Nikos: > > Try this: > > r.mapcalc river="if(river==$old, $new, null())"
Glynn: > Note that this won't work in 7.0, where r.mapcalc uses the parser. It > will complain that r.mapcalc doesn't have a river=... option. > For portability, always: > 1. quote the entire expression, and > 2. insert a space before the first = sign, e.g.: > r.mapcalc "river = if(river==$old, $new, null())" > This will work with all versions of r.mapcalc. Thanks Glynn. I assume the above tips are valid for "normal" r.mapcalc use, that is not within from a script. Having a space before the 1st = sign is in addition more clear/easy to read when it comes to lots and long r.mapcalc one-liners, one after another. Kind regards, Nikos _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
