Jukka, if no gdal solution comes out, consider this
http://gmt.soest.hawaii.edu/doc/latest/grdmask.html
Joaquim
Hi,
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.
-Jukka Rahkonen-
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