[GRASS-dev] [GRASS GIS] #1977: r.random.cells does not respect MASK

GRASS GIS trac at osgeo.org
Thu May 23 00:10:25 PDT 2013

#1977: r.random.cells does not respect MASK
 Reporter:  pvanbosgeo            |       Owner:  grass-dev@…              
     Type:  defect                |      Status:  new                      
 Priority:  normal                |   Milestone:  6.4.3                    
Component:  Raster                |     Version:  unspecified              
 Keywords:  r.random.cells, mask  |    Platform:  Unspecified              
      Cpu:  Unspecified           |  

Comment(by hamish):

 Works for me -- random cells are only created in the MASKed areas. the
 areas not covered by the MASK map are flood filled with "0". (use "r.null
 setnull=0" to clear that away)

 g.region rast=fields
 g.copy fields,MASK
 r.random.cells out=test.rrandcellsMASKed dist=500
 g.remove MASK

 ... and random points only occur in places covered by the MASK map.

 was your MASK map a CELL (integer) type?

 see also the v.random.cover addon module, which may do something like what
 you are looking for.


Ticket URL: <https://trac.osgeo.org/grass/ticket/1977#comment:1>
GRASS GIS <http://grass.osgeo.org>

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