On Thu, 8 Jun 2017, Rich Shepard wrote: > r.mapcalc 'output1 = if (mapname at mapset,value = 0.0)' Tried it this evening: r.mapcalc does not like this syntax. I can create a map with values specified, but they are the size of the mask. How can I specify a specific map name to r.mapcalc? Rich