> I tried this again: > > Approach 1: r.mapcalc > > r.mapcalc "cut=if(boundary_raster, large_map, > null())" > > Approach 2: r.resample > > r.resample input=large_map output=cut > > I notice the that using Approach 2, the areas that was outside the set > region is white. The underlayung rasters are not visible (or only if I > set the opacity of "cut" to a low value). > If I use Approach 1 with r.mapcalc, the areas outside the region are > really NULL() (=transparent) and underlaying larger rasters are visible. > Only that the result "cut" from r.mapcalc has a new colortable. > some illustrations to my problem: Spearfish: soils cut on top of elevation
r.mapcalc result: http://img197.yfrog.com/i/cutmapcalc.png/ r.resample result: http://img197.yfrog.com/i/cutresample.png/ Regards, Timmie _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
