[GRASS-user] r.sunmask (position) and r.shaded.relief

[Markus Neteler]

On Tue, Feb 7, 2012 at 1:33 PM, Paolo Cavallini <cavallini at faunalia.it> wrote:
> Hi all.
> What is in short, the difference between the two commands?

They are completely different.

r.sunmask calculated the sun position for a given date-time,
optionally writing out
  a sun cast shadow map (not shaded!)

r.shaded.relief generates a shaded relief from a DEM to be used as
background for
  other maps.

Hope this helps,
Markus