id summary reporter owner description type status priority milestone component version resolution keywords cc cpu platform 3547 r.viewshed.cva with -e flag micha grass-dev@… "When passing the '-e' flag to r.viewshed.cva, each of the individual, single viewpoint maps gets a value of ""invisible = NULL, else current elev-viewpoint_elev"". However when the maps are combined using r.series, the result is a count of the maps. So invisible pixels get a value of 0, instead of NULL. I suggest to use the r.series method=minimum when the '-e' flag is passed so as to keep the elevation difference in the cumulative viewshed output. Diff attached." enhancement new minor 7.8.3 Addons unspecified r.viewshed.cva Unspecified All