I'm very new on GRASS and trying to extract the viewshed of a SRTM HGT file.
This is what I've done so far: (why I'm using GRASS command line this way is not in question. Please answer this same way)
grass --exec r.in.srtm -1 --overwrite input=S23W044.hgt grass --exec g.list type=raster grass --exec g.region raster=S23W044 -p grass --exec r.viewshed input=S23W044 output=S23W044-shed coordinates=-43.5,-22.5
But I can't find my output file and don't know it format.
GRASS GIS 7.5.svn