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

[GRASS GIS]

#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


Comment:

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

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

 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>