[GRASS-dev] r.watershed question

[Michael Barton]

r.watershed can produce a map of "drainage directions".

The values of a direction map are in the range of -8 - +8

Can someone tell me what these numbers refer to? That is, what  
direction is 3 or -3? I've tried to run some correlations against an  
aspect map and am not getting meaningful results yet.

Thanks
Michael


____________________
C. Michael Barton
Director, Center for Social Dynamics & Complexity
Professor of Anthropology, School of Human Evolution & Social Change
Arizona State University

Phone: 480-965-6262
Fax: 480-965-7671
www: www.public.asu.edu/~cmbarton, http://csdc.asu.edu