[GRASS-dev] Re: [GRASS GIS] #807: r.watershed doesnt consider longer distance to diagonal neighbouring pixels

[GRASS GIS]

#807: r.watershed doesnt consider longer distance to diagonal neighbouring pixels
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  Reporter:  aread   |       Owner:  grass-dev at lists.osgeo.org
      Type:  defect  |      Status:  new                      
  Priority:  major   |   Milestone:  6.4.0                    
 Component:  Raster  |     Version:  6.4.0 RCs                
Resolution:          |    Keywords:  r.watershed              
  Platform:  All     |         Cpu:  All                      
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Comment (by mmetz):

 Replying to [comment:2 hamish]:
 >
 > how does the patch (or r.watershed for that matter) work with lat/lon
 locations?

 Tested only in real projections, should most probably use geodesic
 distance for lat/lon locations?

 I'm busy investigating the new patch for its behaviour in depressions,
 just to make sure I do not introduce another bug. Outside depressions it
 looks ok, flow directions are set as expected.

 > maybe that had something to do with the removal (????)
 > FWIW svn (cvs) history back to 1999 (~r1 to r3) can be found in the
 grass54 branch even if the history has been broken in trunk. Also the old
 ViewCVS is AFAIK still up & running (link on trac wiki page).

 The change happened between 1990 (grass32) and 1998 (grass40), I did not
 manage to find that commit :-(

 Markus M

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Ticket URL: <https://trac.osgeo.org/grass/ticket/807#comment:4>
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