[GRASS-dev] Re: [GRASS GIS] #789: g.region option to expand the computational region of about "some" pixels?

GRASS GIS trac at osgeo.org
Wed Oct 14 23:12:16 EDT 2009


#789: g.region option to expand the computational region of about "some" pixels?
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  Reporter:  nikos        |       Owner:  grass-dev at lists.osgeo.org            
      Type:  enhancement  |      Status:  new                                  
  Priority:  normal       |   Milestone:  7.0.0                                
 Component:  default      |     Version:  unspecified                          
Resolution:               |    Keywords:  g.region, expand computational region
  Platform:  Unspecified  |         Cpu:  Unspecified                          
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Comment (by hamish):

 did you try the g.region align=rastermap option?

 fwiw, -a grows outwards.

 > Matching the region over a point map is the problem! The
 > points at the borders (happens quite often to me when the
 > resolution of the raster map is low and so does the
 > resolution of the region successively) are not taken
 > into account.

 could you explain that more? I don't understand it.

 can you provide an example using Spearfish's bugsites + elevation.dem or
 something from the NC standard dataset?


 fwiw the region growing I've done has always been for cosmetic reasons. in
 those cases usually make the res=res*2 (or 10) with the -a flag, then run
 g.region again with the original region value.


 Hamish

-- 
Ticket URL: <https://trac.osgeo.org/grass/ticket/789#comment:1>
GRASS GIS <http://grass.osgeo.org>


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