[GRASS-user] Clipping Very Large Vector Map

Rich Shepard rshepard at appl-ecosys.com
Mon Oct 8 16:28:34 PDT 2012

   I have a map of streams and rivers that is about 474M for the coor file
and 65M for the topo file; very large. The area of interest is very much
smaller and I tried using v.overlay with the 'and' (intersect) operator to
clip the huge line map with the small area map. After about 1/2-hour of
processing the system shut down because the CPU overheated (at it's only 20C
here today).

   Are there other modules, or ways of using v.overlay, that will allow me to
trim off smaller chunks of the line file?



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