[GRASS-dev] [GRASS GIS] #1938: r.fillnulls: per hole filling speed-up

GRASS GIS trac at osgeo.org
Tue Jul 1 15:48:27 PDT 2014

#1938: r.fillnulls: per hole filling speed-up
  Reporter:  sbl          |       Owner:  grass-dev@…              
      Type:  enhancement  |      Status:  reopened                 
  Priority:  normal       |   Milestone:  7.1.0                    
 Component:  Python       |     Version:  svn-trunk                
Resolution:               |    Keywords:  r.fillnulls              
  Platform:  All          |         Cpu:  All                      
Changes (by sbl):

  * status:  closed => reopened
  * component:  Shell Scripts => Python
  * platform:  Unspecified => All
  * milestone:  7.0.0 => 7.1.0
  * resolution:  fixed =>
  * cpu:  Unspecified => All


 Please find attached another proposal for speed-up of rst-interpolation by

 In the diff, there are two sections which can probably be removed in

 1) The new r.clump version should account for NoData, so the following
 r.mapcalc operation can be removed (could not test it since I work with an
 older version).

 2) I was unsure if r.patch has a limit regarding the number of open maps,
 if not  than block-wise application of r.patch can be removed too...

 Maybe better to use bilinear or bicubic interpolation as default as it is
 significant faster (and simpler) than rst?

Ticket URL: <http://trac.osgeo.org/grass/ticket/1938#comment:2>
GRASS GIS <http://grass.osgeo.org>

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