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<body lang="FI" link="#0563C1" vlink="#954F72"><div>Jukka, if no gdal solution comes out, consider this</div><div><br></div><div>http://gmt.soest.hawaii.edu/doc/latest/grdmask.html<br></div><div><br></div><div>Joaquim</div><br><blockquote style="margin: 0 0 0.80ex; border-left: #0000FF 2px solid; padding-left: 1ex">
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<p class="MsoNormal"><span lang="EN-US">Hi,</span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I have depth data from a lake as scattered points and I would like to convert them into raster DEM. Unfortunately this lake is not a rectangular, north oriented one but it has a curvy shoreline and lots of islands. In
my first trials the resulting DEM leaks away from the water to the dry ground. I guess that some other algorithms than the invdist would give better results near the shoreline. Generating fake zero depth points on the ground area would probably help with all
the algorithms. However, what I would like to do is to define a mask layer for telling the valid area for the DEM that will be generated. Is that possible somehow? If it is not then other good tricks are welcome. The good result should have zero depth on
the ground and sharp shoreline at correct place.</span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">-Jukka Rahkonen-</span></p>
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