Can someone help me to install an add-on for GRASS 6.4.3RC3, on Windows 7? I tried several approaches, but wasn't able to install the add-on. I found several topics here and on the web but the approach doesn't work.

Using g.extension, I install r.basin and it seems that everything is OK, but when I try to use r.basin it doesn't exist.

  • Can you provide us some more information - like any error messages etc.? Between there is a similar question which might help you - How to install add-ons in GRASS?
    – Chethan S.
    Jun 2, 2013 at 10:17
  • I tried to install r.basin via g.extension on my Windows7 machine, but although it said "Successfully installed", I'm not able to see the module and start it!
    – mattrx86
    Jun 2, 2013 at 14:01
  • If you have not done this already, I would suggest you read this tutorial for r.basin. You may have to convert your data to projected coordinates for the module to work.
    – Chethan S.
    Jun 2, 2013 at 14:46

1 Answer 1


Please enter "r.basin" (without the quotes) in the Command Console tab to see if it is there. In GRASS GIS 7 the addons should be automatically registered in the menu (maybe not the case in GRASS 6).

According to http://grass.osgeo.org/download/addons/ the binaries for r.basin are correctly generated and available.

  • oK, I will try. Maybe I can try also to istall grass 7. But I'm wondering if the problem could be the windows machine.
    – mattrx86
    Jun 3, 2013 at 5:34
  • If I try to do g.extension from command console it appears that I need subversion...
    – mattrx86
    Jun 3, 2013 at 5:35
  • .. then something went wrong. On Windows, simply precompiled binaries should be downloaded (subversion is used in case of Unix-like operating systems). The latest winGRASS7 contains also proxy support for the extension manager.
    – markusN
    Jun 3, 2013 at 19:07
  • I noticed that, for grass 6.4.3RC3, the problem appear with phyton scripts addons (like r.basin). While with addon as r.viewshed it's easy to import it from wingrass.fsv.cvut.cz/grass64/addons. Any suggestion??
    – mattrx86
    Jun 4, 2013 at 5:47
  • Perhaps contact the author... I have no idea and the file structure looks the same. In any case, since it is a script, it is sufficient to copy it, no compilation needed.
    – markusN
    Jun 4, 2013 at 12:07

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