[GRASS-user] Aspect direction in r.slope.aspect

[Moskovitz, Bob]

Hello Grass Users,
 
I was just wondering why aspect is measured from the east and increased counterclockwise instead of the north and clockwise?  It seems to run counter to what is done in other GISs.
 
Bob
 

Bob Moskovitz 
Research Analyst I 
Seismic Hazard Zonation Project
California Geological Survey 
http://www.conservation.ca.gov/cgs/shzp<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

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