Hola Hernán, Do your polygons have repeated/shared cat values? That might be one potential cause according to the Notes in the manual: https://grass.osgeo.org/grass83/manuals/v.rast.stats.html
just my 2 cents Vero El mar, 31 oct 2023 a las 6:35, Hernán De Angelis via grass-user (< grass-user@lists.osgeo.org>) escribió: > Hi all, > > I have a vector layer with 97015 polygons (lakes in real life) many of > which are complicated, with islands. The layer has been cleaned using > v.clean (during import, and after as well). I then run v.stats.rast to > pick statistics from a raster. This works well for about 3/4 of the > categories while about 1/4 are skipped. Why? > > From v.stats.rast: > WARNING: Not all vector categories converted to raster. Converted 73078 of > 97837. > Processing input data (73078 categories)... > > I see that v.to.rast has no problems converting polygons to raster (only > visually checked). A test running v.rast.stats using the rasterized > vector reports: > WARNING: Not all vector categories converted to raster. Converted 97015 of > 97837. > Processing input data (97015 categories)... > That is, it converts all polygons. > > I have cleaned, and rebuilt topology to no avail. Also calling > v.rast.stats using layer (1) and type (centroid) did not change the > results. > > Am I missing something here? Why is this happening and what can be done > to calculate raster statistics for all polygons? > > Thanks in advance! > > Hernán > > > v.category report is: > > v.category input=lakes option=report > Layer/table: 1/lakes > type count min max > point 0 0 0 > line 0 0 0 > boundary 0 0 0 > centroid 97837 1 97015 > area 0 0 0 > face 0 0 0 > kernel 0 0 0 > all 97837 1 97015 > Layer: 2 > type count min max > point 0 0 0 > line 0 0 0 > boundary 0 0 0 > centroid 21 2 2 > area 0 0 0 > face 0 0 0 > kernel 0 0 0 > all 21 2 2 > > > _______________________________________________ > grass-user mailing list > grass-user@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/grass-user >
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