[GRASS-dev] Re: [GRASS GIS] #1088: r.fillnulls: support other interpolation methods

[GRASS GIS]

#1088: r.fillnulls: support other interpolation methods
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 Reporter:  kyngchaos    |       Owner:  grass-dev@…              
     Type:  enhancement  |      Status:  new                      
 Priority:  normal       |   Milestone:  6.4.3                    
Component:  Raster       |     Version:  svn-develbranch6         
 Keywords:  r.fillnulls  |    Platform:  All                      
      Cpu:  All          |  
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Comment(by glynn):

 Replying to [comment:14 mmetz]:

 > PS: I fixed r.buffer in trunk, it could now be used (again) by
 r.fillnulls instead of r.grow.
 What was the problem? Because the fix is needlessly inefficient. The
 efficient way to compare Euclidean distance against a fixed value is
 "distance!^2 < limit!^2" rather than "sqrt(distance!^2) < limit".
 Calculating Euclidean distance invariably involves calculating distance-
 squared as an intermediate value; if you only need the value for a
 comparison, squaring one value is faster than taking the square root of
 the other.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/1088#comment:23>
GRASS GIS <http://grass.osgeo.org>