> > "The mask is just 0 and 1’s" > you must use null and non null >
Or maybe try with "maskcats=1" as an aditional parameter on the r.mask command, in any case you can do this: r.mapcalc exp="MASK = if(MASK == 0, null(), 1)" -- *César Augusto Ramírez Franco* Laboratorio de Sistemas Complejos Naturales Escuela de Geociencias Facultad de Ciencias Universidad Nacional de Colombia - Sede Medellín Teléfono: (57-4) 430 9369 - 30 0 459 6085
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