[GRASS-user] Re: null to equal zero

Gary Nobles garynobles at yahoo.com
Thu Mar 18 05:17:34 EDT 2010

>r.mapcalc "result=if( isnull(map),0,map)" 

I have a raster of bird bones Bones_AVE

r.mapcalc "result=if( isnull(Bones_AVE),0,outputmap)" 

Is that right, no need for A=Bones_AVE?
could the output map be the original? Or does it have to be a new raster?

Thank you for clarifying
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