[GRASSLIST:1534] Re: r.mapcalc usage

Eric G. Miller egm2 at jps.net
Wed Feb 28 02:18:10 EST 2001

On Wed, Feb 28, 2001 at 12:38:36PM +0600, Artemis wrote:
> Hi all,
> Can anyone tell me examples of
> r.mapcalc usage?
> I believe, it's a powerful tool
> for raster analysis, but can't
> figure out where to apply it.
> Thanks, Artemis

Check out the GRASS resources webpages.  There should be a whole
tutorial on using r.mapcalc (in PostScript format).  It's slightly dated
for GRASS 5.0, but the biggest change there is the separation of zero
and NULL and the addition of an isnull() function (mentioned in

It is a useful tool.

Eric G. Miller <egm2 at jps.net>

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