Markus Neteler wrote: > >> >> Null support is missing (r.external records any null value reported by > >> >> GDAL, but G_get_raster_row() etc ignore it; I suspect that it will > >> >> treat zero as null due to the absence of a null file). > >> > > >> > Null support has been added. > >> > >> I have now tested (in my local 6.4 backport) a shaded terrain map > >> (GeoTIFF). > >> The 0 pixels are registered as NULL pixels, leading to white areas instead > >> of black in case of cast terrain shadow. > >> > >> So I confirm that zero is treated as NULL now. > >> Could the GDAL Null value be used instead? > > > > Null support was added in r32924, and seems to work. > > Ha - I missed to backport this one. > > Excellent, it now works fine in my local backport, too. > > So: any objections to submit this new feature/module?
Is it really wise to include it in 6.4? At a minimum, we should probably add some more checks so that versions built without this feature fail more gracefully (i.e. produce a more useful error message). -- Glynn Clements <[EMAIL PROTECTED]> _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
