[GRASS-user] forcing raster accept only integer >0

Glynn Clements glynn at gclements.plus.com
Fri Jan 22 00:17:22 EST 2010

Milton Cezar Ribeiro wrote:

> I am trying to work around with a problem of map size under Vista (>2G).
> I was wondering if I use the command below I will get a raster
> map with values integer and >=0.
>     r.mapcalc "Dem.new=if(Dem>=0,int(Dem),null())"

That will produce an integer map with no negative values.

> As my original map have values positive and negative, as well as
> it is fload, my question is if are there a way of I force my output
> map accept only integers>=0. By the way, is there a way
> of I know if a map is float or integer?

r.info, or "r.info -t" if you only want the type.

Glynn Clements <glynn at gclements.plus.com>

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