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

Milton Cezar Ribeiro miltinho.astronauta at gmail.com
Fri Jan 22 00:38:48 EST 2010

Hi Glynn,

Thanks for the reply. By the way, where I can have access to
the list of datatypes for a raster map? I ran on my raster map
and got datatype=CELL. I was expecting to get byte,float,integer...


2010/1/22 Glynn Clements <glynn at gclements.plus.com>

> 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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