I want to perform a view shed analysis in QGIS using GRASS 7 r.viewshed.
When I double click on r.viewshed in GRASS GIS 7 commands in the processing toolbox of QGIS I get the following message:
Missing dependency.This algorithm cannot be run :-( This algorithm requires GRASS GIS 7 to be run. Unfortunately, it seems that GRASS GIS 7 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 GRASS GIS 7 to be used with QGIS
GRASS commands seem to work such as r.los but the GRASS 7 commands don't.
I am using a MAC OS X Mavericks with the latest version of QGIS 2.4.0 Chugiak.