On 23/09/16 20:51, Rich Shepard wrote:
On Fri, 23 Sep 2016, Markus Metz wrote:
Apparently there are less than 52 MB of free memory left. The resulting
vector contours must be quite large. Try to export GRASS_VECTOR_LOWMEM=1
before running r.contour.
Maybe also use a larger step or less levels.
Took a different approach by reducing the size of the source DEMs (which
cover a very large area compared to the area of interest).
Using v.to.rast I converted the project boundary vector to a raster file,
then made it into a mask with r.mask. The mask then limited the area of the
source DEMs with g.copy.
FYI: Since GRASS 7 r.mask actually has a vector= parameter which allows
setting the mask directly from a vector map.
Now re-running r.contour on the bare earth DEM; it should easily fit into
the 4G RAM on this host.
Thanks, Markus,
Rich
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