Rich Shepard wrote:<br><br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
I need the compass direction (azimuth) of the main channels in identified<br>
sub-basins delineated by r.basin. I've looked at the list of vector and<br>
raster modules (both regular and add-on) without seeing one that will<br>
provide this output.<br>
<br>
Is there a module that can take a basin's mainchannel map and identify the<br>
compass direction in which it flows?</blockquote></div><br>Rich, maybe it's too late, but you may try my script <v.ldm> (<a href="http://grasswiki.osgeo.org/wiki/AddOns/GRASS_6#v.ldm">http://grasswiki.osgeo.org/wiki/AddOns/GRASS_6#v.ldm</a>) to compute "Linear Directional Mean" of vector lines. <br>