I would like to install the GRASS GIS addon r.pi within QGIS,
I only have access to basic GRASS commands
I installed QGIS using the osgeo4w-setup-x86_64.exe advanced installation using the http://osgeo4w-oslandia.com
Downloadsite and I installed GRASS GIS 7.4.1 where I was able to install four r.pi commands (r.pi.cor.mw, r.pi.grow, r.pi.lm, r.pi.rectangle) using following command:
g.extension extension=r.pi -s
but I need to compile the r.pi.prox (Calculation of Proximity and Modified Proximity Index for patches in buffer region).
g.extension extension=r.pi.prox -s
ERROR: Extension not found
And I don't know how to implement the extensions (Addons) in QGIS.