Hello, I am trying to run r.los using a mask. My work flow is as follows:
1. Draw a vector polygon boundary around the area for which I want to run r.los. 2. Convert the polygon to a raster mask with a category value of 1 inside the poloygon: v.to.rast in=viewshed_mask_bnds out=viewshed_mask use=val value=1 3. Use the raster mask to generate a viewshed: r.los input=project_dem output=viewshed coordinate=313347,3643638 obs_elev=1.75 max_dist=10000 patt_map=viewshed_mask After r.los finishes processing, I am left with a viewshed that covers the entire current region - it extends well outside the boundaries of the mask... Not sure what I'm doing wrong.... Thanks, William _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
