[GRASS-user] r.mapcalc problem ?

Glynn Clements glynn at gclements.plus.com
Thu Jul 2 17:56:19 EDT 2009

Juan Carlos Torres wrote:

> I think that your second command is correct. That is
> r.mapcalc 'test = if(mydem < 0.0000,mydem,null())'
> Probably your problem is that your are drawing the new map on top of the 
> older one.
> Just try to erase the monitor before drawing

Or use "d.rast -n ...", which will draw null cells.

Glynn Clements <glynn at gclements.plus.com>

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