and enjoy!

===== openSUSE =====

To build GRASS on openSUSE:

''Application:Geo'' repo to be added (see [https://software.opensuse.org//download.html?project=Application%3AGeo&package=gdal Install package Application:Geo]

<source lang="bash">
# example for Leap 42 version:
sudo zypper addrepo http://download.opensuse.org/repositories/Application:Geo/openSUSE_Leap_42.3/Application:Geo.repo
sudo zypper refresh
</source>

RPM packages to be installed:
<source lang="bash">
sudo zypper install bison flex freetype2-devel fftw3-devel gcc-c++ \
libgdal-devel libgeos-devel libjpeg-devel libpng-devel libtiff-devel \
man proj libproj-devel readline-devel netcdf-devel ncurses-devel \
mysql-devel postgresql-devel sqlite-devel unixODBC-devel \
tcl-devel tk-devel xorg-x11-Mesa-devel libXmu-devel \
python-numpy python-dateutil python-devel python-opengl \
python-wxWidgets python-xml python-dateutil wxWidgets-devel \
zlib-devel doxygen python-sphinx
</source>

Source code configuration:
<source lang="bash">
./configure \
--enable-largefile \
--with-proj-share=/usr/share/proj \
--with-cxx \
--with-lapack=yes \
--with-x \
--with-motif \
--with-gdal=/usr/bin/gdal-config \
--with-postgres --with-postgres-includes=/usr/include/pgsql \
--with-mysql --with-mysql-includes=/usr/include/mysql \
--with-fftw \
--with-readline \
--with-netcdf \
--with-curses \
--with-geos \
--with-nls \
--with-sqlite \
--with-freetype \
--with-freetype-includes=/usr/include/freetype2 \
--with-wxwidgets \
--with-odbc \
--with-python
</source>

Then compile with "make [-j2]".

===== Arch Linux =====

Up-to-date links to Arch Linux GRASS PKGBUILDs are on https://grass.osgeo.org/download/software/linux/.

But if you want to compile it yourself, you have to keep in mind that in Arch Linux the default Python version 3.

python --version

Python 3.3.1

Therefore, to build GRASS GIS (version 7 in this example), we can use either use virtualenv or symlink python2 and python2-config in a given directory.
Let's use the latter approach

sudo ln -s /usr/bin/python2 $HOME/usr/bin/python
sudo ln -s /usr/bin/python2-config $HOME/usr/bin/python-config

We can now start building GRASS 7

export PATH=~/usr/bin:$PATH && \
./configure \
--enable-debug \
--enable-64bit \
--with-libs=/usr/lib64 \
--with-cxx \
--with-readline \
--with-zlib-includes="/usr/include/" \
--with-freetype=yes \
--with-freetype-includes="/usr/include/freetype2/" \
--enable-largefile=yes \
--with-gdal=/usr/bin/gdal-config \
--with-proj-share=/usr/share/proj/ \
--with-geos=/usr/bin/geos-config \
--with-cairo \
--with-odbc \
--with-pthread \
--with-liblas=/usr/local/bin/liblas-config \
--with-fftw-includes="/usr/include/" \
--with-fftw-libs=/usr/lib/ \
--with-tcltk-includes="/usr/include/" \
--with-wxwidgets \
--with-postgres=yes \
--with-postgres-includes="/usr/include/postgresql/internal" \
--with-postgres-libs="/usr/include/postgresql/internal/libpq" \
--with-sqlite=yes \
--with-python=yes \
--with-liblas \
--with-netcdf

Now let's compile and install it

make
sudo make install

Now the final step required to use GRASS with python2 is to create a bash script "grass" (or the name you want)

#!/bin/bash
export PATH=~/usr/bin:$PATH
python2 /usr/local/bin/grass72

And make it executable and copy it somewhere in the PATH

chmod+x grass
sudo cp grass /usr/local/bin

It's done, you can enjoy GRASS 7 in Arch, just type "grass" (or the name you gave to the script) in the terminal to launch it.

===== RPM SPEC files =====
* [https://build.opensuse.org/package/show?package=grass&project=Application%3AGeo OpenSuSe]
* [http://pkgs.fedoraproject.org/cgit/rpms/grass.git/tree/grass.spec Fedora]
* ...

===== Zaurus =====

... see [http://wiki.debian.org/?GrassGISonZaurus here] for instructions

==== Mac OSX ====

===== Compilation and installation =====
* [[Compiling on MacOSX using homebrew]]
* [[Compiling on MacOSX]] (rather outdated)
* [[Compiling on MacOSX using Fink]] (rather outdated)
* [https://grass.osgeo.org/download/software/mac-osx/ official download site]
* [http://www.kyngchaos.com/software/frameworks#build_scripts build scripts for dependencies] (still relevant?)

Troubleshooting:
* solving errors at starting GRASS GIS: [[MacOSX GRASS errors]]

==== FreeBSD / NetBSD ====

The recommended compiler tools are GCC, GNU make, GNU coreutils (for install), and flex. All are available through the respective package managing tools (pkg_add for FreeBSD and pkgin install for NetBSD) and for recent *BSD versions most likely installed by default.

GRASS 6.x and GRASS 7 should compile on FreeBSD 8.0 or later and NetBSD 5.0 or later (maybe also on updated NetBSD 4.x).

It is highly recommended to install GDAL/OGR and PROJ4 first. These libraries and tools are available as [http://www.freebsd.org/ports/ ports for FreeBSD] and [http://www.pkgsrc.org/ packages for NetBSD].

Optional functionality is listed with ''./configure --help'', and related libraries and tools might need to be installed first.

You then may need to edit include/Make/Platform.make and set
ICONVLIB = -liconv

==== Solaris ====

* ''2008 Oct 15'': see [http://lists.osgeo.org/pipermail/grass-user/2008-October/047093.html this post on the grass mailing list]

===== 11 SPARC/i86pc =====

The recommended compiler tools are GCC, GNU make, GNU coreutils (for install), and flex. All are available through the Solaris package manager.

Most dependencies are available through the Solaris package manager. GDAL and proj4 can either be compiled from source or installed e.g. from [http://www.opencsw.org/ OpenCSW]. If packages are installed from OpenCSW, the linker flags need to be set with

LDFLAGS="-Wl,-R/opt/csw/lib -L/opt/csw/lib -Wl,-R/opt/csw/gxx/lib -L/opt/csw/gxx/lib"

See also the [http://www.opencsw.org/use-it/ OpenCSW documentation].

===== 10 SPARC/i86pc =====

* get gcc compiler and tools. There are several sources: Solaris Companion CD (SFW pkg, installs in /opt/sfw/), Blastwave ([http://www.blastwave.org], CSW pkg, installs in /opt/csw/) or Sunfreeware ([http://www.sunfreeware.com], SMC pkg, installs in /usr/local/).
Needed Packages from Sunfreeware: SMCbinut, SMCbison, SMCcoreu, SMCfindu, SMCflex, SMCgawk, SMCgcc, SMCgrep, SMCgzip, SMCless, SMClibt, SMClicon, SMCmake, SMCncurs, SMCproj, SMCsed, SMCtar, SMCtcl, SMCtiff, SMCtk, SMCunzip, SMCzlib.

* compile and install fftw-library ([http://www.fftw.org]). You need to re-compile the library with:

./configure --with-pic --enable-shared; make ; make install.

The pre-built packages don't work.

* compile and install gdal library (see documentation of gdal, [http://www.gdal.org]).

* compile and install any additional libraries (e. g. GEOS, [http://geos.refractions.net]).

* set compiler flags and path. e. g.:

# on ultra-sparc machine:
CFLAGS="-O3 -mcpu=v9"
CXXFLAGS="-O3 -mcpu=v9"
PATH="/usr/local/bin:/opt/sfw/bin:/usr/ccs/bin:/usr/bin:/usr/sbin"
export CFLAGS CXXFLAGS PATH

Path has to be changed for the packages (Sunfreeware: /usr/local/bin, Solaris Companion: /opt/sfw/bin, Blastwave: /opt/csw/bin).

* Next configure, e. g.:

./configure --with-postgres-includes=/usr/include/pgsql/ \
--with-postgres-libs=/usr/lib --with-postgres=yes \
--with-includes=/usr/local/include/ncurses

If you use n(ew)curses, you have to include the path /usr/local/include/ncurses.

then:

make
su
make install

If the shared libraries are not found at runtime of the modules, use 'crle' to add the paths of the libraries for the dynamic linker, e. g. as root:

crle -l /lib:/usr/lib:/usr/local/lib:/opt/sfw/lib:/usr/X11/lib

Be careful not to omit a library path, the system may be unusable if you forget the /lib path.

==== AIX ====

A recent [ftp://ftp.gnu.org/gnu/make/ GNU make] (>= 3.81) and GNU coreutils are required. These are available with the [http://www-03.ibm.com/systems/power/software/aix/linux/toolbox/download.html IBM AIX toolbox] or through third-party AIX software repositories, e.g. [http://www.bullfreeware.com/ bullfreeware] and [http://www.perzl.org/aix/ perzl.org]. Note that 'make' does not work, only 'gmake' works.

General instructions to compile on AIX are e.g. [http://www.perzl.org/aix/index.php?n=Main.Instructions here]

On AIX, compilation results by default in 32 bit applications and static libraries. The [http://www.ibm.com/developerworks/aix/library/au-gnu.html IBM documentation] explains how to build 64 bit applications and shared libraries with GCC.

'''GRASS 6: Using the IBM xlc compiler:'''
* ''see [http://thread.gmane.org/gmane.comp.gis.grass.user/32667 this mailing list thread]''

Mike wrote in 2009:

After attempting all the suggestions, I finally used
--disable-shared on the configure command, and all but
a handful of modules successfully compiled. I was able to
individually address the ones that failed through Makefile
edits and several small source code/header file edits.

The environment variables and configure command that worked were:
<pre>
# xlc compiler:
export PATH=/usr/local/bin:/opt/freeware/bin:$PATH
export OBJECT_MODE=64
export LIBICONV=/opt/freeware
export CC="xlc_r -q64"
export CFLAGS="-O -qstrict"
export CXX="xlC_r -q64"
export CXXFLAGS="-O -qstrict"
export AR="ar -X64"
export F77="xlf_r -q64"
export CPPFLAGS="-I/afs/isis/pkg/libpng/include -I/usr/local/include -I$LIBICONV/include -I/usr/lpp/X11/include/X11"
export LDFLAGS="-L/usr/local/lib -L$LIBICONV/lib -L/usr/lib -L/usr/X11R6/lib -lc"

./configure --prefix=/afs/isis/pkg/grass-6.4.0 \
--enable-64bit \
--disable-shared \
--with-includes="/usr/include/fontconfig /usr/include/X11 /usr/include/X11/Xft /usr/include/X11/ext" \
--x-includes=/usr/include/X11 \
--x-libraries=/usr/X11R6/lib \
--with-fftw-includes=/afs/isis/pkg/fftw-3.2.2/include \
--with-fftw-libs=/afs/isis/pkg/fftw-3.2.2/lib \
--with-gdal=/afs/isis/pkg/gdal/bin/gdal-config \
--with-proj-includes=/afs/isis/pkg/proj/include \
--with-proj-libs=/afs/isis/pkg/proj/lib \
--with-proj-share=/afs/isis/pkg/proj/share/proj \
--with-tcltk-includes=/usr/local/include \
--with-tcltk-libs=/usr/local/lib \
--with-opengl-includes=/usr/include/GL
</pre>

'''GRASS 7: Using the IBM xlc compiler:'''

Get and install (in this order):
* [ftp://ftp.gnu.org/gnu/tar/ GNU tar]
* [ftp://ftp.gnu.org/gnu/make/ GNU make] (>= 3.81)
* [http://www.sqlite.org SQLite]
* [http://trac.osgeo.org/proj/ PROJ.4] (for ./configure parameters, see [[Talk:Compile and Install|here]])
* [http://www.gdal.org GDAL] (for ./configure parameters, see [[Talk:Compile and Install|here]])
* [http://grass.osgeo.org/grass74/source/snapshot/ GRASS GIS 7]

The environment variables and configure command that worked:
<pre>
## AIX 5.x

export LIBPATH=/opt/freeware/lib64:/opt/freeware/lib
# make 'ar' happy
export OBJECT_MODE=64

PREFIX=$HOME/private/bin
./configure \
--prefix=$PREFIX \
--disable-shared \
--enable-largefile \
--with-cxx \
--with-proj-includes=$PREFIX/include/ \
--with-proj-libs=$PREFIX/lib/ \
--with-proj-share=$PREFIX/share/proj/ \
--with-sqlite \
--with-sqlite-includes=$PREFIX/include/ \
--with-sqlite-libs=$PREFIX/lib/ \
--with-tiff=no \
--with-png=no \
--with-fftw=no \
--with-cairo=no \
--with-freetype=no
</pre>

'''GRASS 7: Using the GNU gcc compiler:'''

Get and install (in this order):
* if needed, [ftp://ftp.gnu.org/gnu/tar/ GNU tar]
* if needed (the name is often 'gmake' and not 'make') [ftp://ftp.gnu.org/gnu/make/ GNU make] (>= 3.81)
* [http://www.sqlite.org SQLite]
* [http://trac.osgeo.org/proj/ PROJ.4] (for ./configure parameters, see [[Talk:Compile and Install|here]])
* [http://www.gdal.org GDAL] (for ./configure parameters, see [[Talk:Compile and Install|here]])
* [http://grass.osgeo.org/grass74/source/snapshot/ GRASS GIS 7]

The environment variables and configure command that worked for AIX 5.x:
<pre>
## AIX 5.x

export LIBPATH=/opt/freeware/lib64:/opt/freeware/lib
# make 'ar' happy
export OBJECT_MODE=64

PREFIX=$HOME/private/bin
CFLAGS='-ansi -D_ALL_SOURCE=1 -D_POSIX_SOURCE=1 -D_POSIX_C_SOURCE=200809L -Dinline=' ./configure \
--prefix=$PREFIX \
--disable-shared \
--enable-largefile \
--with-cxx \
--with-proj-includes=$PREFIX/include/ \
--with-proj-libs=$PREFIX/lib/ \
--with-proj-share=$PREFIX/share/proj/ \
--with-sqlite \
--with-sqlite-includes=$PREFIX/include/ \
--with-sqlite-libs=$PREFIX/lib/ \
--with-tiff=no \
--with-png=no \
--with-fftw=no \
--with-cairo=no \
--with-freetype=no
</pre>

The environment variables and configure command that worked for AIX 7.x:
<pre>
## AIX 7.x
export CC="gcc"
export CXX="g++"
PREFIX=$HOME/bin

LDFLAGS="-Wl,-bsvr4,-R,/opt/freeware/lib -L/opt/freeware/lib" CPPFLAGS="-I/opt/freeware/include" ./configure \
--prefix=$PREFIX \
--enable-largefile \
--enable-shared \
--with-includes=/opt/freeware/include --with-libs=/opt/freeware/lib \
--with-cxx \
--with-proj-includes=$PREFIX/include/ \
--with-proj-libs=$PREFIX/lib/ \
--with-proj-share=$PREFIX/share/proj/ \
--with-gdal=$PREFIX/bin/gdal-config \
--with-sqlite \
--with-sqlite-libs=$PREFIX/lib --with-sqlite-includes=$PREFIX/include \
--with-png=no \
--with-tiff=no \
--with-fftw=no \
--with-cairo=no \
--with-opengl=no \
--with-freetype=no
</pre>

==== MS-Windows ====

===== MS-Windows/Cygwin =====

* See the [[Cygwin]] wiki pages

===== MS-Windows/native =====

====== Compile ======

* [http://trac.osgeo.org/grass/wiki/CompileOnWindows GRASS Windows Native Binary Building Guide] (GRASS 6.4.x + 7.x)
* <strike>[http://www.webalice.it/marco.pasetti/grass/BuildFromSource.html GRASS Windows Native Binary Building Guide] (GRASS 6.3.x) </strike>
* See/adapt [http://blog.qgis.org/node/124 idea] for unattended install of QGIS (et al) from [http://trac.osgeo.org/osgeo4w/ OSGeo4W] from the QuantumGIS Blog.

See also [[WinGRASS Current Status]] for latest updates.

=== Common problems and solutions ===

During compilation, error can occur if certain packages are not installed. Here a list of problems with solution:

* error: X11/Xlib.h: No such file or directory
** this suggests that you don't have the X headers installed
** Solution: Install the libx11-dev package

* error: g.list: error while loading shared libraries: libgdal1.6.0.so.1: cannot open shared object file: No such file or directory
** this error appears in the shell right after the user clicks GUI's "Start GRASS" button. The GUI shows an error about geographic extent and gets closed afterwards.
** It happens when you launch bin.i686 executable on 64bit system. Be careful and choose the right architecture.

=== Static compilation ===

In order to get static rather than dynamically linked binaries, configure like this:

./configure --disable-shared --enable-static

This will however break the wxGUI and GRASS 7 completely because "ctypes" wants to link against shared libs, or there is something in the static libs that "ctypes" does not like.

=== Optimization ===

GCC and other compilers support [http://gcc.gnu.org/onlinedocs/gcc-4.3.3/gcc/Optimize-Options.html#Optimize-Options optimization]

If you would like to set compiler optimisations, for a possibly faster binary, type (don't enter a ";" anywhere):

CFLAGS=-O ./configure
or,
setenv CFLAGS -O
./configure

whichever works on your shell. Use -O2 instead of -O if your compiler supports this (note: O is the letter, not zero). Using the "gcc" compiler, you can also specify processor specific flags (examples, please suggest better settings to us):

CFLAGS="-mcpu=athlon -O2" # AMD Athlon processor with code optimisations
CFLAGS="-march=amdfam10" # AMD Phenom II X4 64bit processor with gcc >=4.3
CFLAGS="-mcpu=pentium" # Intel Pentium processor
CFLAGS="-mcpu=pentium4" # Intel Pentium4 processor
CFLAGS="-O2 -msse -msse2 -mfpmath=sse -minline-all-stringops" # Intel XEON 64bit processor
CFLAGS="-mtune=nocona -m64 -minline-all-stringops" # Intel Pentium 64bit processor

To find out optional CFLAGS for your platform, enter:
gcc -dumpspecs

See also: http://gcc.gnu.org/

A real fast GRASS version (and small binaries) will be created with LDFLAGS set to "stripping" (but this disables debugging):

CFLAGS="-O2 -mcpu=<cpu_see_above> -Wall" LDFLAGS="-s" ./configure

=== Configure options and their meanings ===

For configure there are many options and some GRASS modules are built only if some options are set. Here are listed common configuration options with short explanation.

* --prefix=/path - Sets path where GRASS will be installed. GRASS will reside in /path/grass-version.
* --enable-largefile - Enables large (>2Gb on 32bit systems) support. For current large file support status look at [[Large File Support]] page.
* --with-cxx - Enables compilation of C++ code. Required for r.terraflow module.
* --with-readline - Enables readline support. If readline is enabled, you can use its history/editing facilities when entering r.mapcalc expressions on stdin.
* --with-glw - Enables GLw support. The GLw library provides OpenGL "canvas" widgets for Athena and Motif.

That switch is unnecessary for normal compilation. It's only
required for r3.showdspf, which isn't normally built; if you
want it, you have build it manually
(e.g. "make -C raster3d/r3.showdspf").
As similar functionality is now provided by NVIZ, r3.showdspf
is deprecated.
r3.showdspf uses the Motif widget (so you also need a
Motif library, e.g. Lesstif or OpenMotif).
[http://grass.itc.it/pipermail/grassuser/2006-December/037475.html Glynn Clements at GRASS-user mailing list]

=== Parallelized compilation on multi-core CPUs ===

You can dramatically accelerate the compilation of the GRASS code with the -j flag of "make" if you have a multi-core CPU system. This determines the maximum number of jobs to have running at once, so cores don't have to sit idle waiting for jobs on other cores to complete. A good rule of thumb for this value is <tt>number_of_cores * 1.5</tt>, but note that setting any higher than the actual number of cores will only affect the timing slightly. For example, on a dual-core processor:
make -j 4



== GRASS-GDAL plugin ==

* see [[Compile and install GRASS and QGIS with GDAL/OGR Plugin]]

== Addons ==

Please note that the installation of [[AddOns/GRASS_6|Addons]] can be easily done with the {{cmd|g.extension}} manager. The compile instructions below are aiming at own development.

=== Compiled modules ===

This is the general way which works for C modules as well as scripts (Python or Shell/Bash modules) which has HTML documentation.

'''Requirements:'''

Either:
* a binary GRASS package, or
* source code which has been prepared with:
./configure [opionally flags]
make libs

Each of the [[GRASS_AddOns|addon]] modules should come with a Makefile. To compile it, just run:
make MODULE_TOPDIR=/path/to/grass64/

Note that the <tt>/path/to/grass64</tt> has to be absolute, not relative.

If using Bash it may be useful to set that up as an alias:
alias gmake64='make MODULE_TOPDIR=/path/to/grass64/'

Installation (perhaps requires "sudo"):
make MODULE_TOPDIR=/path/to/grass64/ install

Note: Compiled addons may require a re-compilation if you changed/updated your GRASS standard binaries.

==== If binary comes with a -dev package ====

''(work in progress, this text states how it eventually will be :)''
Nowadays one does not need to the source code, nor compiling GRASS by oneself to be able to add add-ons. On Debian, you can just install the grass-dev package and then run:
make MODULE_TOPDIR=/usr/lib/grass64/ INST_DIR=/usr/lib/grass64/

The grass-dev package essentially provides GRASS's <tt>include</tt> header files and Make configuration files.

=== Scripts ===

If the addon module is a script, it is sufficient to copy it into the (GRASS binaries) path somewhere. Alternatively, install addons into a separate GRASS addons binaries/scripts directory which is easier to maintain. It avoids getting clobbered every time you reinstall GRASS. To use these separately stored scripts, set and export the GRASS_ADDON_PATH environment variable before starting GRASS and it will automatically be added to the module search path (see the {{cmd|variables}} help page). To simplify this, do for example:

# add in $HOME/.bashrc:
GRASS_ADDON_PATH=/usr/local/grass/addons/
export GRASS_ADDON_PATH

Make sure that the script is executable, then just call it in GRASS typing the filename. Python scripts need to be called writing the extension as well, like:

GRASS 6.5.svn (spearfish60):~ > v.krige.py

[[Category:Development]]
[[Category:Documentation]]
[[Category:Installation]]