r.slope.aspect

James Cameron cameron at stl.dec.com
Mon Feb 8 23:43:35 EST 1999


Agustin Lobo wrote:
> Why is r.slope.aspect giving aspect as degrees from East?
> Is not the standard degrees from N (terrain azimut)?

Perhaps because if you then use it in an aspect grey scale it looks
similar to viewing the land from above at sunrise?  You could not easily
imagine this if it was from the north.  The translation is surely
trivial using r.mapcalc.

-- 
James Cameron                                      (cameron at stl.dec.com)

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