Hello users and Laura,
I'm trying to use the GRASS command r.terraflow to get flow direction and flow accumulation, graphically it seems to do a great work, comparing to r.watershed but how do I read the maps?
* running the command with or without the flag -s (with SFD or MFD)
the produced map is the same (no difference with r.mapcalc)... is
it correct?
* the value are in the range 0-255, does it indicate the direction
of the slopest path? why it is in 256 values and not in 360
degrees? How to compute degrees?
* how flow accumulation is computed?
Thanks a lot.
Maxi
--
-------------
note: change my e-mail reference to massimiliano.cannata@supsi.ch
because the old one will be deleted soon.
-------------
Ing. Massimiliano Cannata
Istituto di Scienze della Terra - SUPSI
C.P. 72 - CH-6952 Canobbio (Ticino, Switzerland)
Tel +41 91 /935 12 25 - Fax +41 91 /935 12 09
eMail: massimiliano.cannata@supsi.ch
Internet: http://www.ist.supsi.ch