[Qgis-user] Adding GRASS add-ons into Processing toolbox

[Luis Miguel Royo Pérez]

Hi everyone,

I've installed in GRASS 6.4.3 a couple of extensions (r.viewshed and 
r.viewshed.cva), and now I would like use them in QGIS processor. I've 
search documentation about it but I haven't found anything that solve my 
doubts. Can anyone lead me to the correct way?

I know this algorithm is in GRASS 7, but the compatibility is not 
guaranteed with earlier versions, so I prefer don't install it.

Thank you!!