It is just a way to assign a unique value to each pixels of the raster. To create a fake raster not having a unique value like what ST_AddBand do.
Pierre > Can I query what the '([rast.x] - 1) * 10 + [rast.y]') section of the > equation is? > I can't seem to understand what it does. > > James _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
