[GRASS-dev] Re: [GRASS GIS] #1220: Error when creating vector(areas) from raster

[GRASS GIS]

#1220: Error when creating vector(areas) from raster
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  Reporter:  toyzerocha1980  |       Owner:  grass-dev@…                
      Type:  defect          |      Status:  closed                     
  Priority:  major           |   Milestone:  6.4.1                      
 Component:  Vector          |     Version:                             
Resolution:  wontfix         |    Keywords:  wingrass, memory, r.to.vect
  Platform:  MSWindows XP    |         Cpu:  x86-32                     
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Changes (by hamish):

  * keywords:  wingrass => wingrass, memory, r.to.vect
  * status:  new => closed
  * resolution:  => wontfix


Comment:

 closing the ticket as "wontfix" (aka can't fix), if you want to work with
 huge datasets the solutions seem to be installing more RAM and/or a more
 capable 64bit OS.

 building topology in GRASS 6.4 is going to get memory hungry and with
 32bit WinXP there's a hard RAM limit that we can't do much about.

 you can try to use the `r.to.vect -b` flag to skip building topology, but
 that's mostly useful for point data, not areas.

 you can also try running the module on a smaller raster region, then
 `v.patch` the results back together and dissolve out any seam boundary
 lines.


 Hamish

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Ticket URL: <https://trac.osgeo.org/grass/ticket/1220#comment:8>
GRASS GIS <http://grass.osgeo.org>