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On 03/23/2012 08:31 PM, Rich Shepard wrote:
<blockquote
cite="mid:alpine.LNX.2.00.1203231126560.16792@salmo.appl-ecosys.com"
type="cite">On Fri, 23 Mar 2012, Daniel Lee wrote:
<br>
<br>
<br>
<blockquote type="cite">... 235° would be ... from the southwest.
<br>
</blockquote>
<br>
Yep. That's the way it usually works.
<br>
<br>
</blockquote>
<br>
It's just an optical illusion. Rotate the PDF 90 deg to the right,
and it looks "right". I usually choose azimuth=315 for
r.shaded.relief. When the sun is from the NW, shadows appear "below"
the features, and we visualize mountains as raised and valleys as
lower.<br>
<br>
HTH,<br>
Micha<br>
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