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Hello users and Laura,<br>
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?<br>
<ul>
<li>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?<br>
</li>
<li>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?<br>
</li>
<li>how flow accumulation is computed?</li>
</ul>
Thanks a lot.<br>
Maxi<br>
<br>
<pre class="moz-signature" cols="50">--
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note: change my e-mail reference to <a class="moz-txt-link-abbreviated" href="mailto:massimiliano.cannata@supsi.ch">massimiliano.cannata@supsi.ch</a>
because the old one will be deleted soon.
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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: <a class="moz-txt-link-abbreviated" href="mailto:massimiliano.cannata@supsi.ch">massimiliano.cannata@supsi.ch</a>
Internet: <a class="moz-txt-link-freetext" href="http://www.ist.supsi.ch">http://www.ist.supsi.ch</a>
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