<br><br><div class="gmail_quote">On Thu, Apr 19, 2012 at 6:26 PM, Rich Shepard <span dir="ltr"><<a href="mailto:rshepard@appl-ecosys.com">rshepard@appl-ecosys.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im">On Thu, 19 Apr 2012, Margherita Di Leo wrote:<br>
<br>
</div><div class="im"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
You can query the white cells and discover that they are null values. This<br>
is because r.watershed delineates only the basins that fall entirely into<br>
the computational region.<br>
</blockquote>
<br></div>
madi,<br>
<br>
I believe that the basin to the west of the large white one on the top<br>
also crosses the international boundary; </blockquote><div><br></div><div>Actually, I fear that nature doesn't really care about politic boundaries ;-)</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I'll check.<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
You didn't provide information about any mask, ...<br>
</blockquote>
<br>
No mask set.<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
... consider to provide at least a small buffer along the ridge line in<div class="im"><br>
order to allow the algorithm to work properly.<br>
</div></blockquote>
<br>
How do I do this?<br></blockquote><div><br></div><div>Just enlarge the computational region sufficiently over the expected boundary of the (sub)basin.</div><div><br></div><div>madi</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Thanks,<div class="HOEnZb"><div class="h5"><br>
<br>
Rich<br>
<br>
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</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br>Ing. Margherita Di Leo, Ph.D.<br>