[GRASS-dev] [GRASS GIS] #2036: Failed watershed analysis on Grass

[GRASS GIS]

#2036: Failed watershed analysis on Grass
--------------------------+-------------------------------------------------
  Reporter:  mehmeto      |       Owner:  grass-dev@…              
      Type:  defect       |      Status:  closed                   
  Priority:  normal       |   Milestone:  6.4.4                    
 Component:  Raster       |     Version:  6.4.2                    
Resolution:  fixed        |    Keywords:  LFS, r.watershed         
  Platform:  MSWindows 7  |         Cpu:  x86-64                   
--------------------------+-------------------------------------------------

Comment(by mmetz):

 Replying to [comment:14 mehmeto]:
 > Replying to [comment:11 mmetz]:
 >
 > > You need to run r.watershed in disk swap mode with the -m flag. Also
 be aware that even for smaller regions, the size of the temporary files
 can be quite large, and LFS for Windows is only available in GRASS 7.
 >
 > Thank you. So, I undertand that current stable version of Grass for
 Windows is not a convenient program to do such an analysis on a large map.
 I should either wait for Grass 7 release, or find a Linux / Mac machine or
 use another GIS?

 For Windows, you can use the GRASS 7 installer available at

 http://wingrass.fsv.cvut.cz/grass70/

 Most GRASS 7 modules are at least as robust as in GRASS 6, and r.watershed
 in GRASS 7 is suitable for production work. In GRASS 6.4.2, r.watershed is
 IMHO not suitable for production work.

-- 
Ticket URL: <http://trac.osgeo.org/grass/ticket/2036#comment:16>
GRASS GIS <http://grass.osgeo.org>