Ci riprovo. Non riesco a lanciare i comandi Grass da Qgis.
Ho disinstallato Qgis 2.18.2, pulito con Ccleaner, eliminato i file di qgis in giro e reinstallato da locale qgis 2.14.
Stesso errore. Provo a cambiare la directory, come da figura, ma stesso risultato
https://drive.google.com/open?id=0B5-BqO-DssYLejZvMW9BVGxHdGM
Lavoro aihmè, su win10, ma non dipende da me!!!.
Cosa devo fare???
Grazie
Federico
Sulla lista Qgis-user ho trovato queste risposte
"This also started happening to me after upgrading to 2.18.2.
If you open QGIS in the command line, then try to run a GRASS tool from Processing, you will probably see a message saying that it couldn’t find grass70.
Because you’re using ubuntugis-unstable, you probably have GRASS 7.2, so this should be the reason fro the error.
Switching from ubuntugis-unstable to ubuntugis-stable, which has GRASS 7.0, did the trick for me.
Not sure if there is another way to fix this while using ubuntugis-unstable / GRASS 7.2, without compiling QGIS from source.
Any ideas ?"
"More on the same:
After the recent GRASS update, the GRASS modules in Processing Toolbox no longer worked, giving the error “cannot find grass”. My work around is to set a softlink:
sudo ln -s /usr/bin/grass72 /usr/bin/grass70
Then the GRASS modules work.
There used to be a Processing configuration option to set the path for different modules. But that seems to be gone now?? So is Processing checking for the GRASS startup script hardcoded to /usr/bin/grass70? How can I change that?"