GRASS-Wiki - User contributions [en]

GRASS GIS ISPRS Prague meetup 2016

2016-07-15T12:05:56Z

⚠️Guano: /* People */

People contributing or interested in contributing to GRASS GIS are welcome to meet during [http://www.isprs2016-prague.com/ ISPRS Congress] held in Prague 12-19th July 2016, Czech Republic (see also [[ISPRS XXIII Congress 2016: GRASS related workshops and presentations|presentations related to GRASS GIS]]).

Details about the meetings will be published later or during the congress.

Contact person: [[User:Landa|Martin Landa]] (landa.martin gmail com)

== Meetings ==

We are doing more than one meeting to discuss everything from GSoC to general visions.

=== Tuesday July 12 ===

When: 16:00 - 22:00

Where: [http://cafeprostoru.cz/ Cafe Prostoru] at [http://www.techlib.cz/en/ NTK] (Národní Technická Knihovna, National Technical Library), [http://www.openstreetmap.org/#map=19/50.10381/14.39070 OpenStreetMap], [https://goo.gl/maps/zjAxfi5aKiP2 Google Maps]

Topics:
* cartography GSoC
** vector legend implementation
** transparent fill in d.northarrow ({{changeset|68950}})
* north arrows pictures in user manual ({{changeset|68946}}), update and unification of north arrow and scale bar pictures ({{changeset|68947}}, {{changeset|68948}})
* reprojection for wxGUI data tab ({{changeset|68949}})

=== Wednesday July 13 ===

When: 19:00 - 22:00

Where: [http://cafeprostoru.cz/ Cafe Prostoru] at [http://www.techlib.cz/en/ NTK] (Národní Technická Knihovna, National Technical Library), [http://www.openstreetmap.org/#map=19/50.10381/14.39070 OpenStreetMap], [https://goo.gl/maps/zjAxfi5aKiP2 Google Maps]

Topics:
* cartography, GSoC
* Bible

=== Thursday July 14 ===

When: 18:30 - 22:00

Where:

* [http://pracovna.cz/kavarna/ Pracovna Café] {{bullet}} [http://www.openstreetmap.org/node/3219010176 OpenStreetMap] {{bullet}} [https://goo.gl/maps/jzinnJGfBH42 GoogleMaps]
* Metro: Vysehrad (C) → Hlavni nadrazi (C) → Tram 5 (Husinecka)
* For ISPRS participants: meet with us at 18:15 near the registration desk

Topics:
* GSoC

=== Friday July 15 ===

When: 12:45 - 21:00

Where:

* [http://www.fsv.cvut.cz Faculty of Civil Engineering, CTU in Prague] {{bullet}} [http://www.openstreetmap.org/node/2753192957 OpenStreetMap] {{bullet}} [https://goo.gl/maps/id1K2hzN4dw GoogleMaps]
* For ISPRS participants:
** If you want to go from ISPRS Meet with us at 12:15 near the registration desk (we will go for lunch near the meetup place)
** Travel yourself by metro: Vysehrad (C) → Muzeum (change line A - green) → Dejvicka (A)
* Lunch: [http://uprofesora.cz/ U Profesora], Jugoslávských partyzánů 5, Praha 6 at 12:45
* Meetup: Meet at the main entrance to Faculty of Civil Engineering (see above), Thákurova 2077 at 14:30, write to [[User:Landa|Martin Landa]] (landa.martin gmail com) if you plan to come later (so we can pick you up at the desk)
* Dinner: to be scheduled, see this page later

Topics:

* GSoC
* 7.2 release
* v.clip addons

== People ==

Are you going to ISPRS Congress, or you are just in Prague and willing to meet? Please put your name to the table bellow.

{| 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;"
|-
! No
! Participant
! Arrival
! Departure
! Country
! ISPRS participation
! Note
|-
| 1
| Martin Landa
| 12/7
| 19/7
| CZ
| yes
| Contact person
|-
| 2
| Helena Mitasova
| 15/7
| 19/7
| US
| yes
|
|-
| 3
| Vaclav Petras
| 12/7
| 19/7
| US
| yes
|
|-
| 4
| Anna Petrasova
| 12/7
| 19/7
| US
| yes
|
|-
| 5
| Yasuharu Yamada
| 16/7
| 18/7
| JP
| yes
|
|-
| 6
| Adam Laza
| 12/7
| 19/7
| CZ
| no
|
|-
| 7
| Ondrej Pesek
| 12/7
| 19/7
| CZ
| no
|
|-
| 8
| Stepan Turek
| 12/7
| 16/7
| CZ
| no
| just evenings after work
|-
|-
| 9
| Zofie Cimburova
| 14/7
| 18/7 or 19/7
| CZ
| no
|
|-
| 10
| Brendan Harmon
| 12/7
| 19/7
| US
| yes
|
|-
| 11
| Eva Stopkova
| 13/7
| 19/7
| SK
| no
|
|-
| 12
| Carlos Grohmann
| 08/7
| 19/7
| BR
| yes
|
|-}

[[Category: Workshops]]
[[Category: Code Sprint]]
[[Category: 2016]]

GRASS in the wild

2016-06-08T23:01:58Z

⚠️Guano: Removed list of publications by Grohmann (me), added CiteULike link and fixed link for Springer Encyclopaedia bibtex file

Huge lists of GRASS GIS related articles:
* Zotero.org: GIS group, tag "GRASS GIS": https://www.zotero.org/groups/gis/items/tag/GRASS%20GIS
* Google Scholar: [http://scholar.google.com/scholar?q=GRASS+GIS GRASS GIS articles in Google Scholar] (activate Bibtex output in "Scholar settings")
*CiteULike, tag "GRASS": http://www.citeulike.org/tag/grass

The bibtex entry for the GRASS entry in the Springer Encyclopaedia of GIS can be downloaded from [http://citation-needed.services.springer.com/v2/references/10.1007/978-0-387-35973-1_548?format=bibtex&flavour=citation here]

AddOns/GRASS7/raster

2014-05-28T19:49:45Z

⚠️Guano: Added r.roughness.vector module

{{AddOns}}

See also
svn co https://svn.osgeo.org/grass/grass-addons/grass7/raster/

==== r.agent ====

{{AddonSrc|raster|r.agent|version=7}} shall provide an inital base for organizing worlds with raster playgrounds and agents in. Still under development.

: '''Author:''' Michael Lustenberger

==== r.area ====

{{AddonSrc|raster|r.area|version=7}} can be used to remove, areas smaller than treshold, reclass according areas (similar to r.reclass area, but work in cells, not hectares and allow create more classes)

: '''Author:''' Jarek Jasiewicz

==== r.basin ====

{{AddonSrc|raster|r.basin|version=7}} generates the main morphometric parameters of the basin starting from the digital elevation model and the coordinates of the basin's closing section.

: '''Author:''' Margherita Di Leo, Massimo Di Stefano

==== r.convergence ====

....

==== r.convert ====

....

==== r.crater ====

{{AddonSrc|raster|r.crater|version=7}}: estimates the size of a gravity dominated impact crater or the projectile that made it.

: '''Author:''' Yann Chemin

==== r.damflood ====

{{AddonSrc|raster|r.damflood|version=7}}: The definition of flooding areas is of considerable importance for both the risk analysis and the emergency management.
This command is an embedded GRASS GIS hydrodynamic 2D model that allows to obtain flooding area due to a failure of a dam, given the geometry of the reservoir and of the downstream area, the initial conditions and the dam breach geometry.

: '''Authors:''' Roberto Marzocchi and Massimiliano Cannata

==== r.hydrodem ====

{{AddonSrc|raster|r.hydrodem|version=7}} applies hydrological conditioning (sink removal) to a required input elevation map. If the conditioned elevation map is going to be used as input elevation for r.watershed, only small sinks should be removed and the amount of modifications restricted with the mod option. For other modules such as r.terraflow or third-party software, full sink removal is recommended.

: '''Author:''' Markus Metz

==== r.fidimo ====

{{AddonSrc|raster|r.fidimo|version=7}}: [http://jradinger.wordpress.com/fidimo/ FIDIMO] is a raster tool to model fish dispersal in river networks. Therefore, empirical leptokurtic fish dispersal kernels are used to model movement distances in rasterized river networks, considering movement barriers. FIDIMO allows predicting and simulating spatio-temporal patterns of fish dispersal.

Radinger, J., Kail, J. and Wolter, C. (2013) FIDIMO – A Free and Open Source GIS based dispersal model for riverine fish. ''Ecological Informatics'' 1–10. DOI: [http://dx.doi.org/10.1016/j.ecoinf.2013.06.002 10.1016/j.ecoinf.2013.06.002]

: '''Author:''' Johannes Radinger

==== r.flip ====

{{AddonSrc|raster|r.flip|version=7}} Flips a raster map

==== r.forestfrag ====

{{AddonSrc|raster|r.forestfrag|version=7}} is a shell script that creates a forest fragmentation index from a GRASS raster map (where forest=1, non-forest=0) based on a method developed by Riitters et. al (2000). The index is computed using an moving window of user-defined size (default = 3).

:'''Author:''' Maning Sambale, Stefan Sylla and Paulo van Breugel

==== r.fuzzy ====

....
* {{AddonSrc|raster|r.fuzzy.logic|version=7}}
* {{AddonSrc|raster|r.fuzzy.set|version=7}}
* {{AddonSrc|raster|r.fuzzy.system|version=7}}

==== r.gdd ====

{{AddonSrc|raster|r.gdd|version=7}} calculates (accumulated) growing degree days (GDDs) and Winkler indices from several input maps with temperature data for different times of the day.

: '''Author:''' Markus Metz

==== r.hants ====

{{AddonSrc|raster|r.hants|version=7}} performs a harmonic analysis of time series in order to estimate missing values and identify outliers. For each input map, an output map with the suffix suffix (default: _hants) is created.

: '''Author:''' Markus Metz

==== r.hazard.flood ====

{{AddonSrc|raster|r.hazard.flood|version=7}} is an implementation of a fast procedure to detect flood prone areas. The exposure to flooding may be delineated by adopting a topographic index (TIm) computed from a DEM. The portion of a basin exposed to flood inundation is generally characterized by a TIm higher than a given threshold, tau. The threshold is automatically determinated from the cellsize. The proposed procedure may help in the delineation of flood prone areas especially in basins with marked topography. The use of the modified topographic index should not be considered as an alternative to standard hydrological-hydraulic simulations for flood mapping, but it may represent a useful and rapid tool for a preliminary delineation of flooding areas in ungauged basins and in areas where expensive and time consuming hydrological-hydraulic simulations are not affordable or economically convenient.

: '''Author:''' Margherita Di Leo

==== r.houghtransform ====

....

==== r.hydrodem ====

{{AddonSrc|raster|r.hydrodem|version=7}} applies hydrological conditioning (sink removal) to a required input elevation map. If the conditioned elevation map is going to be used as input elevation for r.watershed, only small sinks should be removed and the amount of modifications restricted with the mod option. For other modules such as {{cmd|r.terraflow}} or third-party software, full sink removal is recommended.

: '''Author:''' Markus Metz

==== r.in.srtm.region ====

{{AddonSrc|raster|r.in.srtm.region|version=7}} for download and import of SRTM for the current region. If needed, tiles are patched together and optionally holes interpolated.

: '''Author:''' Markus Metz

==== r.in.wms2 ====

....

==== r.massmov ====

....

==== r.mess====

{{AddonSrc|raster|r.mess|version=7}}, a shell script to compute the "Multivariate Environmental Similarity Surfaces" (MESS). It uses R and spgrass6 package.
Runs on grass 6.4 and 7.0 (tested on Linux only).

: '''Author:''' Paulo van Breugel

==== r.modis ====

'''{{AddonSrc|raster|r.modis|version=7}}''': The '''r.modis''' suite is a toolset to import MODIS satellite data in GRASS GIS. It uses the [http://gis.cri.fmach.it/pymodis/ pyModis library] and the MODIS Reprojection Tool software to convert, mosaik and process MODIS data. It is written in Python language for GRASS 7, developed during the Google Summer of Code 2011.

See also [[R.modis]]:

: '''Author:''' Luca Delucchi (GSoC mentor: Markus Neteler)

==== r.northerness.easterness ====

{{AddonSrc|raster|r.northerness.easterness|version=7}}: Calculations of northerness, easterness and the interaction between northerness and slope.

: '''Author:''' Helmut Kudrnovsky

==== r.regression.series ====

'''{{AddonSrc|raster|r.regression.series|version=7}}''' is a module to calculate linear regression parameters between two time series, e.g. NDVI and precipitation.

: '''Author:''' Markus Metz

==== r.roughness.vector ====

'''{{AddonSrc|raster|r.roughness.vector|version=7}}''' is a module to calculate surface roughness as vector dispersion, using a moving-window approach. Resulting maps are: Vector Strength (R) and Inverted Fisher's k parameter.

: '''Author:''' Carlos Henrique Grohmann and Helmut Kudrnovsky

==== r.stream.basins ====

{{AddonSrc|raster|r.stream.basins|version=7}}: Calculate basins according user input.

==== r.stream.channel ====

{{AddonSrc|raster|r.stream.channel|version=7}}: Calculate some local properties of the stream network. It is supplementary module for r.stream.order and r.stream.distance to investigate channel subsystem.

==== r.stream.distance ====

{{AddonSrc|raster|r.stream.distance|version=7}}: Calculate distance to and elevation above streams and outlets according user input. It can work in stream mode where target are streams and outlets mode where targets are outlets.

==== r.stream.extract ====

{{AddonSrc|raster|r.stream.extract|version=7}}: Stream network extraction.

==== r.stream.order ====

{{AddonSrc|raster|r.stream.order|version=7}}: Calculate Strahler's and Horton's stream order Hack's main streams and Shreeve's stream magnitude. It uses r.watershed or r.stream.extract output files: stream, direction and optionally accumulation. Output data can be either from r.watershed or r.stream.extract but not from both together.

==== r.stream.segment ====

{{AddonSrc|raster|r.stream.segment|version=7}}: The module is designed to inverstigate network lineaments and calculate angle relations between tributaries and its major streams.

==== r.stream.slope ====

{{AddonSrc|raster|r.stream.slope|version=7}}: Calculates the difference between elevation of current cell and downstream cell, gradient and max curvature on the basis of a flow direction map. It can be used to calculate the directional slope using a flow direction map.

==== r.stream.snap ====

{{AddonSrc|raster|r.stream.snap|version=7}}: is a supplementary module for r.stream.extract and r.stream.basins to correct position of outlets or stream initial points as they do not lie on the streamlines.

==== r.stream.stats ====

{{AddonSrc|raster|r.stream.stats|version=7}}: Calculate Horton's and optionally Hack's statistics according to user input.

==== r.threshold ====

{{AddonSrc|raster|r.threshold|version=7}} finds optimal threshold for stream extraction.
....

==== r.to.vect.tiled ====

{{AddonSrc|raster|r.to.vect.tiled|version=7}} vectorizes the input raster map and produces several tiled vector maps covering the current region. Vectorizing a large raster map with {{cmd|r.to.vect}} can require a lot of memory. In these cases,r.to.vect.tiled can reduce memory usage by vectorizing each tile separately.

==== r.vif====

{{AddonSrc|raster|r.vif|version=7}}, a shell script to compute the variance inflaction factor (VIF) and the square root of the VIF.

: '''Author:''' Paulo van Breugel

==== r.vol.dem ====

{{AddonSrc|raster|r.vol.dem|version=7}} interpolates a voxel model from a series of DEMs by flood filling the voxel space in between.

Geomorphometry

2011-12-13T19:28:57Z

⚠️Guano: /* References */

== GRASS in Geomorphometry ==

=== Import and computing of DEMs ===

* Grid-based DEMs in various formats can be imported using the {{cmd|r.in.gdal}} command
* Elevation data represented by digitised contours or measured points can be imported using the {{cmd|v.in.ogr}} command that supports numerous vector formats
* Data given as an ASCII list of (x, y, z) coordinates can be imported with {{cmd|v.in.ascii}}
* Very dense ASCII point data (e.g. from LiDAR), can be directly converted to raster using {{cmd|r.in.xyz}} by performing a binning procedure based on different statistical measures (min, max, mean, range, etc.).

=== Useful commands ===
* {{cmd|d.polar}}
* {{cmd|r.drain}}
* {{cmd|r.flow}}
* {{cmd|r.mapcalc}}
* {{cmd|r.slope.aspect}}
* ...

== References ==
* Grohmann, C.H., 2004. Morphometric analysis in geographic information systems: applications of free software GRASS and R. Computers & Geosciences, 30(9-10), pp.1055-1067. http://dx.doi.org/10.1016/j.cageo.2004.08.002
* Grohmann, C.H., 2005. Trend-surfaces analysis of morphometric parameters: A case study in southeastern Brazil Computers & Geosciences, 31, 1005-1014. http://dx.doi.org/10.1016/j.cageo.2005.02.011
* Grohmann, C. H.; Riccomini, C. & Alves, F. M. , 2007. SRTM-based morphotectonic analysis of the Pocos de Caldas Alkaline Massif, southeastern Brazil Computers & Geosciences, 33, 10-19. http://dx.doi.org/10.1016/j.cageo.2006.05.002
* Grohmann, C. H. & Riccomini, C., 2009. Comparison of roving-window and search-window techniques for characterising landscape morphometry Computers & Geosciences, 35, 2164-2169. http://dx.doi.org/10.1016/j.cageo.2008.12.014
* Grohmann, C. H.; Smith, M. J. & Riccomini, C., 2010. Multiscale Analysis of Topographic Surface Roughness in the Midland Valley, Scotland Geoscience and Remote Sensing, IEEE Transactions on, 49, 1200-1213. http://dx.doi.org/10.1109/TGRS.2010.2053546
* Grohmann, C. H.; Riccomini, C. & Chamani, M. A. C., 2011. Regional scale analysis of landform configuration with base-level (isobase) maps Hydrology and Earth System Sciences, 15, 1493-1504. http://dx.doi.org/10.5194/hess-15-1493-2011
* Hengl, T. & Reuter, H.I., 2009. Geomorphometry : concepts, software, applications, Amsterdam; Oxford: Elsevier.
* Hofierka, J., Mitasova, H. & Neteler, M., 2009. Geomorphometry in GRASS GIS. In Developments in Soil Science. Elsevier, pp. 387-410. Available at: http://dx.doi.org/10.1016/S0166-2481(08)00017-2.
* Le Coz, M. et al., 2009. Assessment of Digital Elevation Model (DEM) aggregation methods for hydrological modeling: Lake Chad basin, Africa. Computers & Geosciences, 35(8), pp.1661-1670.

GRASS in the wild

2011-12-13T19:19:21Z

⚠️Guano: included more references

<pre>

@ARTICLE{Grohmann2011hess,
author = {Grohmann, C. H. and Riccomini, C. and Chamani, M. A. C.},
title = {{Regional scale analysis of landform configuration with base-level
(isobase) maps}},
journal = {Hydrology and Earth System Sciences},
year = {2011},
volume = {15},
pages = {1493--1504},
number = {5},
doi = {10.5194/hess-15-1493-2011}
url = {http://www.hydrol-earth-syst-sci.net/15/1493/2011/}
}

@ARTICLE{Grohmann2010ieee,
author = {Grohmann, C. H. and Smith, M. J. and Riccomini, C.},
title = {{Multiscale Analysis of Topographic Surface Roughness in the Midland
Valley, Scotland}},
journal = {Geoscience and Remote Sensing, IEEE Transactions on},
year = {2010},
volume = {49},
pages = {1200--1213},
number = {4},
doi = {10.1109/TGRS.2010.2053546}
}

@ARTICLE{Grohmann2009cageo,
author = {Grohmann, C. H. and Riccomini, C.},
title = {{Comparison of roving-window and search-window techniques for characterising
landscape morphometry}},
journal = {Computers \& Geosciences},
year = {2009},
volume = {35},
pages = {2164-2169},
doi = {10.1016/j.cageo.2008.12.014}
}

@ARTICLE{Grohmann_Steiner_2008ijgis,
author = {Grohmann, C. H. and Steiner, S. S.},
title = {{SRTM resample with Short Distance-Low Nugget Kriging}},
journal = {International Journal of Geographical Information Science},
year = {2008},
volume = {22},
pages = {895--906},
number = {8},
doi = {10.1080/13658810701730152},
keywords = {grass, kriging, srtm}
}

@ARTICLE{Grohmann2007cageo,
author = {Grohmann, C. H. and Riccomini, C. and Alves, F. M.},
title = {{SRTM-based morphotectonic analysis of the Po\c cos de Caldas Alkaline
Massif, southeastern Brazil}},
journal = {Computers \& Geosciences},
year = {2007},
volume = {33},
pages = {10--19},
doi = {10.1016/j.cageo.2006.05.002},
keywords = {grass, geomorphometry, isobase, srtm}
}

@ARTICLE{Grohmann2005cageo,
author = {Grohmann, C. H.},
title = {{Trend-surfaces analysis of morphometric parameters: A case study
in southeastern Brazil}},
journal = {Computers \& Geosciences},
year = {2005},
volume = {31},
pages = {1005--1014},
doi = {10.1016/j.cageo.2005.02.011},
keywords = {grass, geomathematics}
}

@ARTICLE{Grohmann2004cageo,
author = {Grohmann, C. H.},
title = {{Morphometric analysis in Geographic Information Systems: applications
of free software GRASS and R}},
journal = {Computers \& Geosciences},
year = {2004},
volume = {30},
pages = {1055--1067},
doi = {10.1016/j.cageo.2004.08.002},
keywords = {grass, geomorphometry}
}

</pre>

The bibtex file for the GRASS entry in the Springer Encyclopaedia of GIS can be downloaded here:

[http://www.perlomat.de/springer_full.bib Springer_full.bib]

-----
See also [http://scholar.google.com/scholar?sourceid=mozclient&ie=utf-8&oe=utf-8&q=grass+gis GRASS GIS articles in Google Scholar] (activate Bibtex output in "Scholar settings")

AddOns

2009-08-11T15:15:30Z

⚠️Guano: /* r.roughness */

This page contains references to user contributions and add-ons (the original GRASS GIS software can be downloaded [http://grass.osgeo.org/download/index.php here]).

__TOC__

== AddOns source code repository ==

The AddOns source code is hosted in [http://svn.osgeo.org/grass/grass-addons/ GRASS-AddOns SVN repository].

To checkout:

svn checkout <nowiki>https://svn.osgeo.org/grass/grass-addons/</nowiki> grass-addons

Please read [http://trac.osgeo.org/grass/wiki/HowToContribute#WriteaccesstotheGRASS-Addons-SVNrepository How to get write access to the GRASS-Addons-SVN repository] and contact the [http://lists.osgeo.org/mailman/listinfo/grass-dev grass-dev] mailing list if you would like to host your module there.

== Building and installing Addons ==

* see the [[Compile and Install#Addons]] wiki page

== Adding something new ==

Please announce your add-on to the GRASS users' mailing list so that others may be aware of your work. Also please consider adding your module to one of the [[Applications]] pages.

=== Copyright and licensing information ===

''Please be sure to include copyright and licensing information in the header comments of your code so that others may know how they can use, extend, modify, and redistribute your work.''

e.g. at the top of a shell script:
<pre>
#!/bin/sh
############################################################################
#
# MODULE: v.in.e00
#
# AUTHOR(S): Markus Neteler, Otto Dassau
#
# PURPOSE: Import E00 data into a GRASS vector map
# Imports single and split E00 files (.e00, .e01, .e02 ...)
#
# COPYRIGHT: (c) 2004, 2005 GDF Hannover bR, http://www.gdf-hannover.de
#
# This program is free software under the GNU General Public
# License (>=v2). Read the file COPYING that comes with GRASS
# for details.
#
#############################################################################
#
# REQUIREMENTS:
# - avcimport: http://avce00.maptools.org

[script follows]
</pre>

=== Coding standards ===

Please have a look at our [http://grass.osgeo.org/grass63/source/SUBMITTING_SCRIPTS Shell script coding standards] before submitting here.

There are other coding standards given for modules written in C, Tcl/Tk, and Python''(?)'' located in the GRASS source code.

=== Documenting your code ===

You can have an help page template auto-generated by using the GRASS [[module command line parser | command line parser]] with the <tt>--html-description</tt> command line option. Please, see also the [http://grass.ibiblio.org/grass63/manuals/html63_user/g.parser.html g.parser help page]

== Miscellaneous Add-ons ==

* [http://trac.osgeo.org/grass/browser/grass-addons/misc/utm_which_zone utm_which_zone.sh] is a shell script to determine UTM zone from Lat/Lon input. Requires [http://www.octave.org Octave] or Matlab to be installed. A shell-only version is [http://dcalvelo.free.fr/grass/utm_which_zone_sh.sh available] which only requires awk. '''Authors''': Hamish Bowman (Octave part), Markus Neteler (shell script wrapper), Daniel Calvelo (sh+awk version)

* Perl scripts for converting data forth and back between Excel files and PostgreSQL: [http://dcalvelo.free.fr/grass/pg2xls.pl pg2xls.pl] reads data from PostgreSQL and produces an excel workbook; [http://dcalvelo.free.fr/grass/xls2sql.pl xls2sql.pl] reads excel files and outputs SQL statements to be fed into an RDBMS. Both scripts need modules from [http://www.cpan.org CPAN], especially [http://search.cpan.org/dist/Spreadsheet-ParseExcel/ Spreadsheet::ParseExcel] for xls2sql.pl and [http://search.cpan.org/~tmtm/Spreadsheet-WriteExcel-FromDB Spreadsheet::WriteExcel::FromDB] and its dependencies for pg2sql.pl. Check the source headers for more info. '''Authors:''' Daniel Calvelo (xls2sql.pl), Markus Neteler (pg2xls.pl)

* [http://dream.lrrl.arch.tu-muenchen.de/~wqual/perl/dbf2sql.tgz dbf2sql] is a Perl script for translating dbf-tables into a sql-command. dbf-tables are read using dbfdump-command from dbd-xbase-perl module ([http://search.cpan.org/~janpaz/DBD-XBase-0.241/ dbd::xbase] and [http://search.cpan.org/~jv/Getopt-Long-2.35/lib/Getopt/Long.pm getopt::long] have to be installed from CPAN first). There are problems, if the last column of the table contains characters. Suggestions for improvements welcome! '''Author:'''Wolfgang Qual

* [http://www.igc.usp.br/pessoais/guano/downloads/azimuth2.c azimuth2.c] is a small C program to calculate the azimuth and length of vector lines exported by GRASS-GIS as ASCII files (like this: v.out.ascii input=vector output=ascii format=standard). It is useful for create rose diagrams of lineament maps. Improvements on the original code after suggestions by Örs Téglásy, Hungary. '''Author:''' Carlos Henrique Grohmann

==GRASS 4.x==

===Raster add-ons for GRASS 4===

* MAGICAL Software: The MAGICAL software comprises a suite of three programs that provide a multi-agent simulation extension for the GRASS GIS software. http://www.ucl.ac.uk/~tcrnmar/simulation/magical/magical.html

==GRASS 5.x==

===Vector add-ons for GRASS 5===

* See here: http://grass.osgeo.org/download/addons.php

===Raster add-ons for GRASS 5===

* See here: http://grass.osgeo.org/download/addons.php

* [http://www.valledemexico.ambitiouslemon.com/gwmodelling.html r.gmtg] The groundwater modelling tool for grass. A module to use MODFLOW within GRASS. '''Author''': Jaime Carrera

* [http://www.bowdoin.edu/~ltoma/research.html r.terracost] Scalable approach for computing least-cost-path surfaces on massive grid terrains. For GRASS 5.3. '''Lead author''': Laura Toma
:Newer version available via SVN:
svn co https://svn.osgeo.org/grass/grass-addons/raster/r.terracost

==GRASS 6.x==

=== Vector add-ons ===

See also

svn co https://svn.osgeo.org/grass/grass-addons/vector

==== v.adehabitat.clusthr, v.adehabitat.kernelUD, v.adehabitat.mcp ====

: Tools to calculate home ranges of animals
: '''Author:''' Clement Calenge

Available via SVN:
svn co https://svn.osgeo.org/grass/grass-addons/vector/adehabitat

==== v.append ====

: [http://www.public.asu.edu/~cmbarton/files/grass_scripts/v.append v.append] is a shell script combining two vector files AND their associated attribute tables. The vector files should be of the same type and, for best results, should have identically formatted attribute tables.

: '''Author:''' Michael Barton

==== v.autokrige ====

: [http://trac.osgeo.org/grass/browser/grass-addons/vector/v.autokrige/v.autokrige.py v.autokrige] achieves automatic ordinary kriging from GRASS sites (vector point data), using R with spgrass6 (RGRASS) and automap packages.

: '''Author:''' Mathieu Grelier

==== v.breach ====

: [http://www.sieczka.org/programy_en.html v.breach] creates vector maps of lines and points of continously lowering elevation down the input watercourses, based on the input raster DEM.

: '''Author:''' Maciej Sieczka

==== v.colors ====

: {{cmd|v.colors}} ''moved into main archive''

==== v.count.points.sh ====

: [http://wiki.iosa.it/dokuwiki/spatial_analysis:feature_count v.count.points.sh] counts point features in areas, generates table good as input to d.vect.chart.

: '''Author:''' Stefano Costa

==== v.digatt ====

: [http://phygeo7.geo.uni-augsburg.de/gis2/scripts/v.digatt v.digatt] (shell script) Interactively assign numeric table attributes to series of vector objects. It is meant to be effective by avoiding to type in the attribute value for all single objects again and again. The user is prompted for typing in an attribute value which is assigned to all objects selected by mouseclick afterwards. Next the display is redrawn after updating the table column. Zooming allows to change the region before the old value can be reused or a new one can be typed in (or copied by mouse from another object) in order to assign it to the next series of objects etc. It is tested not very extensively yet. Therefore better work with a copy of your map and consider using v.digit or d.what.vect -e alternatively. [http://phygeo7.geo.uni-augsburg.de/gis2/scripts/v.digatt.png screenshot].

: '''Author:''' Andreas Philipp

==== v.dip ====

: [http://marcin.slodkowski.googlepages.com/v.dip.tgz v.dip] creates points of thickness vectors from the vectors of strike and dip angles. The v.dip is the main ANSI C core program. Program so-called v.dip can run without GRASS environment.

: '''Author:''' Marcin Slodkowski

==== v.flip ====

: [http://www.sieczka.org/programy_en.html v.flip] flips the direction of selected vector lines (redundant since GRASS 6.3 - there is "v.edit tool=flip").

: '''Author:''' Maciej Sieczka

==== v.group ====

: [http://www.shockfamily.net/cedric/grass/v.group v.group] generates a new vector map with the same geometry as an existing map. The new map has categories and a table based on grouping by the values in certain columns of the existing map's table. The values in these columns are preserved in the table for the new map. It's like a v.reclass that preserves data.

: '''Author:''' Cedric Shock

==== v.in.gama ====

: Converts [http://www.gnu.org/software/gama/ GNU GaMa] XML output file to a GRASS vector map layer.

:'''Author:''' Martin Landa

svn co https://svn.osgeo.org/grass/grass-addons/vector/v.in.gama

==== v.in.gshhs ====

: [http://trac.osgeo.org/grass/browser/grass-addons/vector/v.in.gshhs v.in.gshhs] imports [http://www.soest.hawaii.edu/wessel/gshhs/gshhs.html GSHHS] shorelines into a GRASS vector map. GSHHS data are automatically reprojected to the current location.

:'''Authors:''' several, updated to GRASS 6 by Markus Metz

==== v.in.ncdc ====

: [http://trac.osgeo.org/grass/browser/grass-addons/vector/v.in.ncdc v.in.ncdc] imports an [http://www.ncdc.noaa.gov NCDC] stn file (station data) into a GRASS vector map.

: '''Author:''' Huidae Cho

==== v.in.postgis ====

: [http://trac.osgeo.org/grass/browser/grass-addons/vector/v.in.postgis/v.in.postgis.py v.in.postgis] Create a GRASS layer from any sql query on PostGIS data.

: '''Author:''' Mathieu Grelier

==== v.in.osm ====

: [http://kripton.kripserver.net/software/v.in.osm/ v.in.osm]: OpenStreetMap import into GRASS. Yet only supports deprecated API 0.4, will be modified to work with API 0.5 some time soon.

: '''Author:''' Jannis Achstetter

: See also [http://hamish.bowman.googlepages.com/gpsdrivefiles#osm osm2grass.sh] by H Bowman

==== v.in.ovl ====

: [http://grasslab.gisix.com/scripts/v.in.ovl/ v.in.ovl] is a shell script that imports an ASCII vector file created with TOP10|25|50 or similar products.

: '''Author:''' Peter Löwe

==== v.krige ====

: [[V.autokrige_GSoC_2009 | v.krige]] aims to integrate R functions for kriging (packages automap, gstat, geoR) in a trasparent way. '''Still beta''': testing welcome.

: '''Author:''' Anne Ghisla, as Google Summer of Code 2009 project

: See also [[GRASS_AddOns#v.autokrige]] by Mathieu Grelier

==== v.lda ====

: [http://www.public.asu.edu/~cmbarton/files/grass_scripts/v.lda v.lda] is a shell script for calculating Ian Johnson's (U. Sidney) Local Density Analysis values to measure clustering of point data at different neighborhood radii. There is an option to create a simple line graph of the results. There have been reports of problems creating the line graph on Cygwin installations of GRASS.

==== v.line.center ====

: [http://www.sieczka.org/programy_en.html v.line.center] creates a points vector map with each point located in the middle of the length of the input vector line.

: '''Author:''' Maciej Sieczka

==== v.lmeasure ====

: [http://ngeo.de/grassstuff/v.lmeasure v.lmeasure] and [http://ngeo.de/grassstuff/v.revlmeasure v.revlmeasure] are two perl scripts that place equidistant vector points along a given arbitrary vector line starting from the beginning or end of the vector line, respectively. Resulting vector points are labeled with the distance from origin.

: '''Author:''' Mats Schuh

==== v.out.ascii.db ====

: [http://trac.osgeo.org/grass/browser/grass-addons/vector/v.out.ascii.db v.out.ascii.db] is a shell script for exporting vector point data coordinates and selected attribute columns to either a file or to the console.
: ''Superseded in GRASS 6.4 by the new v.out.ascii columns= option.''

: '''Author:''' Hamish Bowman

==== v.out.ascii.mat ====

: [http://trac.osgeo.org/grass/browser/grass-addons/vector/v.out.ascii.mat v.out.ascii.mat] is a shell script for exporting vector polygon and polyline data into an ASCII text file suitable for loading into Matlab (or [http://www.gnu.org/software/octave/ Octave]).

: '''Author:''' Hamish Bowman

==== v.out.gmt ====

: [http://trac.osgeo.org/grass/browser/grass-addons/vector/v.out.gmt v.out.gmt] is a shell script that exports a polygon vector file into GMT xy file. psbasemap code was copied from Hamish's r.out.gmt.

: '''Author:''' Huidae Cho, Hamish Bowman, Dylan Beaudette

==== v.out.kml ====

: [http://grasslab.gisix.com/scripts/v.out.kml/ v.out.kml] is a shell script that exports a vector file into a KML file for Google Earth or Worldwind.

: '''Author:''' Peter Löwe

==== v.out.svg ====

: [http://svg.cc/grass/index.html v.out.svg] is a module that exports SVG notation along with optional attribute data directly from GRASS 6.x vector layers. Now part of [http://svn.osgeo.org/grass/grass/trunk/vector/v.out.svg/ grass6-svn].

: '''Author:''' Klaus Förster

==== v.random.cover ====

: [http://trac.osgeo.org/grass/browser/grass-addons/vector/v.random.cover v.random.cover] is a shell script for creating random points constrained within an irregularly shaped vector area. (v.random places points only in current region rectangle). Optionally the user can upload raster values at the points. See also '<tt>r.random cover= vector_output=</tt>'

: '''Author:''' Hamish Bowman

==== v.rasterbounds ====

: [http://les-ejk.cz/programs v.rasterbounds] is a shell script for creating polygon-vector file of rasterfile boundaries. The best version of GRASS is 6.1+. If you are using GRASS < 6.1, you have to be in the same mapset as your raster maps are from.

: '''Author:''' Jachym Cepicky

==== v.sample.buffer [broken link, please update or delete]====

: [http://www.clubwebcanada.ca/twiens/v.sample.buffer.tgz v.sample.buffer] is a shell script that samples rasters in buffers of a specified size around features in a specified vector file. Sampling results are added as attributes to the vector file. This script was designed for sampling vegetation indices and DEM derived attributes for bird point counts. Sampling results can be one or more basic statistics such as mean, range, max, etc.

: '''Author:''' Trevor Wiens

==== v.select.region ====

: [ftp://gsca.nrcan.gc.ca/outgoing/Patton/Grass/Scripts/v.select.region.tar.bz2 v.select.region] is a shell script that prints out the names of all vectors matching an input search pattern that has geometry (points, line, areas) that fall within a region bounded by an existing vector map, or within the current Grass region.

: '''Author:''' Eric Patton

==== v.selmany ====

: [http://svn.osgeo.org/grass/grass-addons/vector/v.selmany/v.selmany v.selmany] is a shell script that allows to interactively select a set of vector objects on a given layer, then assign them attribute values in a connected database table. The script runs on the command line prompt and within a graphic monitor ; it does not work with DBF driver.

: '''Author:''' Vincent Bain

==== v.surf.icw ====

: [http://trac.osgeo.org/grass/browser/grass-addons/vector/v.surf.icw v.surf.icw] is an IDW interpolation method using true distance cost instead of euclidean shortest distance, i.e. ''as the fish swims around an island'' not ''as the bird flies''. This will cleanly travel around hard barriers and a cost surface map may be used to model expensive-cross barriers. Input data points do not need direct line of sight to be considered, but should be kept to less than one hundred as the module becomes very computationally expensive. A number of radial basis function options are available. ([http://grass.osgeo.org/wiki/Image:Inlets_03_SurfSal_icw_big.png screenshot])

: '''Author:''' Hamish Bowman

==== v.surf.idwpow ====

: [http://www.geospatial.it/allegri/grass/v.surf.idwpow.zip v.surf.idwpow] integrates the common v.surf.idw algorithm with the exponential parameter for the distance weights

: '''Author:''' Giovanni Allegri

==== v.surf.krige [deprecated: use v.autokrige instead] ====

: v.surf.krige is a script that do a surface interpolation from vector point data by Kriging method. The interpolated value of a cell is determined by using an omnidirectional variogram model fitted starting from model parameter given by user shown from the experimental semi variogram produced by v.variogram. The script can perform also the Leave-One-out cross validation to test the variogram model "fitted by eye" and an automatic fitted variogram model. The cross validation helps the user to choose the best variogram model to interpolate own data.

: '''Author:''' Pierluigi De Rosa.

==== v.strahler ====

: [http://www.pois.org/florian/downloads/grass/v.strahler.tgz v.strahler] is a module that calculates the Strahler Order for all lines of a given dendritic network.

: '''Author:''' Florian Kindl. Available via SVN:

svn co https://svn.osgeo.org/grass/grass-addons/vector/v.strahler

==== v.swathwidth ====

: [http://trac.osgeo.org/grass/browser/grass-addons/vector/v.swathwidth v.swathwidth] creates a vector map representing the sea bottom coverage of a multibeam (swath) sonar survey.
: ([http://david.p.finlayson.googlepages.com/swathwidth Screenshots])

: '''Authors:''' David Finlayson, Hamish Bowman

==== v.thickness ====

: [http://marcin.slodkowski.googlepages.com/v.thickness.tgz v.thickness] creates points of thickness vectors from the vectors of strike and dip angles.The v.thickness is GUI GRASS script for v.dip.

: '''Author:''' Marcin Slodkowski

==== v.trees3d ====

: [http://les-ejk.cz/programs/ v.trees3d] is a module for making 3D trees from input vector point file.

: '''Author:''' Jachym Cepicky

==== v.trimesh ====
: [http://www.valledemexico.ambitiouslemon.com/vtrimesh.html v.trimesh] creates a triangular mesh from a vector map using areal constraints for refinement. It uses Jonathan Shewchuk's Triangle library.

: '''Author:''' Jaime Carrera

==== v.what.rast.buffer ====

: [http://trac.osgeo.org/grass/browser/grass-addons/vector/v.what.rast.buffer v.what.rast.buffer] is a script that calculates univariate statistics of raster map(s) from buffers around vector points. Results are written to a file. Resolution is taken from each input map.
: ''see also the [http://starspan.casil.ucdavis.edu StarSpan] software

: '''Author:''' Hamish Bowman

==== v.variogram [deprecated: use v.autokrige instead] ====

: v.variogram is a script that create an omnidirectional experimental semi-variogram. This scripts require R-statistics software installed on your machine. Now the script is updated to run on spgrass6 >= 0.3 and sp >= 0.9 [http://grass.osgeo.org/pipermail/statsgrass/2006-October/000455.html reply].

: '''Author:''' Ivan Marchesini, Pierluigi De Rosa.

==== AniMove ====

: [http://www.faunalia.it/animov/ AniMove] is software for analysis of animal movement and ranging behaviour using QGIS+GRASS+R.

:'''Authors:''' Support by Faunalia.it

==== Utilities ====

===== Shapemerge =====

: [http://perrygeo.googlecode.com/svn/trunk/gis-bin/shpmerge.sh shpmerge] merges all the shapefiles in the current directory into a single output shapefile

:'''Authors:''' Perrygeo

=== Raster add-ons ===

See also

svn co <nowiki>https://svn.osgeo.org/grass/grass-addons/raster</nowiki>

==== r.bilateral ====

: [http://les-ejk.cz/files/programs/grass/r.bilateral.tgz r.bilateral] Bilateral filter is an edge-preserving filter, which combines domain and range filtering. It is written in C language.

: '''Author:''' Jachym Cepicky

==== r.boxcount ====

: r.boxcount and r.boxcount.sh calculate the fractal dimension for a given map. These are versions for grass6 of [http://www.ucl.ac.uk/~tcrnmar/ Mark Lake's modules] for grass43.

: '''Authors:''' Mark Lake, grass6 port: Florian Kindl.

Available via SVN:

svn co https://svn.osgeo.org/grass/grass-addons/raster/r.boxcount/
svn co https://svn.osgeo.org/grass/grass-addons/raster/r.boxcount.sh/

==== r.colors.quantiles ====

: [http://trac.osgeo.org/grass/browser/grass-addons/raster/r.colors.quantiles/r.colors.quantiles r.colors.quantiles] is a shell script used to create raster colors rules based on nquantiles. It uses R and spgrass6 package (RGRASS).

: '''Authors:''' Mathieu Grelier

==== r.colors.stddev ====

: [http://hamish.bowman.googlepages.com/grass_color_maps r.colors.stddev] ''moved into main archive''

==== r.cpt2grass ====

: [http://hamish.bowman.googlepages.com/grass_color_maps r.cpt2grass] is a GRASS script for importing a [http://www.soest.hawaii.edu/gmt/ GMT] .cpt color table into GRASS. It can save to a text file suitable for r.colors or automatically apply the color table to a raster map. For a large collection of GMT .cpt files see http://sview01.wiredworkplace.net/pub/cpt-city/
: Other palette ideas from [http://geography.uoregon.edu/datagraphics/color_scales.htm Univ. Oregon] and [http://oceancolor.gsfc.nasa.gov/PRODUCTS/colorbars.html NASA/Goddard's OceanColor] (latter partially translated for use with GRASS on the [http://trac.osgeo.org/grass/browser/grass-addons/raster/r.colors.tools/palettes grass-addons SVN]).

: '''Author:''' Hamish Bowman

==== r.csr ====

: [ftp://gsca.nrcan.gc.ca/outgoing/Patton/Grass/Scripts/r.csr.tar.bz2 r.csr] integrates several Grass programs to produce colored, shaded-relief rasters in one step. Accepts single or multiple elevation/bathymetry maps as input; optionally will fill data holidays with 3x3 median filter, multiple times, if required; can apply color maps from a) input raster, b) another raster in MAPSET, or c) from a rules file; otherwise, rainbow colorbar is applied. Output colored, shaded-relief rasters can optionally be exported to tiff format if the appropriate flag is given. Shading parameters can be modified, though useful defaults are given.

: '''Author:''' Eric Patton

==== r.cva ====

: [http://www.ucl.ac.uk/~tcrnmar/GIS/r.cva.html r.cva] is a cumulative viewshed analysis module. It is an advanced version of the {{cmd|r.los}} program.

: '''Author:''' [http://www.ucl.ac.uk/~tcrnmar/ Mark Lake]

==== r.denoise ====

: [http://trac.osgeo.org/grass/browser/grass-addons/raster/r.denoise r.denoise] denoises (smooths/despeckles) topographic data, particular DEMs derived from radar data (including SRTM), using Xianfang Sun's [http://www.cs.cf.ac.uk/meshfiltering/index_files/Page342.htm denoising algorithm]. It is designed to preserve sharp edges and to denoise with minimal changes to the original data. An example is given [http://personalpages.manchester.ac.uk/staff/john.stevenson/mdenoise here].

: '''Author:''' John Stevenson

==== r.dominant_dir.m and r.calc_terraflow_dir.m ====

: [http://trac.osgeo.org/grass/browser/grass-addons/raster/r.terraflow.tools dominant_dir.m and calc_terraflow_dir.m] are two Matlab scripts for determining the dominant flow direction from a r.terraflow MFD map and converting into a GRASS aspect map for use with d.rast.arrow, etc.

: '''Author:''' Hamish Bowman

==== r.eucdist ====

: [http://david.p.finlayson.googlepages.com/r.eucdist r.eucdist] creates a raster map estimating the euclidean distance from known cells.

: '''Author:''' David Finlayson

==== r.fragment ====

: [ftp://gsca.nrcan.gc.ca/outgoing/Patton/Grass/Scripts/r.fragment.tar.bz2 r.fragment] fragments a raster into a user-defined set of smaller tiles according to an input number of rows and columns.
: '''Author:''' Eric Patton

==== r.game_of_life ====

: [http://trac.osgeo.org/grass/browser/grass-addons/raster/r.game_of_life r.game_of_life] is a shell script which runs Conway's classic Game of Life using GRASS raster modules. It is meant to demonstrate how easy it is to program cellular automata in GRASS as well as various 3D raster volume and time series visualization techniques.

: '''Author:''' Hamish Bowman

==== r.gauss ====

: [http://www.les-ejk.cz/files/programs/grass/r.gauss.tgz r.gauss] is Gaussian and Laplacian of Gaussian filter for GRASS. It is written in C language.

:'''Author:''' Jachym Cepicky

==== r.gradgrid4 ====

: [http://www.uibk.ac.at/geographie/personal/mergili/gradgrid4.zip gradgrid4] is a tool for interpolating values of discrete data points to a raster map, applying a local regression approach with a predictor raster. The model is based on shell and python scripts as well as an R batchfile. It was tested on Fedora Core 6 with GRASS 6.2.1 and R 2.5.1, but should work under most UNIX systems. After unzipping the gradgrid4 folder, store it at any place in your local file system. In the subfolder docs you can find a manual and a publication draft with a detailed description of the concept and the example of an application. The subfolder testloc constitutes a GRASS location with test data.

: '''Author:''' Martin Mergili

==== r.in.onearth ====

: [http://www-pool.math.tu-berlin.de/~soeren/grass/modules/ r.in.onearth] for download and import satellite images direct from the NASA onearth WMS server into GRASS.

: '''Author:''' Soeren Gebbert

==== r.in.wms (.py) ====

: [http://les-ejk.cz/files/programs/grass/r.in.wms.tgz r.in.wms] for download and import maps direct from WMS servers into GRASS. This script is written in Python Programming language. Note GRASS 6.2+ provides a shell script version of r.in.wms, take care of which one is actually being run.

: '''Author:''' Jachym Cepicky

==== r.inund.fluv ====

: [https://svn.osgeo.org/grass/grass-addons/raster/r.inund.fluv/ r.inund.fluv]This command allows to obtain a fluvial potentially inundation map given a high-resolution DTM of the area surrounding the river and a water surface profile calculated through an 1-D hydrodinamic model.

: '''Authors:''' Roberto Marzocchi, Bianca Federici, Domenico Sguerso

==== r.isoregions ====

: [http://trac.osgeo.org/grass/browser/grass-addons/raster/r.isoregions/r.isoregions r.isoregions] allows isoregions creation from a GRASS raster map.

: '''Authors:''' Mathieu Grelier

==== r.interp.mask ====

: [http://david.p.finlayson.googlepages.com/r.interp.mask r.interp.mask] Creates a user-specified buffer around interpolation points that can be used as a MASK to prevent or clip excessive extrapolation artifacts. This works much better than a standard convex hull around the points.

: '''Author:''' David Finlayson

==== r.li ====

: [http://www.faunalia.it/download/r_li/ r.li] is a more flexible and faster replacement of the old r.le. '''''Moved into 6.3-SVN'''''.

: '''Authors:''' Claudio Porta, Davide Spano, Serena Pallecchi, [http://www.faunalia.it Faunalia]

==== r.local_max.pl ====

: [http://les-ejk.cz/files/programs/local_max.pl Local maxima] is a Perl script for <code>r.mapcalc</code>. It detects local maxima of the image.

: '''Author:''' Jachym Cepicky

==== r.mandelbrot ====

: [http://grasslab.gisix.com/scripts/r.mandelbrot r.mandelbrot] is a shell script to calculate the Mandelbrot set.- for GRASS versions 6.X.

: '''Author:''' Peter Löwe

==== mcda====

: mcda suite is a toolset for geographics multi-criteria decision aiding and data analysis based on ELECTRE (r.mcda.electre), REGIME (r.mcda.regime) and FUZZY (r.mcda.fuzzy) algorithm. The module r.roughset is also included for geographics rough set analisys and knowledge discovery based on rough set library. It is written in C language for GRASS versions 6.X.

: '''Author:''' Gianluca Massei (g_massa@libero.it ) - Antonio Boggia

Available via SVN:

svn co https://svn.osgeo.org/grass/grass-addons/raster/mcda/

==== r.mlv ====

: [http://les-ejk.cz/files/programs/grass/r.mlv.tgz r.mlv] is Mean of least variance filter for GRASS. It is an edge-preserving (or even edge-enhacing) filter, which should serve for removing additive noise from images. It is written in C language.

: '''Author:''' Jachym Cepicky

==== r.out.jpeg ====

: [http://www.geospatial.it/allegri/grass/r.out.jpeg_ r.out.jpeg] is a simple GRASS script to export georeferenced JPEG images from rasters, keeping the associated color table. It is a two-step export: first a ppm file is created, then it is converted to jpeg usgin the "convert" command from ImageMagick

: '''Author:''' Giovanni Allegri

==== r.out.gmap ====

: [http://trac.osgeo.org/grass/browser/grass-addons/raster/r.out.gmap r.out.gmap] outputs GRASS raster map into set of image tiles
following the tiling scheme of Google Maps and Microsoft Virtual Earth.
 Read more in the OSGeo Journal [http://www.osgeo.org/journal Volume 5 (2009, to appear)]

: '''Author:''' Tomas Cebecauer

==== r.out.gmt ====

: [http://trac.osgeo.org/grass/browser/grass-addons/raster/r.out.gmt r.out.gmt] is a GRASS script for exporting a GRASS raster map into a [http://www.soest.hawaii.edu/gmt/ GMT] grid file. It also creates a GMT color table from the data and can generate some GMT commands for plotting a postscript file. (code is experimental, but functional) see also http://169.237.35.250/~dylan/grass_user_group/#GMT_and_GRASS-overview

: '''Authors:''' Hamish Bowman, Dylan Beaudette

==== r.out.gmt2 ====

: [http://trac.osgeo.org/grass/browser/grass-addons/raster/r.out.gmt2 r.out.gmt2] is a modified version of Hamish's r.out.gmt. Added options for title, xlabel, ylabel, comment, and map width. Removed any settings that can be changed by gmtset for more flexibility.

: '''Author:''' Huidae Cho, Hamish Bowman, Dylan Beaudette

==== r.pack ====

: [http://trac.osgeo.org/grass/browser/grass-addons/raster/r.pack r.pack and r.unpack] are two GRASS scripts for transfering raster maps to another computer as a single file.

: '''Author:''' Hamish Bowman

==== r.roughness ====

: [http://trac.osgeo.org/grass/browser/grass-addons/raster/r.roughness/r.roughness.sh r.roughness.sh] is a shell script to calculate the surface roughness of a DEM, using r.surf.area and v.surf.rst. (for GRASS versions 6.1 and above)

[http://www.igc.usp.br/pessoais/guano/downloads/r.roughness60 r.roughness60] - for GRASS versions 6.0.X

[http://trac.osgeo.org/grass/browser/grass-addons/raster/r.roughness/r.roughness.window.area r.roughness.window.area] - calculate surface roughness as the ratio of real (surface) area and planar area, using a moving-window approach.

[http://trac.osgeo.org/grass/browser/grass-addons/raster/r.roughness/r.roughness.window.vector r.roughness.window.vector] - calculate surface roughness as vector dispersion, using a moving-window approach. Resulting maps are: Vector Strength (R) and Inverted Fisher's k parameter.

[http://trac.osgeo.org/grass/browser/grass-addons/raster/r.roughness/r.roughness.window.vector.html r.roughness.window.vector.html] - provisional help page for r.roughness.window.vector.

: '''Author:''' Carlos Henrique Grohmann

Available via SVN:

svn co https://svn.osgeo.org/grass/grass-addons/raster/r.roughness/

==== r.roughset ====

: r.roughset is a module for geographics rough set analisys and knowledge discovery based on rough set library. It is written in C language for GRASS versions 6.X.

: '''Author:''' Gianluca Massei (g_massa@libero.it ) - Antonio Boggia

Available via SVN:

svn co https://svn.osgeo.org/grass/grass-addons/raster/mcda/r.roughset/

==== r.smoothpatch ====

: [http://david.p.finlayson.googlepages.com/r.smoothpatch r.smoothpatch] creates a composite of two rasters using a distance-weighted average across the transition to smooth the edges.

: '''Author:''' David Finlayson

==== r.soils.texture ====

: r.soils.texture is a module to define soils texture from sand and clay raster file with a schema text file (now FAO,USDA and ISSS are available). It is written in C language. - for GRASS versions 6.x - For bugs and suggest: g_massa@libero.it

:'''Author:''' Gianluca Massei

Available via SVN:

svn co https://svn.osgeo.org/grass/grass-addons/raster/r.soils.texture/

==== r.surf.nnbathy ====

: [http://www.sieczka.org/programy_en.html r.surf.nnbathy] interpolates a surface from a raster input using Pavel Sakov's [http://www.sieczka.org/prog/grass/nn-v.1.80.tar.gz nn] natural neighbor interpolation library. Provides triangulation, Sibson natural neighbor interpolation and non-Sibsonian interpolation.
: See the [http://code.google.com/p/nn-c/ NN project page] at Google Code.


: '''Author:''' Maciej Sieczka

==== r.surf.volcano ====

: [http://trac.osgeo.org/grass/browser/grass-addons/raster/r.surf.volcano r.surf.volcano] creates an artificial surface resembling a seamount or cone volcano. The user can alter the size and shape of the mountain and optionally roughen its surface. Available decay functions are polynomial, Gaussian, Lorentzian, logarithmic, and exponential.

: '''Author:''' Hamish Bowman

==== r.terracost ====

[http://www.bowdoin.edu/~ltoma/research.html r.terracost] Scalable approach for computing least-cost-path surfaces on massive grid terrains. '''Lead author''': Laura Toma

Available via SVN:
svn co https://svn.osgeo.org/grass/grass-addons/raster/r.terracost

==== r.tileset ====

: ''{{cmd|r.tileset}} moved into main archive''

==== r.traveltime ====

: [http://jesbergwetter.twoday.net/stories/4845555/ r.traveltime] computes the travel time of surface runoff to an outlet. The program starts at the basin outlet and calculates the travel time at each raster cell recursively. A drainage area related threhold considers even surface and also channel runoff. Travel times are derived by assuming kinematic wave approximation. The results can be used to derive a time-area function. This might be usefull for precipitation-runoff calculations (estimation of flood predictions) with a lumped hydrologic model (user-specified unit hydrograph).

: '''Author:''' Kristian Förster

==== r.univar.zonal ====

: [http://trac.osgeo.org/grass/browser/grass-addons/raster/r.univar2.zonal r.univar.zonal] is similar to r.univar, but calculates statistics separately for each category(zone) present in the separate input map used to define zones (zonal statistics). The output can be like the one of r.univar or in easier to read table format and can be written to a file.

: '''Author:''' Markus Metz

Available via SVN:

svn co https://svn.osgeo.org/grass/grass-addons/raster/r.univar2.zonal

==== r.viewshed ====

: r.viewshed is a module for extremely fast line of sight analysis (replaces the slow r.los). It is written in C language for GRASS versions 6.X/7.x.

: '''Author:''' Laura Toma, USA

Available via SVN:

svn co https://svn.osgeo.org/grass/grass-addons/raster/r.viewshed

Once {{trac|390}} is solved, it will substitute r.los.

==== r.zc.pl ====

: [http://les-ejk.cz/files/programs/zc.pl Zero crossing] is a simple Perl script, finds the ,,zero crossings`` from the Laplacian of Gaussian filter (see above). It is really very simple, the edges don't need to be really on that pixel, where they are detected, no interpolation is performed.

: '''Author:''' Jachym Cepicky

==== GIPE ====

: The GRASS Image Processing Environment (GIPE) has USLE, Energy-balance and radiance-reflectance correction models.

: '''Author:''' Yann Chemin (unless specified otherwise).

svn co https://svn.osgeo.org/grass/grass-addons/gipe

Remark: This is progressively moved to main GRASS SVN (aka GRASS 7)

:* r.hydro.CASC2D, ported from GRASS 5.x version, is temporarily here waiting to return to main GRASS.

:* r.soiltex2prop creates porosity, Saturated Hydraulic conductivity (Ksat) and wetting front pressure head (Hf) from percentage of sand and clay after Rawls et al., 1990. This is a must for r.hydro.CASC2D.

:* i.biomass creates biomass growth map from fPAR, lightuse efficiency, water availability (or evap.fraction), Lat, doy and tsw.

:* i.dn2ref.l7, r.dn2ref.ast create top of atmosphere reflectance for Landsat 7ETM+ and ASTER. These modules also have a flag for radiance output. Updated i.dn2ref.l7 to read .met calibration file.

:* i.dn2full.l[5,7] is an attempt to get all bands of Landsat[5,7] calibrated and corrected to either reflectance or temperature, reads only the .met file.

:* i.dn2potrad.l[5,7] is an attempt to get ET potential from DN of Landsat 7 (Careful! No Atmospheric correction!).

:* i.eb.* are a set of 10+ GRASS modules that together perform the main functions of the SEBAL model (Bastiaanssen, 1995). Those functions include (but are not limited to) Soil heat flux, sensible heat flux, net radiation, evaporative fraction at satellite overpass, diurnal actual evapotranspiration, momentum roughness length, etc. These modules are also part of any Energy-Balance related processing.

:* i.evapo.potrad creates diurnal Potential evapotranspiration assuming all net radiation becomes ET, according to SEBAL model (Bastiaanssen, 1995). This module also has a flag for diurnal net radiation as required by SEBAL in i.eb.eta.

:* i.evapo.SENAY creates actual evapotranspiration following the regional method of Senay (2007).

:* i.lmf creates a Local Maximum Fitting on the temporal dimension of the multi-date input dataset, working, but more precision still to be added.

:* i.vi.mpi is the mpi version of i.vi for cluster GRASS GIS education (no speed up here!) '''Author:''' Shamim Akhter

:* i.modis.stateqa extracts State Quality Assessment information from Modis 500m (MOD09A) products.

:* i.water creates a Water Mask from NDVI and Albedo, or specifically for Modis: NDVI and Band 7.

:* i.wi creates a given Water Index (only one so far).

==== HydroFOSS ====

: HydroFOSS - a GIS embedded approach for Free & Open Source Hydrological modeling.

: '''Author:''' Massimiliano Cannata

svn co https://svn.osgeo.org/grass/grass-addons/HydroFOSS/

==== Hikereport ====

: python script that computes length, cumulative uphill and downhill, average slopes on an interactively drawn path. Based on r.profile's output.

: '''Author:''' Stefano Negri

http://tracce.wordpress.com/?attachment_id=71

=== Misc add-ons===

==== m.eigensystem ====

m.eigensystem - Computes eigen values and eigen vectors for square matrices.

: http://svn.osgeo.org/grass/grass-addons/misc/m.eigensystem/

: '''Author:''' Michael Shapiro

===General add-ons===

==== g.laptop.sh ====

: [http://www.nature-consult.de/dassau/g.laptop/g.laptop.sh g.laptop.sh] is an interactive shell script to extract raster and vector data from current Location into a new one. Data can be copied or extracted in current or original resolution and region extend. This script was written to extract smaller parts of a GRASS location to be able to present them on a laptop without the necessity to transfer huge data. Maps do not have to be in the same mapset.

: '''Author:''' Otto Dassau

==== Readline completion ====

: '''''Readline completion''''' for GRASS commands under the bash shell: [http://www.sorokine.info/grass-complete/ grass-complete] won't clutter the environment but needs to be installed; [http://dcalvelo.free.fr/grass/grass_rlcompleter.sh grass_rlcompleter.sh] needs almost no installation but will pollute the environment. Grass-Complete currently requires Bash version 2.05 for proper install.

: '''Author:''' Alexandre Sorokine (grass-complete), Daniel Calvelo (grass_rlcompleter.sh)

==== g.region.point ====

: [http://trac.osgeo.org/grass/browser/grass-addons/general/g.region.point g.region.point] is a shell script which resets the computational region to a square box around a given coordinate. It is intended for use within GRASS scripts to speed up processing by limiting expensive raster calculations to a small area of interest.

: '''Author:''' Hamish Bowman

==== g.xlist ====

: [http://trac.osgeo.org/grass/browser/grass-addons/general/g.xlist g.xlist] is a C implementation of g.mlist. g.xlist searches for data files matching a pattern given by wildcards or POSIX Extended Regular Expressions. POSIX regex(3) functions are required.

: '''Author:''' Huidae Cho

==== g.xremove ====

: [http://trac.osgeo.org/grass/browser/grass-addons/general/g.xremove g.xremove] is a C implementation of g.mremove. g.xremove removes data files matching a pattern given by wildcards or POSIX Extended Regular Expressions. POSIX regex(3) functions are required.

: '''Author:''' Huidae Cho

=== Imagery add-ons ===

See also

svn co https://svn.osgeo.org/grass/grass-addons/imagery

==== GIPE ====

GIPE (see also above in raster section) provides:
i.biomass, i.dn2potrad.l5, i.dn2potrad.l7, i.dn2ref.ast, i.eb.deltat, i.eb.disp, i.eb.eta, i.eb.evapfr, i.eb.g0, i.eb.h0, i.eb.h_SEBAL01, i.eb.h_SEBAL95, i.eb.h_iter, i.eb.molength, i.eb.netrad, i.eb.psi, i.eb.rah, i.eb.rohair, i.eb.ublend, i.eb.ustar, i.eb.wetdrypix, i.eb.z0m, i.eb.z0m0, i.evapo.PT, i.evapo.TSA, i.evapo.potrad, i.evapo.senay, i.evapo.time_integration, i.lmf, i.modis.stateqa, i.sattime, i.vi.grid, i.vi.mpi, i.water, i.wi

svn co https://svn.osgeo.org/grass/grass-addons/gipe/

: '''Author:''' Yann Chemin

==== i.landsat.toar ====

Transform calibrated digital number of Landsat products to top-of-atmosphere radiance or top-of-atmosphere reflectance and temperature (band 6 of the sensors TM and ETM+). Optionally, used to calculate the at-surface radiance or reflectance with atmospheric correction (DOS method).

svn co https://svn.osgeo.org/grass/grass-addons/imagery/i.landsat.toar

: '''Author:''' E. Jorge Tizado

==== i.points.reproj ====

: [http://trac.osgeo.org/grass/browser/grass-addons/imagery/i.points.reproj i.points.reproj] is a shell script that will use cs2cs to reproject the target coordinates of a group's POINTS file. By running i.rectify directly to the new target projection, a generation of resampling data loss can be avoided (versus i.rectify + r.proj). On the other hand, i.rectify does not calculate cell resolution well if the map is to be rotated ([http://intevation.de/rt/webrt?serial_num=3296 bug #3296]), in those cases i.rectify+r.proj may be the better option.

: '''Author:''' Hamish Bowman

==== i.pr ====

: Image classification: implements k-NN (multiclass), classification trees (multiclass), maximum likelihood (multiclass), Support Vector Machines (binary), bagging versions of all the base classifiers, AdaBoost for binary trees and support vector machines. It allows feature manipulation (normalization, principal components,...). It also implements feature selection techniques (RFE, E-RFE,...), statistical tests on variables, tools for resampling (cross-validation and bootstrap) and cost-sensitive techniques for trees and support vector machines.

: '''Author:''' Stefano Merler. Available via SVN:

svn co https://svn.osgeo.org/grass/grass-addons/imagery/i.pr

==== i.spec.sam ====

: Spectral Angle mapping

: '''Author:''' Markus Neteler. Available via SVN:

svn co https://svn.osgeo.org/grass/grass-addons/imagery/i.spec.sam/

==== i.spec.unmix ====

: Spectral unmixing

: '''Author:''' Markus Neteler. Available via SVN:

svn co https://svn.osgeo.org/grass/grass-addons/imagery/i.spec.unmix/

==== i.warp ====

: [http://trac.osgeo.org/grass/browser/grass-addons/imagery/i.warp i.warp] is a shell script that will use gdalwarp to rectify a raw input image using thin plate splines. The map should be imported into GRASS with r.in.gdal and GCPs set with i.points. Input is the raw image (GeoTIFF, JPEG, etc). Output is a GeoTIFF in the imagery group's target location's map projection. Requires a recent (early 2006) version of GRASS 6.1, or newer.

: '''Author:''' Hamish Bowman

=== Display add-ons ===

See also

svn co https://svn.osgeo.org/grass/grass-addons/display

==== d.edit.rast ====

: [http://trac.osgeo.org/grass/browser/grass-addons/display/d.edit.rast d.edit.rast] edits cells in an existing raster map displayed on the current monitor.

: '''Author:''' Huidae Cho

==== d.frame.quarter ====

: ('''obsolete''') [http://trac.osgeo.org/grass/browser/grass-addons/display/d.frame.split d.frame.quarter] is a shell script that will split the display into four quadrants (or sixths) using ''d.frame''. Individual frames are named ''uno, dos, tres, cuatro'', and ''full_screen''.
: Replaced by {{cmd|d.split.frame}} in main.

: '''Author:''' Hamish Bowman

==== d.frame.split ====

: ''d.frame.split moved into main archive as {{cmd|d.split.frame}}''

==== d.hyperlink ====

: [ftp://gsca.nrcan.gc.ca/outgoing/Patton/Grass/Scripts/d.hyperlink.tar.bz2 d.hyperlink] is an interactive shell script that allows the viewing of hyperlinked images from a vector's attribute table in an external image viewer. Queries can be made via SQL statements or interactive mouse-clicking. The attribute table must be pre-populated with a column containing the image to link the vector to; the user also specifies the image folder in the current MAPSET where the images are located. The script currently supports gimp, Eye of Gnome, gthumb, gpdf, and Inkscape image viewers.

: '''Author: '''Eric Patton

==== d.mark ====

: [http://trac.osgeo.org/grass/browser/grass-addons/display/d.shortcuts d.mark] is a shell script that quickly displays a marker on the display at a given coordinate.

: '''Author:''' Hamish Bowman

==== d.region.box ====

: [http://trac.osgeo.org/grass/browser/grass-addons/display/d.region.box d.region.box] is a shell script that quickly displays a box around the current region.

: '''Author:''' Hamish Bowman

==== d.stations ====

: [http://trac.osgeo.org/grass/browser/grass-addons/display/d.shortcuts d.stations] is a shell script that quickly displays vector points (or sites for GRASS 5.4 and below).

: '''Author:''' Hamish Bowman

==== d.varea ====

: [http://trac.osgeo.org/grass/browser/grass-addons/display/d.shortcuts d.varea] is a shell script that quickly displays vector areas.

: '''Author:''' Hamish Bowman

==== pd-GRASS ====

: [http://www.ornl.gov/sci/gist/software/grass/ pd-GRASS]: Parallel Display for GRASS GIS

: '''Author:''' Alex Sorokine

==== [[IconSymbols]] ====

* [[IconSymbols|Symbols]] which can be used with ''d.vect, d.graph'', and ''ps.map''.

=== Postscript add-ons ===

''See also [[ps.map scripts|ps.map samples and templates]]''.

==== ps.atlas ====

: [http://les-ejk.cz/programs/grass/ps.atlas ps.atlas] is a shell script that makes more maps on current region according to input *.psmap file. General map can be stored as vector file. The resulting *.eps maps can be automatically converted to *.pdf files.

: '''Author:''' Jachym Cepicky

==== [[AreaFillPatterns]] ====

* Hatches for ps.map's vareas

===GRASS and UMN Mapserver===

* [http://www.mail-archive.com/mapserver-users@lists.umn.edu/msg00086.html See interesting posting]

[[Category:Community]]
[[Category:Development]]
[[Category:Documentation]]
[[Category:Installation]]

AddOns

2007-08-20T21:31:02Z

⚠️Guano: /* Raster add-ons */

This page contains references to user contributions and add-ons (the original GRASS GIS software can be downloaded [http://grass.itc.it/download/index.php here]).

__TOC__

== AddOns source code repository ==

The source code for a number of AddOns is hosted in a [https://grasssvn.itc.it/grasssvn/grassaddons/trunk/grassaddons/ SVN repository at ITC-irst].

To checkout:

svn co https://grasssvn.itc.it/svn/grassaddons/trunk/grassaddons

==Copyright and licensing information==

''Please be sure to include copyright and licensing information in the header comments of your code so that others may know how they can use, extend, modify, and redistribute your work.''

e.g. at the top of a shell script:
<pre>
#!/bin/sh
############################################################################
#
# MODULE: v.in.e00
#
# AUTHOR(S): Markus Neteler, Otto Dassau
#
# PURPOSE: Import E00 data into a GRASS vector map
# Imports single and split E00 files (.e00, .e01, .e02 ...)
#
# COPYRIGHT: (c) 2004, 2005 GDF Hannover bR, http://www.gdf-hannover.de
#
# This program is free software under the GNU General Public
# License (>=v2). Read the file COPYING that comes with GRASS
# for details.
#
#############################################################################
#
# REQUIREMENTS:
# - avcimport: http://avce00.maptools.org

[script follows]
</pre>

==Shell script coding standards==

Please have a look at our [http://grass.itc.it/grass63/source/SUBMITTING_SCRIPTS Shell script coding standards] before submitting here.

==Miscellaneous Add-ons==

* [http://bambi.otago.ac.nz/hamish/grass/utm_which_zone.sh utm_which_zone.sh] is a shell script to determine UTM zone from Lat/Lon input. Requires [http://www.octave.org Octave] to be installed. A shell-only version is [http://dcalvelo.free.fr/grass/utm_which_zone_sh.sh available] which only requires awk. '''Authors''': Hamish Bowman (Octave part), Markus Neteler (shell script wrapper), Daniel Calvelo (sh+awk version)

* Perl scripts for converting data forth and back between Excel files and PostgreSQL: [http://dcalvelo.free.fr/grass/pg2xls.pl pg2xls.pl] reads data from PostgreSQL and produces an excel workbook; [http://dcalvelo.free.fr/grass/xls2sql.pl xls2sql.pl] reads excel files and outputs SQL statements to be fed into an RDBMS. Both scripts need modules from [http://www.cpan.org CPAN], especially [http://search.cpan.org/dist/Spreadsheet-ParseExcel/ Spreadsheet::ParseExcel] for xls2sql.pl and [http://search.cpan.org/~tmtm/Spreadsheet-WriteExcel-FromDB Spreadsheet::WriteExcel::FromDB] and its dependencies for pg2sql.pl. Check the source headers for more info. '''Authors:''' Daniel Calvelo (xls2sql.pl), Markus Neteler (pg2xls.pl)

* [http://dream.lrrl.arch.tu-muenchen.de/~wqual/perl/dbf2sql.tgz dbf2sql] is a Perl script for translating dbf-tables into a sql-command. dbf-tables are read using dbfdump-command from dbd-xbase-perl module ([http://search.cpan.org/~janpaz/DBD-XBase-0.241/ dbd::xbase] and [http://search.cpan.org/~jv/Getopt-Long-2.35/lib/Getopt/Long.pm getopt::long] have to be installed from CPAN first). There are problems, if the last column of the table contains characters. Suggestions for improvements welcome! '''Author:'''Wolfgang Qual

* [http://www.igc.usp.br/pessoais/guano/downloads/azimuth2.c azimuth2.c] is a small C program to calculate the azimuth and length of vector lines exported by GRASS-GIS as ASCII files (like this: v.out.ascii input=vector output=ascii format=standard). It is useful for create rose diagrams of lineament maps. Improvements on the original code after suggestions by Örs Téglásy, Hungary. '''Author:''' Carlos Henrique Grohmann

==GRASS 5.x==

===Vector add-ons for GRASS 5===

* See here: http://grass.itc.it/download/addons.php

===Raster add-ons for GRASS 5===

* See here: http://grass.itc.it/download/addons.php

* [http://www.valledemexico.ambitiouslemon.com/gwmodelling.html r.gmtg] The groundwater modelling tool for grass. A module to use MODFLOW within GRASS. '''Author''': Jaime Carrera

* [http://www.bowdoin.edu/~ltoma/research.html r.terracost] Scalable approach for computing least-cost-path surfaces on massive grid terrains. For GRASS 5.3. '''Lead author''': Laura Toma

==GRASS 6.x==

===Vector add-ons===

* [http://grasslab/gisix.com/scripts/v.out.kml/ v.out.kml] is a shell script that exports a vector file into a KML file for Google Earth or Worldwind. '''Author:''' Peter Löwe

* [http://grasslab/gisix.com/scripts/v.in.ovl/ v.in.ovl] is a shell script that imports an ASCII vector file created with TOP10|25|50 or similar products. '''Author:''' Peter Löwe

* [http://geni.ath.cx/grass/v.out.gmt v.out.gmt] is a shell script that exports a polygon vector file into GMT xy file. psbasemap code was copied from Hamish's r.out.gmt. '''Author:''' Huidae Cho, Hamish Bowman, Dylan Beaudette

* [http://www.pois.org/florian/downloads/grass/v.strahler.tgz v.strahler] is a module that calculates the Strahler Order for all lines of a given dendritic network. '''Author:''' Florian Kindl. Available via SVN:

svn co https://grasssvn.itc.it/svn/grassaddons/trunk/grassaddons/v.strahler

* [http://svg.cc/grass/index.html v.out.svg] is a module that exports SVG notation along with optional attribute data directly from GRASS 6.x vector layers. Now part of grass63-cvs. '''Author:''' Klaus Förster

* [http://les-ejk.cz/programs/ v.trees3d] is a module for making 3D trees from input vector point file. '''Author:''' Jachym Cepicky

* [http://www.public.asu.edu/~cmbarton/files/grass_scripts/v.lda v.lda] is a shell script for calculating Ian Johnson's (U. Sidney) Local Density Analysis values to measure clustering of point data at different neighborhood radii. There is an option to create a simple line graph of the results. There have been reports of problems creating the line graph on Cygwin installations of GRASS. '''Author:''' Michael Barton

* [http://www.public.asu.edu/~cmbarton/files/grass_scripts/v.append v.append] is a shell script combining two vector files AND their associated attribute tables. The vector files should be of the same type and, for best results, should have identically formatted attribute tables. '''Author:''' Michael Barton

* [http://www.shockfamily.net/cedric/grass/v.group v.group] generates a new vector map with the same geometry as an existing map. The new map has categories and a table based on grouping by the values in certain columns of the existing map's table. The values in these columns are preserved in the table for the new map. It's like a v.reclass that preserves data. '''Author:''' Cedric Shock

* [http://bambi.otago.ac.nz/hamish/grass/v.out.ascii.db v.out.ascii.db] is a shell script for exporting vector point data coordinates and selected attribute columns to either a file or to the console. '''Author:''' Hamish Bowman

* [http://les-ejk.cz/programs v.rasterbounds] is a shell script for creating polygon-vector file of rasterfile boundaries. The best version of GRASS is 6.1+. If you are using GRASS < 6.1, you have to be in the same mapset as your raster maps are from. '''Author:''' Jachym Cepicky

* [http://www.clubwebcanada.ca/twiens/v.sample.buffer.tgz v.sample.buffer] is a shell script that samples rasters in buffers of a specified size around features in a specified vector file. Sampling results are added as attributes to the vector file. This script was designed for sampling vegetation indices and DEM derived attributes for bird point counts. Sampling results can be one or more basic statistics such as mean, range, max, etc. '''Author:''' Trevor Wiens

* [http://www.gfosservices.it/materiale_didattico/moduli/grass_kriging.tar.gz v.variogram] is a script that create an omnidirectional experimental semi-variogram. This scripts require R-statistics software installed on your machine. Now the script is updated to run on spgrass6 >= 0.3 and sp >= 0.9 [http://grass.itc.it/pipermail/statsgrass/2006-October/000455.html reply]. '''Author:''' Ivan Marchesini, Pierluigi De Rosa.

* [http://www.gfosservices.it/materiale_didattico/moduli/grass_kriging.tar.gz v.surf.krige] is a script that do a surface interpolation from vector point data by Kriging method. The interpolated value of a cell is determined by using an omnidirectional variogram model fitted starting from model parameter given by user shown from the experimental semi variogram produced by v.variogram. The script can perform also the Leave-One-out cross validation to test the variogram model "fitted by eye" and an automatic fitted variogram model. The cross validation helps the user to choose the best variogram model to interpolate own data. '''Author:''' Pierluigi De Rosa.

* [http://ngeo.de/grassstuff/v.lmeasure v.lmeasure] and [http://ngeo.de/grassstuff/v.revlmeasure v.revlmeasure] are two perl scripts that place equidistant vector points along a given arbitrary vector line starting from the beginning or end of the vector line, respectively. Resulting vector points are labeled with the distance from origin. '''Author:''' Mats Schuh

* [http://david.p.finlayson.googlepages.com/v.swathwidth v.swathwidth] creates a vector map representing the sea bottom coverage of a multibeam (swath) sonar survey. '''Author:''' David Finlayson

* [http://kufaya.googlepages.com/v.flip.zip v.flip] flips the direction of selected vector lines (redundant since GRASS 6.3 - there is "v.edit tool=flip"). '''Author:''' Maciej Sieczka

* [http://phygeo7.geo.uni-augsburg.de/gis2/scripts/v.digatt v.digatt] (shell script) Interactively assign numeric table attributes to series of vector objects. It is meant to be effective by avoiding to type in the attribute value for all single objects again and again. The user is prompted for typing in an attribute value which is assigned to all objects selected by mouseclick afterwards. Next the display is redrawn after updating the table column. Zooming allows to change the region before the old value can be reused or a new one can be typed in (or copied by mouse from another object) in order to assign it to the next series of objects etc. It is tested not very extensively yet. Therefore better work with a copy of your map and consider using v.digit or d.what.vect -e alternatively. [http://phygeo7.geo.uni-augsburg.de/gis2/scripts/v.digatt.png screenshot]. '''Author:''' Andreas Philipp

* [http://k153-85.fsv.cvut.cz/cgi-bin/viewcvs.cgi/grass6/vector/v.in.gama/ v.in.gama] converts [http://www.gnu.org/software/gama/ GNU GaMa] XML output file to a GRASS vector map layer. '''Author:''' Martin Landa

* [http://kufaya.googlepages.com/v.breach.zip v.breach] creates vector maps of lines and points of continously lowering elevation down the input watercourses, based on the input raster DEM. '''Author:''' Maciej Sieczka

* [http://kufaya.googlepages.com/v.line.center.zip v.line.center] creates a points vector map with each point located in the middle of the length of the input vector line. '''Author:''' Maciej Sieczka

* [http://wiki.iosa.it/dokuwiki/spatial_analysis:feature_count v.count.points.sh] counts point features in areas, generates table good as input to d.vect.chart. '''Author:''' Stefano Costa

* [http://mpa.itc.it/markus/grass63/v.in.wfs v.in.wfs]: WFS import into GRASS '''Author:''' Markus Neteler

* [http://kripton.kripserver.net/software/v.in.osm/ v.in.osm]: OpenStreetMap import into GRASS '''Author:''' Jannis Achstetter

===Raster add-ons===

* [http://grasslab.gisix.com/scripts/r.mandelbrot r.mandelbrot] is a shell script to calculate the Mandelbrot set.- for GRASS versions 6.X '''Author:''' Peter Löwe

* [http://www.igc.usp.br/pessoais/guano/downloads/r.roughness r.roughness] is a shell script to calculate the surface roughness of a DEM, using r.surf.area and v.surf.rst. (for GRASS versions 6.1 and above)
* [http://www.igc.usp.br/pessoais/guano/downloads/r.roughness60 r.roughness60] - for GRASS versions 6.0.X

* [http://www.igc.usp.br/pessoais/guano/downloads/r.roughness.window.area r.roughness.window.area] - calculate surface roughness as the ratio of real (surface) area and planar area, using a moving-window approach.
* [http://www.igc.usp.br/pessoais/guano/downloads/r.roughness.window.vector r.roughness.window.vector] - calculate surface roughness as vector dispersion, using a moving-window approach. Resulting maps are: Vector Strength (R) and Inverted Fisher's k parameter.
* [http://www.igc.usp.br/pessoais/guano/downloads/r.roughness.window.vector.html r.roughness.window.vector.html] - provisional help page for r.roughness.window.vector. '''Author:''' Carlos Henrique Grohmann

* [http://www.les-ejk.cz/files/programs/grass/r.gauss.tgz r.gauss] is Gaussian and Laplacian of Gaussian filter for GRASS. It is written in C language. '''Author:''' Jachym Cepicky

* [http://les-ejk.cz/files/programs/grass/r.mlv.tgz r.mlv] is Mean of least variance filter for GRASS. It is an edge-preserving (or even edge-enhacing) filter, which should serve for removing additive noise from images. It is written in C language. '''Author:''' Jachym Cepicky

* [http://les-ejk.cz/files/programs/grass/r.bilateral.tgz r.bilateral] Bilateral filter is an edge-preserving filter, which combines domain and range filtering. It is written in C language. '''Author:''' Jachym Cepicky

* [http://les-ejk.cz/files/programs/zc.pl Zero crossing] is a simple Perl script, finds the ,,zero crossings`` from the Laplacian of Gaussian filter (see above). It is really very simple, the edges don't need to be really on that pixel, where they are detected, no interpolation is performed. '''Author:''' Jachym Cepicky

'''Usage:'''
zc.pl -i input -o output |r.mapcalc

* [http://les-ejk.cz/files/programs/local_max.pl Local maxima] is a Perl script for <code>r.mapcalc</code>. It detects local maxima of the image. '''Author:''' Jachym Cepicky

'''Usage:'''
local_maxima.pl -i input -o output -s matrix_size|r.mapcalc

* [http://bambi.otago.ac.nz/hamish/grass/r.out.gmt r.out.gmt] is a GRASS script for exporting a GRASS raster map into a [[http://www.soest.hawaii.edu/gmt/ GMT]] grid file. It also creates a GMT color table from the data and can generate some GMT commands for plotting a postscript file. (code is experimental, but functional) see also http://169.237.35.250/~dylan/grass_user_group/#GMT_and_GRASS-overview '''Authors:''' Hamish Bowman, Dylan Beaudette

* [http://geni.ath.cx/grass/r.out.gmt yet another r.out.gmt] is a modified version of Hamish's r.out.gmt. Added options for title, xlabel, ylabel, comment, and map width. Removed any settings that can be changed by gmtset for more flexibility. '''Author:''' Hamish Bowman, Huidae Cho, Dylan Beaudette

* [http://bambi.otago.ac.nz/hamish/grass/r.pack r.pack] and [http://bambi.otago.ac.nz/hamish/grass/r.unpack r.unpack] are two GRASS scripts for transfering raster maps to another computer as a single file. '''Author:''' Hamish Bowman

* [http://bambi.otago.ac.nz/hamish/grass/dominant_dir.m dominant_dir.m] and [http://bambi.otago.ac.nz/hamish/grass/calc_terraflow_dir.m calc_terraflow_dir.m] are two Matlab scripts for determining the dominant flow direction from a r.terraflow MFD map and converting into a GRASS aspect map for use with d.rast.arrow, etc. '''Author:''' Hamish Bowman

* [http://www-pool.math.tu-berlin.de/~soeren/grass/modules/ r.in.onearth] for download and import satellite images direct from the NASA onearth WMS server into GRASS. '''Author:''' Soeren Gebbert

* [http://les-ejk.cz/files/programs/grass/r.in.wms.tgz r.in.wms] for download and import maps direct from WMS servers into GRASS. This script is written in Python Programming language. '''Author:''' Jachym Cepicky

* [http://www.shockfamily.net/cedric/grass/r.tileset r.tileset] generates a list of tiles and sizes in a source projection that cover the region in the current database with appropriate resolution. The size of individual tiles can be constrained. Only tiles intersecting the current region are returned. These tilings are appropriate for requesting data from another projection to meet the specifications of the current region. For example, it could be used to generate tile requests to a latitude / longitude WMS server like this <code>r.tileset -w sourceproj="+init=epsg:4326"</code>. '''Author:''' Cedric Shock

* [ftp://gsca.nrcan.gc.ca/outgoing/Patton/Grass/Scripts/r.csr.tar.bz2 r.csr] integrates several Grass programs to produce colored, shaded-relief rasters in one step. Accepts single or multiple elevation/bathymetry maps as input; optionally will fill data holidays with 3x3 median filter, multiple times, if required; can apply color maps from a) input raster, b) another raster in MAPSET, or c) from a rules file; otherwise, rainbow colorbar is applied. Output colored, shaded-relief rasters can optionally be exported to tiff format and archived using tar with gzip/bzip2 compression if appropriate flags are given. Shading parameters can be modified, though useful defaults are given. '''Author:''' Eric Patton

* [ftp://gsca.nrcan.gc.ca/outgoing/Patton/Grass/Scripts/r.fragment.tar.bz2 r.fragment] fragments a raster into a user-defined set of smaller tiles according to an input number of rows and columns. Optionally, a null value threshold can be set to filter out candidate tiles that would have a large percentage of null cells. '''Author:''' Eric Patton

* [http://david.p.finlayson.googlepages.com/r.eucdist r.eucdist] creates a raster map estimating the euclidean distance from known cells. '''Author:''' David Finlayson

* [http://david.p.finlayson.googlepages.com/r.smoothpatch r.smoothpatch] creates a composite of two rasters using a distance-weighted average across the transition to smooth the edges. '''Author:''' David Finlayson

* [http://www.faunalia.it/download/r_li/ r.li] is a more flexible and faster replacement of the old r.le. '''''Moved into 6.3-CVS'''''. '''Authors:''' Claudio Porta, Davide Spano, Serena Pallecchi, [http://www.faunalia.it Faunalia]

* [http://kufaya.googlepages.com/r.surf.nnbathy.zip r.surf.nnbathy] interpolates a surface from a raster input using the [http://www.marine.csiro.au/~sakov/ nn] natural neighbor interpolation library. Provides triangulation, Sibson natural neighbor interpolation and non-Sibsonian interpolation. '''Author:''' Maciej Sieczka

* The GRASS Image Processing Environment (GIPE) has USLE, Energy-balance and radiance-reflectance correction models. '''Author:''' Yann Chemin (unless specified otherwise). It is available by anonymous reading through this command (thanks Markus!): 
svn co https://grasssvn.itc.it/svn/grassaddons/trunk/grassaddons grassaddons/gipe
 
- r.usler creates USLE R factor (Rainfall erosivity) from annual precipitations.
It has 4 methods, Morgan, Roose, Foster and El-Swaify to choose from.
'''Authors:''' Natalia Medvedeva and Yann Chemin 
- r.uslek creates USLE K factor (soil erodibility) from sand, clay, silt fractions
and organic matter fraction. Based on USDA 1951 (p209) quoted in FAO World Soil CD,
and from some generic [soil class+OM] to K conversion table. 
- r.albedo creates Albedo. Albedo is the shortwave surface reflectance in the range
of 0.3-3 micro-meters. This module takes Modis, Aster, Landsat or AVHRR individual
surface reflectance bands to calculate Albedo. This module is a precursor to r.sun
or any Energy-Balance related processing. 
- r.eb.* are a set of 10+ GRASS modules that together perform the main functions of
the SEBAL model (Bastiaanssen, 1995). Those functions include (but are not limited to)
Soil heat flux, sensible heat flux, net radiation, evaporative fraction at satellite
overpass, diurnal actual evapotranspiration, momentum roughness length, etc. These
modules are also part of any Energy-Balance related processing. 
- r.evapo.potrad creates diurnal Potential evapotranspiration assuming all net radiation
becomes ET, according to SEBAL model (Bastiaanssen, 1995). This module also has a flag for
diurnal net radiation as required by SEBAL in r.eb.eta. 
- r.vi creates a given Vegetation index from a list of 13 of them, most of them only
requiring Red and NIR. Updated to accept all types of input data.
'''Authors:''' Baburao Kamble and Yann Chemin 
- r.vi.mpi is the mpi verion for cluster GRASS GIS education (no speed up here!).
'''Author:''' Shamim Akhter 
- r.dn2ref.l7, r.dn2ref.ast create top of atmosphere reflectance for Landsat 7ETM+ and
ASTER. These modules also have a flag for radiance output. Updated r.dn2ref.l7 to read .met
calibration file. 
- r.dn2full.l7 is an attempt to get all bands of Landsat7 calibrated and corrected to
either reflectance or temperature, reads only the .met file. 
- r.dn2potrad.l7] is an attempt to get ET potential from DN of Landsat 7 (Careful! No
Atmospheric correction!). 
- r.biomass creates biomass growth map from fPAR, lightuse efficiency, water availability
(or evap.fraction), Lat, doy and tsw.

* r.boxcount and r.boxcount.sh calculate the fractal dimension for a given map. These are versions for grass6 of [http://www.ucl.ac.uk/~tcrnmar/ Mark Lake's modules] for grass43. '''Authors:''' Mark Lake, grass6 port: Florian Kindl. Available via SVN: svn co https://grasssvn.itc.it/svn/grassaddons/trunk/grassaddons

===General add-ons===

* [http://www.nature-consult.de/dassau/g.laptop/g.laptop.sh g.laptop.sh] is an interactive shell script to extract raster and vector data from current Location into a new one. Data can be copied or extracted in current or original resolution and region extend. This script was written to extract smaller parts of a GRASS location to be able to present them on a laptop without the necessity to transfer huge data. Maps do not have to be in the same mapset. '''Author:''' Otto Dassau

* '''''Readline completion''''' for GRASS commands under the bash shell: [http://www.sorokine.info/grass-complete/ grass-complete] won't clutter the environment but needs to be installed; [http://dcalvelo.free.fr/grass/grass_rlcompleter.sh grass_rlcompleter.sh] needs almost no installation but will pollute the environment. Grass-Complete currently requires Bash version 2.05 for proper install. '''Author:''' Alexandre Sorokine (grass-complete), Daniel Calvelo (grass_rlcompleter.sh)
 

=== Imagery add-ons ===

* i.atcorr: Atmospheric Correction using Christo Zietsman's implementation of 6s code in C/C++. '''Author:''' Christo Zietsman. Available in SVN:

svn co https://grasssvn.itc.it/svn/grassaddons/trunk/grassaddons grassaddons/gipe

* [http://bambi.otago.ac.nz/hamish/grass/gdal/i.warp61 i.warp61] is a shell script that will use gdalwarp to rectify a raw input image using thin plate splines. The map should be imported into GRASS with r.in.gdal and GCPs set with i.points. Input is the raw image (GeoTIFF, JPEG, etc). Output is a GeoTIFF in the imagery group's target location's map projection. Requires a recent (early 2006) version of GRASS 6.1, or newer. '''Author:''' Hamish Bowman
 

* [http://bambi.otago.ac.nz/hamish/grass/i.points.reproj i.points.reproj] is a shell script that will use cs2cs to reproject the target coordinates of a group's POINTS file. By running i.rectify directly to the new target projection, a generation of resampling data loss can be avoided (versus i.rectify + r.proj). On the other hand, i.rectify does not calculate cell resolution well if the map is to be rotated ([http://intevation.de/rt/webrt?serial_num=3296 bug #3296]), in those cases i.rectify+r.proj may be the better option. '''Author:''' Hamish Bowman
 

* i.pr: Image classification: implements k-NN (multiclass), classification trees (multiclass), maximum likelihood (multiclass), Support Vector Machines (binary), bagging versions of all the base classifiers, AdaBoost for binary trees and support vector machines. It allows feature manipulation (normalization, principal components,...). It also implements feature selection techniques (RFE, E-RFE,...), statistical tests on variables, tools for resampling (cross-validation and bootstrap) and cost-sensitive techniques for trees and support vector machines. '''Author:''' Stefano Merler. Available via SVN:

svn co https://grasssvn.itc.it/svn/grassaddons/trunk/grassaddons/i.pr

=== Display add-ons ===

==== [[IconSymbols]] ====
* [[IconSymbols|Symbols]] which can be used with ''d.vect, d.graph'', and ''ps.map''.

==== Modules ====

* [http://bambi.otago.ac.nz/hamish/grass/d.frame.quarter d.frame.quarter] is a shell script that will split the display into four quadrants using ''d.frame''. Individual frames are named ''uno, dos, tres, cuatro'', and ''full_screen''. '''Author:''' Hamish Bowman

* [ftp://gsca.nrcan.gc.ca/outgoing/Patton/Grass/Scripts/d.hyperlink.tar.bz2 d.hyperlink] is an interactive shell script that allows the viewing of hyperlinked images from a vector's attribute table in an external image viewer. Queries can be made via SQL statements or interactive mouse-clicking. The attribute table must be pre-populated with a column containing the image to link the vector to; the user also specifies the image folder in the current MAPSET where the images are located. The script currently supports gimp, Eye of Gnome, gthumb, gpdf, and Inkscape image viewers. '''Author: '''Eric Patton

* [http://www.ornl.gov/sci/gist/software/grass/ pd-GRASS]: Parallel Display for GRASS GIS '''Author:''' Alex Sorokine

* [http://bambi.otago.ac.nz/hamish/grass/d.region.box d.region.box] is a shell script that quickly displays a box around the current region. '''Author:''' Hamish Bowman

* [http://bambi.otago.ac.nz/hamish/grass/d.stations d.stations] is a shell script that quickly displays vector points (or sites for GRASS 5.4 and below). '''Author:''' Hamish Bowman

* [http://bambi.otago.ac.nz/hamish/grass/d.mark d.mark] is a shell script that quickly displays a marker on the display at a given coordinate. '''Author:''' Hamish Bowman

* [http://bambi.otago.ac.nz/hamish/grass/d.varea d.varea] is a shell script that quickly displays vector areas. '''Author:''' Hamish Bowman

* [http://geni.ath.cx/grass/d.edit.rast d.edit.rast] edits cells in an existing raster map displayed on the current monitor. '''Author:''' Huidae Cho

===Postscript add-ons===

* [http://les-ejk.cz/programs/grass/ps.atlas ps.atlas] is a shell script that makes more maps on current region according to input *.psmap file. General map can be stored as vector file. The resulting *.eps maps can be automatically converted to *.pdf files. '''Author:''' Jachym Cepicky

* [[ps.map scripts|ps.map samples/templates]]

==== [[AreaFillPatterns]] ====
* Hatches for ps.map's vareas

===GRASS and UMN Mapserver===

* [http://www.mail-archive.com/mapserver-users@lists.umn.edu/msg00086.html See interesting posting]

[[Category:Community]]
[[Category:Development]]
[[Category:Documentation]]
[[Category:Installation]]

HOWTO create 3D TIN

2007-07-30T12:02:07Z

⚠️Guano:

This is a micro-howto about how to create 3D TINs from 3D vector points.
The resulting TIN is saved as a DXF file, that can be imported into GRASS or used with CAD programs.

- NOTE: this was only tested on Linux machines!

First you need to install Paraview (http://www.paraview.org) and MeshLab (http://meshlab.sourceforge.net/).

Then,

1 - Export your 3d points as a VTK file;

2 - In Paraview, open the vtk file, click on Apply, then go to Filters-Alphabetical-Delaunay 2D (need to click apply again). click on the name of the just-created mesh and go to file-save data. Save it as a PLY file.

3 - Open the PLY in MEshLab and save as a DXF. If you open the dxf in a text editor, you will see the lovely 3DFACE. :)

If imported it back into GRASS, it will be imported as FACES.

good luck!

[[Category:FAQ]]

HOWTO create 3D TIN

2007-07-30T12:01:13Z

⚠️Guano: How to create 3D TINs from 3D vector points

Grassbrochure

2007-02-24T22:09:56Z

⚠️Guano: /* LaTeX Source code */

=GRASS Brochure=
[http://www.perlomat.de/grassflyer.pdf draft-grassbrochure]

GRASS- Flyer (first draft).

=LaTeX Source code=
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%GRASS PROMOTION FLYER %

%(c) GRASS PROMOTION TEAM %

%GNU Free Documentation License %

%Version 1.2 %

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%All Screenshots are just for development.

%we must ask if it's okay to use them

%should we add captions for the images?

%or serve them as appetizers wthout informations?

\documentclass[tumble,a4paper]{leaflet}

\renewcommand\sfdefault{phv}
\renewcommand{\familydefault}{\sfdefault}

\title{\textbf{\begin{huge}GRASS GIS\end{huge}}\\ \textsl{Efficiency through Freedom \& Transparency}}

\author{The GRASS Community}

\date{}

\begin{document}

\maketitle

\begin{center}

\includegraphics[width=1.0\textwidth]{pix/grasslogo_vector.eps}

\end{center}

%I don't know why there's a pagenumber on the first page

%According to the class manual it should be supressed by default

\newpage

\section{What is GRASS}

GRASS (Geographic Ressources Analysis Support System) is a free and Open Source Software for performing spatial analyses. It consists of more than 350 modules for processing vector (2D/3D), raster and voxel data. Many interfaces to other programs in related domains like geostatistics, databases, mapserver and even other GIS software exists. It is the biggest Open Source GIS at all and can serve as a Desktop GIS and as a backbone in a complete GIS Infrastructure as well.

\section{Where is GRASS used}

GRASS is used in scientific aplications, commercercial settings and by public authorities all over the world. GRASS has shown his strong potential for solving geospatial problems in numberous cases all over the world.

\section{History}

Originally developed in the beginning of the 80's by the US Army Construction Engineering Research Laboratories (USA-CERL), it was published as public domain software. When the USA- CERL withdrew from the development of GRASS an international developer team overtook this work. Since 1999 GRASS is published as free software under the terms of the GNU General Public Licence.

\begin{center}

\includegraphics[width=0.9\textwidth]{pix/srtmv2.eps}

\end{center}

\section{Open Source Philosophy}

The Open Source philosophy provides the user the ability to see the source code and structure of the program which offers a great transparancy. The user can easily extend the program for his own needs. With the help of the extension manager own modules can be created without any source code.

\section{Technical Data Sheet}

\subsection{Licence}

\begin{itemize}

\item{GNU General Public Licence (Free Software Foundation)}

\end{itemize}

\subsection{Supported platforms}

GRASS runs on nearly all platforms. It supports GNU/Linux, Posix compliant Unix Systems, MS-Windows and MacOS X.

\subsection{Design}

\begin{itemize}

\item{Modular}

\item{Consist of more than 350 modules}

\end{itemize}

\subsection{Programming Language}

\begin{itemize}

\item{ANSI C}

\item{GRASS- SWIG}

\item{Python for WebGIS applications}

\end{itemize}

\subsection{Data Management Capabilities}

\begin{itemize}

\item{Raster / Vector data processing}

\item{2D / 3D Raster / Vector modelling}

\item{Image manipulation}

\item{Network analysis}

\item{Geostatistics (Interface to R)}

\end{itemize}

\begin{center}

\includegraphics[width=0.8\textwidth]{pix/trento3d.eps}

\end{center}

\section{Supported File Formats}

GRASS supports nearly all common GIS- file formats through the use of the GDAL/OGR library. In addition it supports the Open GIS Consortiums Simple Features.

\subsection{Vector File formats}

ASCII, ARC/INFO ungenerate, ARC/INFO E00, ArcView SHAPE (topology correction), BIL, DLG (U.S.), DXF,

DXF3D, GMT, GPS-ASCII USGS-DEM, IDRISI, MOSS, MapInfo MIF, TIGER, VRML, \ldots

\subsection{Raster File Formats}

ASCII, ARC/GRID, E00, GIF, GMT, TIF, PNG, ERDAS LAN, Vis5D, SURFER (.grd),\ldots

\begin{center}

\includegraphics[width=0.8\textwidth]{pix/isodist.eps}

\end{center}

\subsection{Image File Formats}

CEOS (SAR, SRTM, LANDSAT7 etc.), ERDAS LAN, HDF, LANDSAT TM/MSS, NHAP aerial photos, SAR, SPOT,

\ldots

\begin{center}

\includegraphics[width=0.8\textwidth]{pix/grass3d_groundwater_contamination2.eps}

\end{center}

\subsection{Databases}

\begin{itemize}

\item{PostgreSQL / PostGIS}

\item{MySQL}

\item{SQLite}

\item{ODBC}

\end{itemize}

\subsection{Output}

\begin{itemize}

\item{Modules for creating maps}

\item{NVIZ for visualization of 2.5D and 3D data (creation of animations \& flybys)}

%\item{GMT export}

%item{VRML}

\item{VTK, POVray}

\item{WebGIS via Mapserver, Python, etc.}

\end{itemize}

\subsection{Interoperability to other GIS- related Software}

\begin{itemize}

\item{Quantum GIS (Free Geodata Viewer and more)}

\item{R- Language (Statistics)}

\item{Gstat (Geostatistics)}

\item{UMS Mapserver (Webmapping)}

\end{itemize}

\section{OSGeo}

GRASS is a founding project of the Open Source Geospatial Foundation which has the aim to establish high quality open source geospatial software. For further informations take a look at the OSGeo homepage:

\textit{http://www.osgeo.org}

\begin{center}

\includegraphics[width=0.9\textwidth]{pix/OSGeo_CMYK.eps}

\end{center}

\section{Where to find more information}

\begin{itemize}

%\begin{flushleft}

\item{Project Website: \\\textit{http://grass.itc.it}}

\item{GRASS Wiki: \\\textit{http://grass.gdf.hannover.de/wiki}}

\item{GRASS-IRC channel on freenode: \\\textit{irc://freenode.org \#grass}}

\item{GRASS Promotion Team: \\\textit{malte@geog.fu-berlin.de}}

\item{GRASS mailing lists: \\\textit{http://grass.itc.it/community/support.php}}

%\end{flushleft}

\end{itemize}

\end{document}

==Pix==
I put the images as a tarball (7mb) here:

[http://www.geog.fu-berlin.de/~malte/pix.tar.gz http://www.geog.fu-berlin.de/~malte/pix.tar.gz]

[[Category:Promotion]]

GRASS promotion team

2007-01-23T14:51:19Z

⚠️Guano: /* People (add yourself here) */

=GRASS Promotion=
Here can the GRASS promotion team coordinate its work.

'''Where can we get some ressources (financial or support) to print the brochures'''

= Todo (add yourself) =
== As soon as possible ==
1. [[Technical Data sheet]] (maybe format like a brochure)

2. Newbie friendly tutorial

3. [[Grassbrochure]] (Latex based for easy translation) [Malte Halbey-Martin]

4. Live CD (mainenance to keep uptodate)

5. Find some funding for printing the brochure

== Later or synchronous ==
* Newbie Forum (in progress)
* Contact Databases
* Case Histories of GRASS adoption (?)
* Nice Posters with applications where GRASS hass been adopted
* workaround of [http://www.osgeo.org/grass http://www.osgeo.org/grass]

= People (add yourself here) =
Malte Halbey-Martin (maltehalbey on irc): email malte [at] geog.fu-berlin.de

Ominiverdi ( doktoreas or ominoverde on irc ) : email info [at] ominiverdi.org

Chip Mefford (cpm on irc) : email cpm [at] daviswv.net or cpm [at] well.com

Carlos Grohmann: email carlos.grohmann [at] gmail.com

GRASS promotion team

2007-01-23T14:50:38Z

⚠️Guano: /* Later or synchronous */

AddOns

2006-09-27T18:01:11Z

⚠️Guano: /* Raster add-ons */

This page contains references to user contributions and add-ons

__TOC__

==Copyright and licensing information==

''Please be sure to include copyright and licensing information in the header comments of your code so that others may know how they can use, extend, modify, and redistribute your work.''

e.g. at the top of a shell script:
<pre>
#!/bin/sh
############################################################################
#
# MODULE: v.in.e00
#
# AUTHOR(S): Markus Neteler, Otto Dassau
#
# PURPOSE: Import E00 data into a GRASS vector map
# Imports single and split E00 files (.e00, .e01, .e02 ...)
#
# COPYRIGHT: (c) 2004, 2005 GDF Hannover bR, http://www.gdf-hannover.de
#
# This program is free software under the GNU General Public
# License (>=v2). Read the file COPYING that comes with GRASS
# for details.
#
#############################################################################
#
# REQUIREMENTS:
# - avcimport: http://avce00.maptools.org

[script follows]
</pre>

==Shell script coding standards==

Please have a look at our [http://grass.itc.it/grass61/source/SUBMITTING_SCRIPTS Shell script coding standards] before submitting here.

==Miscellaneous Add-ons==

* [http://bambi.otago.ac.nz/hamish/grass/utm_which_zone.sh utm_which_zone.sh] is a shell script to determine UTM zone from Lat/Lon input. Requires [http://www.octave.org Octave] to be installed. A shell-only version is [http://dcalvelo.free.fr/grass/utm_which_zone_sh.sh available] which only requires awk. '''Authors''': Hamish Bowman (Octave part), Markus Neteler (shell script wrapper), Daniel Calvelo (sh+awk version)

* Perl scripts for converting data forth and back between Excel files and PostgreSQL: [http://dcalvelo.free.fr/grass/pg2xls.pl pg2xls.pl] reads data from PostgreSQL and produces an excel workbook; [http://dcalvelo.free.fr/grass/xls2sql.pl xls2sql.pl] reads excel files and outputs SQL statements to be fed into an RDBMS. Both scripts need modules from [http://www.cpan.org CPAN], especially [http://search.cpan.org/dist/Spreadsheet-ParseExcel/ Spreadsheet::ParseExcel] for xls2sql.pl and [http://search.cpan.org/~tmtm/Spreadsheet-WriteExcel-FromDB Spreadsheet::WriteExcel::FromDB] and its dependencies for pg2sql.pl. Check the source headers for more info. '''Authors:''' Daniel Calvelo (xls2sql.pl), Markus Neteler (pg2xls.pl)

* [http://dream.lrrl.arch.tu-muenchen.de/~wqual/perl/dbf2sql.tgz dbf2sql] is a Perl script for translating dbf-tables into a sql-command. dbf-tables are read using dbfdump-command from dbd-xbase-perl module ([http://search.cpan.org/~janpaz/DBD-XBase-0.241/ dbd::xbase] and [http://search.cpan.org/~jv/Getopt-Long-2.35/lib/Getopt/Long.pm getopt::long] have to be installed from CPAN first). There are problems, if the last column of the table contains characters. Suggestions for improvements welcome! '''Author:'''Wolfgang Qual

* [http://www.igc.usp.br/pessoais/guano/downloads/azimuth2.c azimuth2.c] is a small C program to calculate the azimuth and length of vector lines exported by GRASS-GIS as ASCII files (like this: v.out.ascii input=vector output=ascii format=standard). It is useful for create rose diagrams of lineament maps. Improvements on the original code after suggestions by Örs Téglásy, Hungary. '''Author:''' Carlos Henrique Grohmann

==GRASS 5.x==

===Vector add-ons for GRASS 5===

* See here: http://grass.itc.it/download/addons.php

===Raster add-ons for GRASS 5===

* See here: http://grass.itc.it/download/addons.php

* [http://www.valledemexico.ambitiouslemon.com/gwmodelling.html r.gmtg] The groundwater modelling tool for grass. A module to use MODFLOW within GRASS. '''Author''': Jaime Carrera

==GRASS 6.x==

===Vector add-ons===

* [http://geni.ath.cx/grass/v.out.gmt v.out.gmt] is a shell script that exports a polygon vector file into GMT xy file. psbasemap code was copied from Hamish's r.out.gmt. '''Author:''' Huidae Cho, Hamish Bowman, Dylan Beaudette

* [http://geo4.uibk.ac.at/tilde/kindl/grass/v.strahler.tgz v.strahler] is a module that calculates the Strahler Order for all lines of a given dendritic network. '''Author:''' Florian Kindl

* [http://svg.cc/grass/index.html v.out.svg] is a module that exports SVG notation along with optional attribute data directly from GRASS 6.x vector layers. '''Author:''' Klaus Förster

* [http://les-ejk.cz/programs/trees.html v.trees3d] is a module for making 3D trees from input vector point file. '''Author:''' Jachym Cepicky

* [http://www.public.asu.edu/~cmbarton/files/grass_scripts/v.lda v.lda] is a shell script for calculating Ian Johnson's (U. Sidney) Local Density Analysis values to measure clustering of point data at different neighborhood radii. There is an option to create a simple line graph of the results. There have been reports of problems creating the line graph on Cygwin installations of GRASS. '''Author:''' Michael Barton

* [http://www.public.asu.edu/~cmbarton/files/grass_scripts/v.append v.append] is a shell script combining two vector files AND their associated attribute tables. The vector files should be of the same type and, for best results, should have identically formatted attribute tables. '''Author:''' Michael Barton

* [http://www.shockfamily.net/cedric/grass/v.group v.group] generates a new vector map with the same geometry as an existing map. The new map has categories and a table based on grouping by the values in certain columns of the existing map's table. The values in these columns are preserved in the table for the new map. It's like a v.reclass that preserves data. '''Author:''' Cedric Shock

* [http://bambi.otago.ac.nz/hamish/grass/v.out.ascii.db v.out.ascii.db] is a shell script for exporting vector point data coordinates and selected attribute columns to either a file or to the console. '''Author:''' Hamish Bowman

* [http://www.fle.czu.cz/~jachym/programs/v.rasterbounds v.rasterbounds] is a shell script for creating polygon-vector file of rasterfile boundaries. The best version of GRASS is 6.1+. If you are using GRASS < 6.1, you have to be in the same mapset as your raster maps are from. '''Author:''' Jachym Cepicky

* [http://www.fle.czu.cz/~jachym/programs/v.3Dtin v.3Dtin] is a shell script for making 3D-vector of the 2D ouput from ''v.delauny''. '''Author:''' Jachym Cepicky

* [http://www.clubwebcanada.ca/twiens/v.sample.buffer.tgz v.sample.buffer] is a shell script that samples rasters in buffers of a specified size around features in a specified vector file. Sampling results are added as attributes to the vector file. This script was designed for sampling vegetation indices and DEM derived attributes for bird point counts. Sampling results can be one or more basic statistics such as mean, range, max, etc. '''Author:''' Trevor Wiens

* [http://www.gfosservices.it/materiale_didattico/moduli/v.variogram.tar.gz v.variogram] is a script that create an omnidirectional experimental semi-variogram. This scripts require R-statistics software installed on your machine. '''Author:''' Ivan Marchesini, Pierluigi De Rosa

* [http://www.gfosservices.it/materiale_didattico/moduli/v.krige.tar.gz v.krige] is a script that do a surface interpolation from vector point data by Kriging method.The interpolated value of a cell is determined by using an omnidirectional variogram model fitted starting from model parameter given by user desumed from the experimental semi variogram produced by v.variogram. '''Author:''' Ivan Marchesini, Pierluigi De Rosa

* [http://ngeo.de/grassstuff/v.lmeasure v.lmeasure] and [http://ngeo.de/grassstuff/v.revlmeasure v.revlmeasure] are two perl scripts that place equidistant vector points along a given arbitrary vector line starting from the beginning or end of the vector line, respectively. Resulting vector points are labeled with the distance from origin. '''Author:''' Mats Schuh

* [http://david.p.finlayson.googlepages.com/v.swathwidth v.swathwidth] creates a vector map representing the sea bottom coverage of a multibeam (swath) sonar survey. '''Author:''' David Finlayson

* [http://kufaya.googlepages.com/v.flip.tar.gz v.flip] flips the direction of selected vector lines. '''Author:''' Maciej Sieczka

* [http://phygeo7.geo.uni-augsburg.de/gis2/scripts/v.digatt v.digatt] (shell script) Interactively assign numeric table attributes to series of vector objects. It is meant to be effective by avoiding to type in the attribute value for all single objects again and again. The user is prompted for typing in an attribute value which is assigned to all objects selected by mouseclick afterwards. Next the display is redrawn after updating the table column. Zooming allows to change the region before the old value can be reused or a new one can be typed in (or copied by mouse from another object) in order to assign it to the next series of objects etc. It is tested not very extensively yet. Therefore better work with a copy of your map and consider using v.digit or d.what.vect -e alternatively. [http://phygeo7.geo.uni-augsburg.de/gis2/scripts/v.digatt.png screenshot]. '''Author:''' Andreas Philipp

* [http://k153-85.fsv.cvut.cz/cgi-bin/viewcvs.cgi/grass6/vector/v.in.gama/ v.in.gama] converts [http://www.gnu.org/software/gama/ GNU GaMa] XML output file to a GRASS vector map layer. '''Author:''' Martin Landa

===Raster add-ons===

* [http://www.igc.usp.br/pessoais/guano/downloads/r.roughness r.roughness] is a shell script to calculate the surface roughness of a DEM, using r.surf.area and v.surf.rst. (for GRASS versions 6.1 and above)
* [http://www.igc.usp.br/pessoais/guano/downloads/r.roughness60 r.roughness60] - for GRASS versions 6.0.X '''Author:''' Carlos Henrique Grohmann

* [http://www.fle.czu.cz/~jachym/programs/grass/r.gauss.tgz r.gauss] is Gaussian and Laplacian of Gaussian filter for GRASS. It is written in C language. '''Author:''' Jachym Cepicky

* [http://www.fle.czu.cz/~jachym/programs/grass/r.mlv.tgz r.mlv] is Mean of least variance filter for GRASS. It is an edge-preserving (or even edge-enhacing) filter, which should serve for removing additive noise from images. It is written in C language. '''Author:''' Jachym Cepicky

* [http://www.fle.czu.cz/~jachym/programs/grass/r.bilateral.tgz r.bilateral] Bilateral filter is an edge-preserving filter, which combines domain and range filtering. It is written in C language. '''Author:''' Jachym Cepicky

* [http://www.fle.czu.cz/~jachym/programs/zc.pl Zero crossing] is a simple Perl script, finds the ,,zero crossings`` from the Laplacian of Gaussian filter (see above). It is really very simple, the edges don't need to be really on that pixel, where they are detected, no interpolation is performed. '''Author:''' Jachym Cepicky

'''Usage:'''
zc.pl -i input -o output |r.mapcalc

* [http://www.fle.czu.cz/~jachym/programs/local_max.pl Local maxima] is a Perl script for <code>r.mapcalc</code>. It detects local maxima of the image. '''Author:''' Jachym Cepicky

'''Usage:'''
local_maxima.pl -i input -o output -s matrix_size|r.mapcalc

* [http://bambi.otago.ac.nz/hamish/grass/r.out.gmt r.out.gmt] is a GRASS script for exporting a GRASS raster map into a [[http://www.soest.hawaii.edu/gmt/ GMT]] grid file. It also creates a GMT color table from the data and can generate some GMT commands for plotting a postscript file. (code is experimental, but functional) see also http://169.237.35.250/~dylan/grass_user_group/#GMT_and_GRASS-overview '''Authors:''' Hamish Bowman, Dylan Beaudette

* [http://geni.ath.cx/grass/r.out.gmt yet another r.out.gmt] is a modified version of Hamish's r.out.gmt. Added options for title, xlabel, ylabel, comment, and map width. Removed any settings that can be changed by gmtset for more flexibility. '''Author:''' Hamish Bowman, Huidae Cho, Dylan Beaudette

* [http://bambi.otago.ac.nz/hamish/grass/r.pack r.pack] and [http://bambi.otago.ac.nz/hamish/grass/r.unpack r.unpack] are two GRASS scripts for transfering raster maps to another computer as a single file. '''Author:''' Hamish Bowman

* [http://bambi.otago.ac.nz/hamish/grass/dominant_dir.m dominant_dir.m] and [http://bambi.otago.ac.nz/hamish/grass/calc_terraflow_dir.m calc_terraflow_dir.m] are two Matlab scripts for determining the dominant flow direction from a r.terraflow MFD map and converting into a GRASS aspect map for use with d.rast.arrow, etc. '''Author:''' Hamish Bowman

* [http://www-pool.math.tu-berlin.de/~soeren/grass/modules/ r.in.onearth] for download and import satellite images direct from the NASA onearth WMS server into GRASS. '''Author:''' Soeren Gebbert

* [http://www.shockfamily.net/cedric/grass/r.tileset r.tileset] generates a list of tiles and sizes in a source projection that cover the region in the current database with appropriate resolution. The size of individual tiles can be constrained. Only tiles intersecting the current region are returned. These tilings are appropriate for requesting data from another projection to meet the specifications of the current region. For example, it could be used to generate tile requests to a latitude / longitude WMS server like this <code>r.tileset -w sourceproj="+init=epsg:4326"</code>. '''Author:''' Cedric Shock

* [ftp://gsca.nrcan.gc.ca/outgoing/Patton/Grass/r.csr.tar.gz r.csr] integrates several Grass programs to produce colored, shaded-relief rasters in one step. Accepts single or multiple elevation/bathymetry maps as input; optionally will fill data holidays with 3x3 median filter, multiple times, if required; can apply color maps from a) input raster, b) another raster in MAPSET, or c) from a rules file; otherwise, rainbow colorbar is applied. Output colored, shaded-relief rasters can optionally be exported to tiff format and archived using tar with gzip/bzip2 compression if appropriate flags are given. Shading parameters can be modified, though useful defaults are given. (Right-click and choose 'Save Link As') '''Author:''' Eric Patton

* [ftp://gsca.nrcan.gc.ca/outgoing/Patton/Grass/r.fragment.tar.gz r.fragment] fragments a raster into a user-defined set of smaller tiles according to an input number of rows and columns. Optionally, a null value threshold can be set to filter out candidate tiles that would have a large percentage of null cells. (Right-click and choose 'Save Link As') '''Author:''' Eric Patton

* [http://david.p.finlayson.googlepages.com/r.eucdist r.eucdist] creates a raster map estimating the euclidean distance from known cells. '''Author:''' David Finlayson

* [http://david.p.finlayson.googlepages.com/r.smoothpatch r.smoothpatch] creates a composite of two rasters using a distance-weighted average across the transition to smooth the edges. '''Author:''' David Finlayson

* [http://www.faunalia.it/download/r_li/ r.li] is meant to be a more flexible and faster replacement of the old r.le. Currently under development (help welcome). 
[http://www.faunalia.com/mediawiki/index.php/R_li Wiki page] 
[http://www.faunalia.com/cgi-bin/mailman/listinfo/r.li Mailing list] 
'''Authors:''' Claudio Porta, Davide Spano, Serena Pallecchi, [http://www.faunalia.it Faunalia]

* [http://kufaya.googlepages.com/r.surf.nnbathy.tar.gz r.surf.nnbathy] interpolates surface from raster input using [http://www.marine.csiro.au/~sakov/ nn] natural neighbor intepolation library. '''Author:''' Maciej Sieczka

 

===General add-ons===

* [http://www.gdf-hannover.de/dassau/g.laptop/g.laptop.sh g.laptop.sh] is an interactive shell script to extract raster and vector data from current Location into a new one. Data can be copied or extracted in current or original resolution and region extend. This script was written to extract smaller parts of a GRASS location to be able to present them on a laptop without the necessity to transfer huge data. Maps do not have to be in the same mapset. '''Author:''' Otto Dassau

* '''''Readline completion''''' for GRASS commands under the bash shell: [http://www.sorokine.info/grass-complete/ grass-complete] won't clutter the environment but needs to be installed; [http://dcalvelo.free.fr/grass/grass_rlcompleter.sh grass_rlcompleter.sh] needs almost no installation but will pollute the environment. Grass-Complete currently requires Bash version 2.05 for proper install. '''Author:''' Alexandre Sorokine (grass-complete), Daniel Calvelo (grass_rlcompleter.sh)
 
=== Imagery add-ons ===

* [http://www.star.ait.ac.th/~yann/6s/i.atcorr.1.3.1a.tar.gz i.atcorr] Atmospheric Correction using Christo Zietsman's implementation of 6s code in C/C++. The Old Page was rescued by Christo recently and copied [http://www.star.ait.ac.th/~yann/6s/ here]. Compiled in CVS but not tested. Update: The source code is not yet functional in GRASS CVS, Adaptation is going-on. '''Author:''' Christo Zietsman

* [http://bambi.otago.ac.nz/hamish/grass/gdal/i.warp61 i.warp61] is a shell script that will use gdalwarp to rectify a raw input image using thin plate splines. The map should be imported into GRASS with r.in.gdal and GCPs set with i.points. Input is the raw image (GeoTIFF, JPEG, etc). Output is a GeoTIFF in the imagery group's target location's map projection. Requires a recent (early 2006) version of GRASS 6.1, or newer. '''Author:''' Hamish Bowman
 
=== Display add-ons ===

* [http://www.ornl.gov/sci/gist/software/grass/ pd-GRASS]: Parallel Display for GRASS GIS '''Author:''' Alex Sorokine

==== [[IconSymbols]] ====
* [[IconSymbols|Symbols]] which can be used with ''d.vect, d.graph'', and ''ps.map''.

* [http://bambi.otago.ac.nz/hamish/grass/d.frame.quarter d.frame.quarter] is a shell script that will split the display into four quadrants using ''d.frame''. Individual frames are named ''uno, dos, tres, cuatro'', and ''full_screen''. '''Author:''' Hamish Bowman

* [ftp://gsca.nrcan.gc.ca/outgoing/Patton/Grass/d.hyperlink.tar.gz d.hyperlink] is an interactive shell script that allows the viewing of hyperlinked images from a vector's attribute table in an external image viewer. Queries can be made via SQL statements or interactive mouse-clicking. The attribute table must be pre-populated with a column containing the image to link the vector to; the user also specifies the image folder in the current MAPSET where the images are located. The script currently supports gimp, Eye of Gnome, gthumb, gpdf, and Inkscape image viewers. (Right-click and choose 'Save Link As') '''Author: '''Eric Patton

* [http://bambi.otago.ac.nz/hamish/grass/d.stations d.stations] is a shell script that quickly displays vector points (or sites for GRASS 5.4 and below). '''Author:''' Hamish Bowman

* [http://bambi.otago.ac.nz/hamish/grass/d.varea d.varea] is a shell script that quickly displays vector areas. '''Author:''' Hamish Bowman

===Postscript add-ons===

* [http://les-ejk.cz/programs/grass/ps.atlas ps.atlas] is a shell script that makes more maps on current region according to input *.psmap file. General map can be stored as vector file. The resulting *.eps maps can be automatically converted to *.pdf files. '''Author:''' Jachym Cepicky

* [[ps.map scripts|ps.map samples/templates]]

==== [[AreaFillPatterns]] ====
* Hatches for ps.map's vareas

===GRASS and UMN Mapserver===

* [http://www.mail-archive.com/mapserver-users@lists.umn.edu/msg00086.html See interesting posting]

[[Category:Community]]
[[Category:Development]]
[[Category:Documentation]]
[[Category:Installation]]

AddOns

2006-07-22T00:18:59Z

⚠️Guano: /* Miscellaneous Add-ons */

This page contains references to user contributions and add-ons

__TOC__

==Copyright and licensing information==

''Please be sure to include copyright and licensing information in the header comments of your code so that others may know how they can use, extend, modify, and redistribute your work.''

e.g. at the top of a shell script:
<pre>
#!/bin/sh
############################################################################
#
# MODULE: v.in.e00
#
# AUTHOR(S): Markus Neteler, Otto Dassau
#
# PURPOSE: Import E00 data into a GRASS vector map
# Imports single and split E00 files (.e00, .e01, .e02 ...)
#
# COPYRIGHT: (c) 2004, 2005 GDF Hannover bR, http://www.gdf-hannover.de
#
# This program is free software under the GNU General Public
# License (>=v2). Read the file COPYING that comes with GRASS
# for details.
#
#############################################################################
#
# REQUIREMENTS:
# - avcimport: http://avce00.maptools.org

[script follows]
</pre>

==Shell script coding standards==

Please have a look at our [http://grass.itc.it/grass61/source/SUBMITTING_SCRIPTS Shell script coding standards] before submitting here.

==Miscellaneous Add-ons==

* [http://bambi.otago.ac.nz/hamish/grass/utm_which_zone.sh utm_which_zone.sh] is a shell script to determine UTM zone from Lat/Lon input. Requires [http://www.octave.org Octave] to be installed. A shell-only version is [http://dcalvelo.free.fr/grass/utm_which_zone_sh.sh available] which only requires awk. '''Authors''': Hamish Bowman (Octave part), Markus Neteler (shell script wrapper), Daniel Calvelo (sh+awk version)

* Perl scripts for converting data forth and back between Excel files and PostgreSQL: [http://dcalvelo.free.fr/grass/pg2xls.pl pg2xls.pl] reads data from PostgreSQL and produces an excel workbook; [http://dcalvelo.free.fr/grass/xls2sql.pl xls2sql.pl] reads excel files and outputs SQL statements to be fed into an RDBMS. Both scripts need modules from [http://www.cpan.org CPAN], especially [http://search.cpan.org/dist/Spreadsheet-ParseExcel/ Spreadsheet::ParseExcel] for xls2sql.pl and [http://search.cpan.org/~tmtm/Spreadsheet-WriteExcel-FromDB Spreadsheet::WriteExcel::FromDB] and its dependencies for pg2sql.pl. Check the source headers for more info. '''Authors:''' Daniel Calvelo (xls2sql.pl), Markus Neteler (pg2xls.pl)

* [http://www.igc.usp.br/pessoais/guano/downloads/azimuth2.c azimuth2.c] is a small C program to calculate the azimuth and length of vector lines exported by GRASS-GIS as ASCII files (like this: v.out.ascii input=vector output=ascii format=standard). It is useful for create rose diagrams of lineament maps. Improvements on the original code after suggestions by Örs Téglásy, Hungary. '''Author:''' Carlos Henrique Grohmann

==GRASS 5.x==

===Vector add-ons for GRASS 5===

* See here: http://grass.itc.it/download/addons.php

===Raster add-ons for GRASS 5===

* See here: http://grass.itc.it/download/addons.php

* [http://www.valledemexico.ambitiouslemon.com/gwmodelling.html r.gmtg] The groundwater modelling tool for grass. A module to use MODFLOW within GRASS. '''Author''': Jaime Carrera

==GRASS 6.x==

===Vector add-ons===

* [http://les-ejk.cz/programs/trees.html v.trees3d] is module for making 3D trees from input vector point file. '''Author:''' Jachym Cepicky

* [http://www.public.asu.edu/~cmbarton/files/grass_scripts/v.lda v.lda] is a shell script for calculating Ian Johnson's (U. Sidney) Local Density Analysis values to measure clustering of point data at different neighborhood radii. There is an option to create a simple line graph of the results. There have been reports of problems creating the line graph on Cygwin installations of GRASS. '''Author:''' Michael Barton

* [http://www.public.asu.edu/~cmbarton/files/grass_scripts/v.append v.append] is a shell script combining two vector files AND their associated attribute tables. The vector files should be of the same type and, for best results, should have identically formatted attribute tables. '''Author:''' Michael Barton

* [http://www.shockfamily.net/cedric/grass/v.group v.group] generates a new vector map with the same geometry as an existing map. The new map has categories and a table based on grouping by the values in certain columns of the existing map's table. The values in these columns are preserved in the table for the new map. It's like a v.reclass that preserves data. '''Author:''' Cedric Shock

* [http://bambi.otago.ac.nz/hamish/grass/v.out.ascii.db v.out.ascii.db] is a shell script for exporting vector point data coordinates and selected attribute columns to either a file or to the console. '''Author:''' Hamish Bowman

* [http://www.fle.czu.cz/~jachym/programs/v.rasterbounds v.rasterbounds] is a shell script for creating polygon-vector file of rasterfile boundaries. The best version of GRASS is 6.1+. If you are using GRASS < 6.1, you have to be in the same mapset as your raster maps are from. '''Author:''' Jachym Cepicky

* [http://www.fle.czu.cz/~jachym/programs/v.3Dtin v.3Dtin] is a shell script for making 3D-vector of the 2D ouput from ''v.delauny''. '''Author:''' Jachym Cepicky

* [http://www.clubwebcanada.ca/twiens/v.sample.buffer.tgz v.sample.buffer] is a shell script that samples rasters in buffers of a specified size around features in a specified vector file. Sampling results are added as attributes to the vector file. This script was designed for sampling vegetation indices and DEM derived attributes for bird point counts. Sampling results can be one or more basic statistics such as mean, range, max, etc. '''Author:''' Trevor Wiens

* [http://www.unipg.it/~ivanm/v.variogram.tar.gz v.variogram] is a script that create an omnidirectional experimental semi-variogram. This scripts require R-statistics software installed on your machine. '''Author:''' Ivan Marchesini, Pierluigi De Rosa

* [http://www.unipg.it/~ivanm/v.krige.tar.gz v.krige] is a script that do a surface interpolation from vector point data by Kriging method.The interpolated value of a cell is determined by using an omnidirectional variogram model fitted starting from model parameter given by user desumed from the experimental semi variogram produced by v.variogram. '''Author:''' Ivan Marchesini, Pierluigi De Rosa

* [http://ngeo.de/grassstuff/v.lmeasure v.lmeasure] and [http://ngeo.de/grassstuff/v.revlmeasure v.revlmeasure] are two perl scripts that place equidistant vector points along a given arbitrary vector line starting from the beginning or end of the vector line, respectively. Resulting vector points are labeled with the distance from origin. '''Author:''' Mats Schuh

* [http://david.p.finlayson.googlepages.com/v.swathwidth v.swathwidth] creates a vector map representing the sea bottom coverage of a multibeam (swath) sonar survey. '''Author:''' David Finlayson

* [http://www.biol.uni.wroc.pl/sieczka/udostepnione/grass_scripts/v.flip.tar.gz v.flip] flips the direction of selected vector lines. '''Author:''' Maciej Sieczka

* [http://phygeo7.geo.uni-augsburg.de/gis2/scripts/v.digatt v.digatt] (shell script) Interactively assign numeric table attributes to series of vector objects. It is meant to be effective by avoiding to type in the attribute value for all single objects again and again. The user is prompted for typing in an attribute value which is assigned to all objects selected by mouseclick afterwards. Next the display is redrawn after updating the table column. Zooming allows to change the region before the old value can be reused or a new one can be typed in (or copied by mouse from another object) in order to assign it to the next series of objects etc. It is tested not very extensively yet. Therefore better work with a copy of your map and consider using v.digit or d.what.vect -e alternatively. [http://phygeo7.geo.uni-augsburg.de/gis2/scripts/v.digatt.png screenshot]. '''Author:''' Andreas Philipp

===Raster add-ons===

* [http://www.igc.usp.br/pessoais/guano/downloads/r.roughness r.roughness] is a shell script to calculate the surface roughness of a DEM, using r.surf.area and v.surf.rst. '''Author:''' Carlos Henrique Grohmann

* [http://www.fle.czu.cz/~jachym/programs/grass/r.gauss.tgz r.gauss] is Gaussian and Laplacian of Gaussian filter for GRASS. It is written in C language. '''Author:''' Jachym Cepicky

* [http://www.fle.czu.cz/~jachym/programs/grass/r.mlv.tgz r.mlv] is Mean of least variance filter for GRASS. It is an edge-preserving (or even edge-enhacing) filter, which should serve for removing additive noise from images. It is written in C language. '''Author:''' Jachym Cepicky

* [http://www.fle.czu.cz/~jachym/programs/grass/r.bilateral.tgz r.bilateral] Bilateral filter is an edge-preserving filter, which combines domain and range filtering. It is written in C language. '''Author:''' Jachym Cepicky

* [http://www.fle.czu.cz/~jachym/programs/zc.pl Zero crossing] is a simple Perl script, finds the ,,zero crossings`` from the Laplacian of Gaussian filter (see above). It is really very simple, the edges don't need to be really on that pixel, where they are detected, no interpolation is performed. '''Author:''' Jachym Cepicky

'''Usage:'''
zc.pl -i input -o output |r.mapcalc

* [http://www.fle.czu.cz/~jachym/programs/local_max.pl Local maxima] is a Perl script for <code>r.mapcalc</code>. It detects local maxima of the image. '''Author:''' Jachym Cepicky

'''Usage:'''
local_maxima.pl -i input -o output -s matrix_size|r.mapcalc

* [http://bambi.otago.ac.nz/hamish/grass/r.out.gmt r.out.gmt] is a GRASS script for exporting a GRASS raster map into a [[http://www.soest.hawaii.edu/gmt/ GMT]] grid file. It also creates a GMT color table from the data and can generate some GMT commands for plotting a postscript file. (code is experimental, but functional) see also http://169.237.35.250/~dylan/grass_user_group/#GMT_and_GRASS-overview '''Authors:''' Hamish Bowman, Dylan Beaudette

* [http://bambi.otago.ac.nz/hamish/grass/r.pack r.pack] and [http://bambi.otago.ac.nz/hamish/grass/r.unpack r.unpack] are two GRASS scripts for transfering raster maps to another computer as a single file. '''Author:''' Hamish Bowman

* [http://bambi.otago.ac.nz/hamish/grass/dominant_dir.m dominant_dir.m] and [http://bambi.otago.ac.nz/hamish/grass/calc_terraflow_dir.m calc_terraflow_dir.m] are two Matlab scripts for determining the dominant flow direction from a r.terraflow MFD map and converting into a GRASS aspect map for use with d.rast.arrow, etc. '''Author:''' Hamish Bowman

* [http://www-pool.math.tu-berlin.de/~soeren/grass/modules/ r.in.onearth] for download and import satellite images direct from the NASA onearth WMS server into GRASS. '''Author:''' Soeren Gebbert

* [http://www.shockfamily.net/cedric/grass/r.tileset r.tileset] generates a list of tiles and sizes in a source projection that cover the region in the current database with appropriate resolution. The size of individual tiles can be constrained. Only tiles intersecting the current region are returned. These tilings are appropriate for requesting data from another projection to meet the specifications of the current region. For example, it could be used to generate tile requests to a latitude / longitude WMS server like this <code>r.tileset -w sourceproj="+init=epsg:4326"</code>. '''Author:''' Cedric Shock

* [ftp://gsca.nrcan.gc.ca/outgoing/Patton/Grass/r.csr.tar.gz r.csr] integrates several Grass programs to produce colored, shaded-relief rasters in one step. Accepts single or multiple elevation/bathymetry maps as input; optionally will fill data holidays with 3x3 median filter, multiple times, if required; can apply color maps from a) input raster, b) another raster in MAPSET, or c) from a rules file; otherwise, rainbow colorbar is applied. Output colored, shaded-relief rasters can optionally be exported to tiff format and archived using tar with gzip/bzip2 compression if appropriate flags are given. Shading parameters can be modified, though useful defaults are given. (Right-click and choose 'Save Link As') '''Author:''' Eric Patton

* [ftp://gsca.nrcan.gc.ca/outgoing/Patton/Grass/r.fragment.tar.gz r.fragment] fragments a raster into a user-defined set of smaller tiles according to an input number of rows and columns. Optionally, a null value threshold can be set to filter out candidate tiles that would have a large percentage of null cells. (Right-click and choose 'Save Link As') '''Author:''' Eric Patton

* [http://david.p.finlayson.googlepages.com/r.eucdist r.eucdist] creates a raster map estimating the euclidean distance from known cells. '''Author:''' David Finlayson

* [http://david.p.finlayson.googlepages.com/r.smoothpatch r.smoothpatch] creates a composite of two rasters using a distance-weighted average across the transition to smooth the edges. '''Author:''' David Finlayson

* [http://www.faunalia.it/download/r_li/ r.li] is meant to be a more flexible and faster replacement of the old r.le. Currently under development. '''Authors:''' Claudio Porta, Davide Spano, Serena Pallecchi, [http://www.faunalia.it Faunalia]

* [http://www.biol.uni.wroc.pl/sieczka/udostepnione/grass_scripts/r.surf.nnbathy.tar.gz r.surf.nnbathy] interpolates surface from rasterized input using [http://www.marine.csiro.au/~sakov/ nn] natural neighbor intepolation library. '''Author:''' Maciej Sieczka

* [http://www.star.ait.ac.th/~yann/6s/i.atcorr.1.3.1a.tar.gz i.atcorr] Atmospheric Correction using Christo Zietsman's implementation of 6s code in C/C++. The Old Page was rescued by Christo recently and copied [http://www.star.ait.ac.th/~yann/6s/ here]. Compiled in CVS but not tested. '''Author:''' Christo Zietsman

===General add-ons===

* [http://www.gdf-hannover.de/dassau/g.laptop/g.laptop.sh g.laptop.sh] is an interactive shell script to extract raster and vector data from current Location into a new one. Data can be copied or extracted in current or original resolution and region extend. This script was written to extract smaller parts of a GRASS location to be able to present them on a laptop without the necessity to transfer huge data. Maps do not have to be in the same mapset. '''Author:''' Otto Dassau

* '''''Readline completion''''' for GRASS commands under the bash shell: [http://www.sorokine.info/grass-complete/ grass-complete] won't clutter the environment but needs to be installed; [http://dcalvelo.free.fr/grass/grass_rlcompleter.sh grass_rlcompleter.sh] needs almost no installation but will pollute the environment. Grass-Complete currently requires Bash version 2.05 for proper install. '''Author:''' Alexandre Sorokine (grass-complete), Daniel Calvelo (grass_rlcompleter.sh)

=== Display add-ons ===

==== [[IconSymbols]] ====
* [[IconSymbols|Symbols]] which can be used with ''d.vect, d.graph'', and ''ps.map''.

* [http://bambi.otago.ac.nz/hamish/grass/d.frame.quarter d.frame.quarter] is a shell script that will split the display into four quadrants using ''d.frame''. Individual frames are named ''uno, dos, tres, cuatro'', and ''full_screen''. '''Author:''' Hamish Bowman

* [ftp://gsca.nrcan.gc.ca/outgoing/Patton/Grass/d.hyperlink.tar.gz d.hyperlink] is an interactive shell script that allows the viewing of hyperlinked images from a vector's attribute table in an external image viewer. Queries can be made via SQL statements or interactive mouse-clicking. The attribute table must be pre-populated with a column containing the image to link the vector to; the user also specifies the image folder in the current MAPSET where the images are located. The script currently supports gimp, Eye of Gnome, gthumb, gpdf, and Inkscape image viewers. (Right-click and choose 'Save Link As') '''Author: '''Eric Patton

* [http://bambi.otago.ac.nz/hamish/grass/d.stations d.stations] is a shell script that quickly displays vector points (or sites for GRASS 5.4 and below). '''Author:''' Hamish Bowman

* [http://bambi.otago.ac.nz/hamish/grass/d.varea d.varea] is a shell script that quickly displays vector areas. '''Author:''' Hamish Bowman

===Postscript add-ons===

* [http://les-ejk.cz/programs/grass/ps.atlas ps.atlas] is a shell script that makes more maps on current region according to input *.psmap file. General map can be stored as vector file. The resulting *.eps maps can be automatically converted to *.pdf files. '''Author:''' Jachym Cepicky

* [[ps.map scripts|ps.map samples/templates]]

==== [[AreaFillPatterns]] ====
* Hatches for ps.map's vareas

===GRASS and UMN Mapserver===

* [http://www.mail-archive.com/mapserver-users@lists.umn.edu/msg00086.html See interesting posting]

[[Category:Community]]
[[Category:Development]]
[[Category:Documentation]]
[[Category:Installation]]

AddOns

2006-07-19T21:29:20Z

⚠️Guano: /* Raster add-ons */

This page contains references to user contributions and add-ons

__TOC__

==Copyright and licensing information==

''Please be sure to include copyright and licensing information in the header comments of your code so that others may know how they can use, extend, modify, and redistribute your work.''

e.g. at the top of a shell script:
<pre>
#!/bin/sh
############################################################################
#
# MODULE: v.in.e00
#
# AUTHOR(S): Markus Neteler, Otto Dassau
#
# PURPOSE: Import E00 data into a GRASS vector map
# Imports single and split E00 files (.e00, .e01, .e02 ...)
#
# COPYRIGHT: (c) 2004, 2005 GDF Hannover bR, http://www.gdf-hannover.de
#
# This program is free software under the GNU General Public
# License (>=v2). Read the file COPYING that comes with GRASS
# for details.
#
#############################################################################
#
# REQUIREMENTS:
# - avcimport: http://avce00.maptools.org

[script follows]
</pre>

==Shell script coding standards==

Please have a look at our [http://grass.itc.it/grass61/source/SUBMITTING_SCRIPTS Shell script coding standards] before submitting here.

==Miscellaneous Add-ons==

* [http://bambi.otago.ac.nz/hamish/grass/utm_which_zone.sh utm_which_zone.sh] is a shell script to determine UTM zone from Lat/Lon input. Requires [http://www.octave.org Octave] to be installed. A shell-only version is [http://dcalvelo.free.fr/grass/utm_which_zone_sh.sh available] which only requires awk. '''Authors''': Hamish Bowman (Octave part), Markus Neteler (shell script wrapper), Daniel Calvelo (sh+awk version)

* Perl scripts for converting data forth and back between Excel files and PostgreSQL: [http://dcalvelo.free.fr/grass/pg2xls.pl pg2xls.pl] reads data from PostgreSQL and produces an excel workbook; [http://dcalvelo.free.fr/grass/xls2sql.pl xls2sql.pl] reads excel files and outputs SQL statements to be fed into an RDBMS. Both scripts need modules from [http://www.cpan.org CPAN], especially [http://search.cpan.org/dist/Spreadsheet-ParseExcel/ Spreadsheet::ParseExcel] for xls2sql.pl and [http://search.cpan.org/~tmtm/Spreadsheet-WriteExcel-FromDB Spreadsheet::WriteExcel::FromDB] and its dependencies for pg2sql.pl. Check the source headers for more info. '''Authors:''' Daniel Calvelo (xls2sql.pl), Markus Neteler (pg2xls.pl)

* [http://www.igc.usp.br/pessoais/guano/downloads/azimuth2.c azimuth2.c] is a small C programm to calculate the azimuth and length of vector lines exported by GRASS-GIS as ASCII files (like this: v.out.ascii input=vector output=ascii format=standard). It is useful for create rose diagrams of lineament maps. Improvements on the original code after suggestions by Örs Téglásy, Hungary. '''Author:''' Carlos Henrique Grohmann

==GRASS 5.x==

===Vector add-ons for GRASS 5===

* See here: http://grass.itc.it/download/addons.php

===Raster add-ons for GRASS 5===

* See here: http://grass.itc.it/download/addons.php

* [http://www.valledemexico.ambitiouslemon.com/gwmodelling.html r.gmtg] The groundwater modelling tool for grass. A module to use MODFLOW within GRASS. '''Author''': Jaime Carrera

==GRASS 6.x==

===Vector add-ons===

* [http://les-ejk.cz/programs/trees.html v.trees3d] is module for making 3D trees from input vector point file. '''Author:''' Jachym Cepicky

* [http://www.public.asu.edu/~cmbarton/files/grass_scripts/v.lda v.lda] is a shell script for calculating Ian Johnson's (U. Sidney) Local Density Analysis values to measure clustering of point data at different neighborhood radii. There is an option to create a simple line graph of the results. There have been reports of problems creating the line graph on Cygwin installations of GRASS. '''Author:''' Michael Barton

* [http://www.public.asu.edu/~cmbarton/files/grass_scripts/v.append v.append] is a shell script combining two vector files AND their associated attribute tables. The vector files should be of the same type and, for best results, should have identically formatted attribute tables. '''Author:''' Michael Barton

* [http://www.shockfamily.net/cedric/grass/v.group v.group] generates a new vector map with the same geometry as an existing map. The new map has categories and a table based on grouping by the values in certain columns of the existing map's table. The values in these columns are preserved in the table for the new map. It's like a v.reclass that preserves data. '''Author:''' Cedric Shock

* [http://bambi.otago.ac.nz/hamish/grass/v.out.ascii.db v.out.ascii.db] is a shell script for exporting vector point data coordinates and selected attribute columns to either a file or to the console. '''Author:''' Hamish Bowman

* [http://www.fle.czu.cz/~jachym/programs/v.rasterbounds v.rasterbounds] is a shell script for creating polygon-vector file of rasterfile boundaries. The best version of GRASS is 6.1+. If you are using GRASS < 6.1, you have to be in the same mapset as your raster maps are from. '''Author:''' Jachym Cepicky

* [http://www.fle.czu.cz/~jachym/programs/v.3Dtin v.3Dtin] is a shell script for making 3D-vector of the 2D ouput from ''v.delauny''. '''Author:''' Jachym Cepicky

* [http://www.clubwebcanada.ca/twiens/v.sample.buffer.tgz v.sample.buffer] is a shell script that samples rasters in buffers of a specified size around features in a specified vector file. Sampling results are added as attributes to the vector file. This script was designed for sampling vegetation indices and DEM derived attributes for bird point counts. Sampling results can be one or more basic statistics such as mean, range, max, etc. '''Author:''' Trevor Wiens

* [http://www.unipg.it/~ivanm/v.variogram.tar.gz v.variogram] is a script that create an omnidirectional experimental semi-variogram. This scripts require R-statistics software installed on your machine. '''Author:''' Ivan Marchesini, Pierluigi De Rosa

* [http://www.unipg.it/~ivanm/v.krige.tar.gz v.krige] is a script that do a surface interpolation from vector point data by Kriging method.The interpolated value of a cell is determined by using an omnidirectional variogram model fitted starting from model parameter given by user desumed from the experimental semi variogram produced by v.variogram. '''Author:''' Ivan Marchesini, Pierluigi De Rosa

* [http://ngeo.de/grassstuff/v.lmeasure v.lmeasure] and [http://ngeo.de/grassstuff/v.revlmeasure v.revlmeasure] are two perl scripts that place equidistant vector points along a given arbitrary vector line starting from the beginning or end of the vector line, respectively. Resulting vector points are labeled with the distance from origin. '''Author:''' Mats Schuh

* [http://david.p.finlayson.googlepages.com/v.swathwidth v.swathwidth] creates a vector map representing the sea bottom coverage of a multibeam (swath) sonar survey. '''Author:''' David Finlayson

* [http://www.biol.uni.wroc.pl/sieczka/udostepnione/grass_scripts/v.flip.tar.gz v.flip] flips the direction of selected vector lines. '''Author:''' Maciej Sieczka

* [http://phygeo7.geo.uni-augsburg.de/gis2/scripts/v.digatt v.digatt] (shell script) Interactively assign numeric table attributes to series of vector objects. It is meant to be effective by avoiding to type in the attribute value for all single objects again and again. The user is prompted for typing in an attribute value which is assigned to all objects selected by mouseclick afterwards. Next the display is redrawn after updating the table column. Zooming allows to change the region before the old value can be reused or a new one can be typed in (or copied by mouse from another object) in order to assign it to the next series of objects etc. It is tested not very extensively yet. Therefore better work with a copy of your map and consider using v.digit or d.what.vect -e alternatively. [http://phygeo7.geo.uni-augsburg.de/gis2/scripts/v.digatt.png screenshot]. '''Author:''' Andreas Philipp

===Raster add-ons===

* [http://www.igc.usp.br/pessoais/guano/downloads/r.roughness r.roughness] is a shell script to calculate the surface roughness of a DEM, using r.surf.area and v.surf.rst. '''Author:''' Carlos Henrique Grohmann

* [http://www.fle.czu.cz/~jachym/programs/grass/r.gauss.tgz r.gauss] is Gaussian and Laplacian of Gaussian filter for GRASS. It is written in C language. '''Author:''' Jachym Cepicky

* [http://www.fle.czu.cz/~jachym/programs/grass/r.mlv.tgz r.mlv] is Mean of least variance filter for GRASS. It is an edge-preserving (or even edge-enhacing) filter, which should serve for removing additive noise from images. It is written in C language. '''Author:''' Jachym Cepicky

* [http://www.fle.czu.cz/~jachym/programs/grass/r.bilateral.tgz r.bilateral] Bilateral filter is an edge-preserving filter, which combines domain and range filtering. It is written in C language. '''Author:''' Jachym Cepicky

* [http://www.fle.czu.cz/~jachym/programs/zc.pl Zero crossing] is a simple Perl script, finds the ,,zero crossings`` from the Laplacian of Gaussian filter (see above). It is really very simple, the edges don't need to be really on that pixel, where they are detected, no interpolation is performed. '''Author:''' Jachym Cepicky

'''Usage:'''
zc.pl -i input -o output |r.mapcalc

* [http://www.fle.czu.cz/~jachym/programs/local_max.pl Local maxima] is a Perl script for <code>r.mapcalc</code>. It detects local maxima of the image. '''Author:''' Jachym Cepicky

'''Usage:'''
local_maxima.pl -i input -o output -s matrix_size|r.mapcalc

* [http://bambi.otago.ac.nz/hamish/grass/r.out.gmt r.out.gmt] is a GRASS script for exporting a GRASS raster map into a [[http://www.soest.hawaii.edu/gmt/ GMT]] grid file. It also creates a GMT color table from the data and can generate some GMT commands for plotting a postscript file. (code is experimental, but functional) see also http://169.237.35.250/~dylan/grass_user_group/#GMT_and_GRASS-overview '''Authors:''' Hamish Bowman, Dylan Beaudette

* [http://bambi.otago.ac.nz/hamish/grass/r.pack r.pack] and [http://bambi.otago.ac.nz/hamish/grass/r.unpack r.unpack] are two GRASS scripts for transfering raster maps to another computer as a single file. '''Author:''' Hamish Bowman

* [http://bambi.otago.ac.nz/hamish/grass/dominant_dir.m dominant_dir.m] and [http://bambi.otago.ac.nz/hamish/grass/calc_terraflow_dir.m calc_terraflow_dir.m] are two Matlab scripts for determining the dominant flow direction from a r.terraflow MFD map and converting into a GRASS aspect map for use with d.rast.arrow, etc. '''Author:''' Hamish Bowman

* [http://www-pool.math.tu-berlin.de/~soeren/grass/modules/ r.in.onearth] for download and import satellite images direct from the NASA onearth WMS server into GRASS. '''Author:''' Soeren Gebbert

* [http://www.shockfamily.net/cedric/grass/r.tileset r.tileset] generates a list of tiles and sizes in a source projection that cover the region in the current database with appropriate resolution. The size of individual tiles can be constrained. Only tiles intersecting the current region are returned. These tilings are appropriate for requesting data from another projection to meet the specifications of the current region. For example, it could be used to generate tile requests to a latitude / longitude WMS server like this <code>r.tileset -w sourceproj="+init=epsg:4326"</code>. '''Author:''' Cedric Shock

* [ftp://gsca.nrcan.gc.ca/outgoing/Patton/Grass/r.csr.tar.gz r.csr] integrates several Grass programs to produce colored, shaded-relief rasters in one step. Accepts single or multiple elevation/bathymetry maps as input; optionally will fill data holidays with 3x3 median filter, multiple times, if required; can apply color maps from a) input raster, b) another raster in MAPSET, or c) from a rules file; otherwise, rainbow colorbar is applied. Output colored, shaded-relief rasters can optionally be exported to tiff format and archived using tar with gzip/bzip2 compression if appropriate flags are given. Shading parameters can be modified, though useful defaults are given. '''Author:''' Eric Patton

* [ftp://gsca.nrcan.gc.ca/outgoing/Patton/Grass/r.fragment.tar.gz r.fragment] fragments a raster into a user-defined set of smaller tiles according to an input number of rows and columns. Optionally, a null value threshold can be set to filter out candidate tiles that would have a large percentage of null cells. '''Author:''' Eric Patton

* [http://david.p.finlayson.googlepages.com/r.eucdist r.eucdist] creates a raster map estimating the euclidean distance from known cells. '''Author:''' David Finlayson

* [http://david.p.finlayson.googlepages.com/r.smoothpatch r.smoothpatch] creates a composite of two rasters using a distance-weighted average across the transition to smooth the edges. '''Author:''' David Finlayson

* [http://www.faunalia.it/download/r_li/ r.li] is meant to be a more flexible and faster replacement of the old r.le. Currently under development. '''Authors:''' Claudio Porta, Davide Spano, Serena Pallecchi, [http://www.faunalia.it Faunalia]

* [http://www.biol.uni.wroc.pl/sieczka/udostepnione/grass_scripts/r.surf.nnbathy.tar.gz r.surf.nnbathy] interpolates surface from rasterized input using [http://www.marine.csiro.au/~sakov/ nn] natural neighbor intepolation library. '''Author:''' Maciej Sieczka

* [http://www.star.ait.ac.th/~yann/6s/i.atcorr.1.3.1a.tar.gz i.atcorr] Atmospheric Correction using Christo Zietsman's implementation of 6s code in C/C++. The Old Page was rescued by Christo recently and copied [http://www.star.ait.ac.th/~yann/6s/ here]. Compiled in CVS but not tested. '''Author:''' Christo Zietsman

===General add-ons===

* [http://www.gdf-hannover.de/dassau/g.laptop/g.laptop.sh g.laptop.sh] is an interactive shell script to extract raster and vector data from current Location into a new one. Data can be copied or extracted in current or original resolution and region extend. This script was written to extract smaller parts of a GRASS location to be able to present them on a laptop without the necessity to transfer huge data. Maps do not have to be in the same mapset. '''Author:''' Otto Dassau

* '''''Readline completion''''' for GRASS commands under the bash shell: [http://www.sorokine.info/grass-complete/ grass-complete] won't clutter the environment but needs to be installed; [http://dcalvelo.free.fr/grass/grass_rlcompleter.sh grass_rlcompleter.sh] needs almost no installation but will pollute the environment. Grass-Complete currently requires Bash version 2.05 for proper install. '''Author:''' Alexandre Sorokine (grass-complete), Daniel Calvelo (grass_rlcompleter.sh)

=== Display add-ons ===

==== [[IconSymbols]] ====
* [[IconSymbols|Symbols]] which can be used with ''d.vect, d.graph'', and ''ps.map''.

* [http://bambi.otago.ac.nz/hamish/grass/d.frame.quarter d.frame.quarter] is a shell script that will split the display into four quadrants using ''d.frame''. Individual frames are named ''uno, dos, tres, cuatro'', and ''full_screen''. '''Author:''' Hamish Bowman

* [ftp://gsca.nrcan.gc.ca/outgoing/Patton/Grass/d.hyperlink.tar.gz d.hyperlink] is an interactive shell script that allows the viewing of hyperlinked images from a vector's attribute table in an external image viewer. Queries can be made via SQL statements or interactive mouse-clicking. The attribute table must be pre-populated with a column containing the image to link the vector to; the user also specifies the image folder in the current MAPSET where the images are located. The script currently supports gimp, Eye of Gnome, gthumb, gpdf, and Inkscape image viewers. '''Author: '''Eric Patton

* [http://bambi.otago.ac.nz/hamish/grass/d.stations d.stations] is a shell script that quickly displays vector points (or sites for GRASS 5.4 and below). '''Author:''' Hamish Bowman

* [http://bambi.otago.ac.nz/hamish/grass/d.varea d.varea] is a shell script that quickly displays vector areas. '''Author:''' Hamish Bowman

===Postscript add-ons===

* [http://les-ejk.cz/programs/grass/ps.atlas ps.atlas] is a shell script that makes more maps on current region according to input *.psmap file. General map can be stored as vector file. The resulting *.eps maps can be automatically converted to *.pdf files. '''Author:''' Jachym Cepicky

* [[ps.map scripts|ps.map samples/templates]]

==== [[AreaFillPatterns]] ====
* Hatches for ps.map's vareas

===GRASS and UMN Mapserver===

* [http://www.mail-archive.com/mapserver-users@lists.umn.edu/msg00086.html See interesting posting]

[[Category:Community]]
[[Category:Development]]
[[Category:Documentation]]
[[Category:Installation]]

GRASS in the wild

2006-07-19T15:58:19Z

⚠️Guano: added article grohmann+etal2006

<pre>

@Article{grohmann+etal2006,
author = {C. H. Grohmann, C. Riccomini, F. M. Alves},
title = {SRTM-based morphotectonic analysis of the Po\c cos de Caldas Alkaline Massif, southeastern Brazil},
journal = {Computers and Geosciences (in press)},
year = {2006},
volume = {},
number = {},
pages = {},
month = {}
note = {ISSN 0098-3004}
link = {http://dx.doi.org/10.1016/j.cageo.2006.05.002}
}

@Article{grohmann2005,
author = {C. H. Grohmann },
title = {Trend-surface analysis of morphometric parameters: A case study in southeastern Brazil},
journal = {Computers and Geosciences},
year = {2005},
volume = {31},
number = {8},
pages = {1007-1014},
month = {October}
note = {ISSN 0098-3004}
link = {http://dx.doi.org/10.1016/j.cageo.2005.02.011}
}

@Article{grohmann2004,
author = {C.H. Grohmann },
title = {Morphometric analysis in geographic information systems; applications of free software GRASS and R},
journal = {Computers and Geosciences},
year = {2004},
volume = {30},
number = {9-10},
pages = {1055-1067},
month = {November}
note = {ISSN 0098-3004}
link = {http://dx.doi.org/10.1016/j.cageo.2004.08.002}
}

</pre>

User:Guano

2006-05-31T16:01:30Z

⚠️Guano: about

If you want to know a little more about me, please take a look at

http://www.igc.usp.br/pessoais/guano/

See ya!

GRASS in the wild

2006-05-29T14:11:34Z

⚠️Guano:

<pre>

@Article{grohmann2004,
author = {C.H. Grohmann },
title = {Morphometric analysis in geographic information systems; applications of free software GRASS and R},
journal = {Computers and Geosciences},
year = {2004},
volume = {30},
number = {9-10},
pages = {1055-1067},
month = {November}
note = {ISSN 0098-3004}
link = {http://dx.doi.org/10.1016/j.cageo.2004.08.002}
}

@Article{grohmann2005,
author = {C.H. Grohmann },
title = {Trend-surface analysis of morphometric parameters: A case study in southeastern Brazil},
journal = {Computers and Geosciences},
year = {2005},
volume = {31},
number = {8},
pages = {1007-1014},
month = {October}
note = {ISSN 0098-3004}
link = {http://dx.doi.org/10.1016/j.cageo.2005.02.011}
}

</pre>

GRASS in the wild

2006-05-29T14:10:04Z

⚠️Guano:

@Article{grohmann2004,
author = {C.H. Grohmann },
title = {Morphometric analysis in geographic information systems; applications of free software GRASS and R},
journal = {Computers and Geosciences},
year = {2004},
volume = {30},
number = {9-10},
pages = {1055-1067},
month = {November}
note = {ISSN 0098-3004}
link = {http://dx.doi.org/10.1016/j.cageo.2004.08.002}
}

@Article{grohmann2005,
author = {C.H. Grohmann },
title = {Trend-surface analysis of morphometric parameters: A case study in southeastern Brazil},
journal = {Computers and Geosciences},
year = {2005},
volume = {31},
number = {8},
pages = {1007-1014},
month = {October}
note = {ISSN 0098-3004}
link = {http://dx.doi.org/10.1016/j.cageo.2005.02.011}
}