[GRASS-user] inverting DEMs

[Daniel Victoria]

Multiply the DEM by -1

In r.mapcalc do:
dem_inv = dem * -1



On Sat, Nov 21, 2009 at 12:01 PM, Bulent Arikan <bulent.arikan at gmail.com> wrote:
>
> Hi,
> I am trying to invert a DEM (i.e., make peaks basins and vice versa) but
> there does not seem to be a module for this. I am assuming this can be done
> through ' r.mapcalc ' which I have very limited experience.
>
> I also want to get ' r.prominence ' from the Add-ons site but the
> text file is not downloadable. Should I copy and paste to create a text
> file that contains the script?
>
> Thank you for all the suggestions,
>
> --
> BÜLENT ARIKAN
> School of Human Evolution and Social Change
> Arizona State University
> Tempe - AZ
> 85287-2402
>
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