[GRASS-user] r.mapcalc problem ?

[Nikos Alexandris]

Juan CT:
> > 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

Glynn C:
> Or use "d.rast -n ...", which will draw null cells.

Ehm... where is this flag (-n) ? In grass70?
Thanks, Nikos