GRASS SoC Ideas 2009

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Revision as of 09:31, 22 March 2009 by Cmbarton (talk | contribs) (wxGUI)

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2009 summer of code logo final r3-01.png


March 2009: This page is open to contributions - please edit!

This is the GRASS page for Google Summer of Code 2009. Here we will list project ideas and and other information related to the GRASS GSoC projects.


  OSGeo Flyer at
  Videos at
  More Flyers at


(GSoC timeline)

  • Community bonding time (getting to know the students)
  • Deadline for student's applications (April 3rd)
  • Accepted proposals announced (April 20th)
  • Work Begins (May 23th)
  • Midterm evaluation (July 6th-13th)
  • Pencils down! (August 10th-17th)

Required Steps

  • List ideas
  • Assign Mentors to Ideas
  • Notify OSGeo
  • Mentors evaluate student applications (Deadline April 3rd)
  • April 20st: Accepted students announced
  • Students subscribe to the grass-dev mailing list and introduce themselves
  • Create directory structure in the GRASS add-ons SVN for projects and setup access for students
    • Students must read and post agreement to RFC2 to the grass-psc mailing list to gain SVN access
    • Create a Wiki page for each accepted project, to be used as a progress reporting tool
  • Coding begins...
  • Students and mentors: Complete the Mid-term survey
  • Final commit and packaging for Google


  • Also review ideas from 2008 which are still open.
  • Project ideas of your own are also most welcome.


  • Reorganize the wxGUI layout to be more similar to QGIS and likeminded with all-in-one-frame interface. Essentially follow the Human interface guidelines mind your users (and where they come from!) and "Don't Limit Your User Base" by being too different from others. This could also be implemented as skin to give users choices to also get wxGUI as Multiple document interface (i.e, the wxGUI windows reside under a single parent window) . More here
  • Continue in wxNviz development.
  • Develop a graphical cartographic module - something like a GUI front-end or replacement for
  • Create a fully functional command line interface with history within the GUI
  • Develop a GUI module in wxPython for creating animations from multiple maps and saving animation outputs to animated GIF, MOV, or MPEG files.


  • implement OpenMP (multithreading) as much as possible


  • implement OpenMP multithreading) as much as possible
  • Rewrite to implement more spatial operators (currently only "overlap" is available) - see [1].
Probably merge with v.overlay.
--HB: I'm not so sure that a merge is justified; they perform two conceptually different tasks. A full-summer project would probably require more than this one task
  • Implement vector conflation to match vector networks from different sources (even rasterized streets from aerial/satellite imagery)
  • Further development of network analysis, modules for calculating new indicators such as degree, betweenness, etc, a module (see ticket 521, integration of time tables (train, public transport) into routing, etc.


  • GRASS's imagery modules (for satellite, scanned maps, and orthophotos) act as enhanced raster modules. In GRASS 5 and 6 they were mostly implimented using interactive X-monitors which are not available in MS Windows and so are removed in the new cross-platform code of GRASS 7.
    • We need someone willing to port the old modules to work with GRASS 7, including writing new wxPython GUI frontends to a number of existing tools and updating the imagery libraries to current raster library standards.
    • In addition, there are a number of improved/automated georectification tools which have not been merged into GRASS 5/6 which it would be nice to have updated and merged into the main code.
  • implement OpenMP multithreading) as much as possible

See the Ideas for imagery improvement and GRASS 7 ideas wiki pages for more details.

Guidelines for Students

How do you maximize your chances of getting picked? First read the Google SoC FAQ. Then talk to us about your idea. Try emailing our dev-mailing list, or come and talk to us in IRC (#grass). You can also reach the mentors directly by emailing:

  • Wolf Bergenheim (

Getting started with GRASS coding

  • The source code is maintained in a SVN server which is easy to browse
Please review the SUBMITTING files there for our coding standards.
See also the development section of the GRASS user's wiki

Accepted Ideas