id summary reporter owner description type status priority milestone component version resolution keywords cc 3776 [raster] ST_DumpAsPolygons() stop differenciate values when they are higher than 1048576 pracine Bborie Park "This works fine: SELECT (ST_DumpAsPolygons(ST_SetValue(ST_AddBand(ST_MakeEmptyRaster(1, 2, 0, 0, 1), '32BUI'::text, 1048575), 1, 1, 1048576))).* rast returning two polygons, but this fails: SELECT (ST_DumpAsPolygons(ST_SetValue(ST_AddBand(ST_MakeEmptyRaster(1, 2, 0, 0, 1), '32BUI'::text, 1048576), 1, 1, 1048577))).* rast The only difference is when the pixel values get over 1048576 (which is 0x100000 by the way)." defect new medium PostGIS GDAL raster 2.3.x raster