Hi List!
I often use the tool r.watershed and I always wonder that it seems to be not affected by the issue of flat areas . How it manages the surface flows in low/zero slope areas?
Thank you in advance.
Cheers
--
Eng. Margherita Di Leo
Ph.D. Candidate
Methods and Technologies for Environmental Monitoring
Department of Environmental Engineering and Physics (DIFA)
University of Basilicata Campus Macchia Romana
85100 - Potenza Italy
Office: +39-0971205363
Fax: +39-0971205160
On Thu, Mar 25, 2010 at 2:45 PM, Margherita Di Leo <diregola@gmail.com> wrote:
Hi List!
I often use the tool r.watershed and I always wonder that it seems to be not
affected by the issue of flat areas . How it manages the surface flows in
low/zero slope areas?
AFAIK it uses a least-cost algorithm (A^T search) to figure out the *best* way.
The man page contains a reference to Chuck Ehlschlaeger's document about
this method. Ah, I see that the link is now
http://chuck.ehlschlaeger.info/older/IGIS/paper.html
will update the manual page.
Markus