[GRASS-dev] [GRASS GIS] #1708: r.fill.dir leaves unresolved areas

GRASS GIS trac at osgeo.org
Fri Aug 24 04:11:13 PDT 2012

#1708: r.fill.dir leaves unresolved areas
 Reporter:  marchesinivan  |       Owner:  grass-dev@…              
     Type:  defect         |      Status:  new                      
 Priority:  normal         |   Milestone:  7.0.0                    
Component:  Raster         |     Version:  svn-trunk                
 Keywords:                 |    Platform:  Linux                    
      Cpu:  x86-64         |  

Comment(by mmetz):

 Replying to [comment:1 marchesinivan]:
 > Moreover, iterating the command in grass grass70 do not decrease the
 unresolved areas as instead happen using grass64

 This seems to be different bugs in different branches related to the -f
 flag, "Find unresolved areas only".

 For grass64, problem areas are resolved if the flag is not given, whereas
 for grass7, problem areas are resolved if the flag is given. Fixed for
 trunk in r52872.

 BTW, if you want to prepare a dem for hydrological analysis, r.fill.dir is
 not really appropriate because it uses a method based on questionable
 assumptions (sink filling). In this case maybe you could give r.hydrodem
 from addons a try (impact reduction approach).

 Markus M

Ticket URL: <http://trac.osgeo.org/grass/ticket/1708#comment:2>
GRASS GIS <http://grass.osgeo.org>

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