[gdal-dev] Gdal_grid with a mask layer?
jluis at ualg.pt
Thu Oct 6 04:10:16 PDT 2016
Jukka, if no gdal solution comes out, consider this
> 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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