[GIS] saga & grass configuration in sextante (ubuntu)

grassqgissagasextante

I have some trouble in running saga and grass algorithms in sextante. When I double click it appears a pop-up saying:

Missing dependency.This algorithm cannot be run 🙁
This algorithm requires SAGA to be run.Unfortunately, it seems that SAGA is not installed in your system, or it is not correctly configured to be used from QGIS
Click here to know more about how to install and configure SAGA to be used with SEXTANTE

I read the documentation, but i didn't understand what I have to do.

Best Answer

Isn't it obvious that you need to install SAGA first? If SAGA is installed check in SEXTANTE settings if it is activated. Install python-saga module. Also check out this post on setup SEXTANTE for Ubuntu.

If none of this helps the reason may be that SEXTANTE is looking for SAGA modules in the wrong directory. The default path to SAGA algorithms is /usr/lib/saga and many applications expect to find it there. So you may just create symbolic link to the installed modules (that are in /usr/lib64/saga for example, but you will need to provide the pass that is correct in your case):

:~> sudo ln -s /usr/lib64/saga /usr/lib/saga
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