[GRASS-dev] [GRASS GIS] #2402: v.distance in Long/Lat Locations on GRASS 7.0

[GRASS GIS]

#2402: v.distance in Long/Lat Locations on GRASS 7.0
-------------------------+--------------------------------------------------
 Reporter:  micha        |       Owner:  grass-dev@…              
     Type:  enhancement  |      Status:  new                      
 Priority:  normal       |   Milestone:  7.0.0                    
Component:  Default      |     Version:  unspecified              
 Keywords:               |    Platform:  All                      
      Cpu:  Unspecified  |  
-------------------------+--------------------------------------------------

Comment(by mlennert):

 Replying to [comment:4 mmetz]:
 > Replying to [ticket:2402 micha]:
 > > In stable version 6.4, when working in a Long-Lat LOCATION, v.distance
 returns geodesic distance on a sphere in meters (in the cases of point to
 point, and point to line).
 >
 > > In GRASS 7.0 this feature is lost, and distances are always returned
 in the LOCATION units (i.e. degrees in a Long-Lat LOCATION). Geodesic
 distance should be the preferred behavior.
 >
 > Fixed for trunk in r61850.

 With the NC-data reprojected to EPSG 4326, I get the following now:


 {{{
 v.distance -p from=comm_colleges to=comm_colleges upload=dist col=dist
 dmin=0.0001

 Finding nearest features...
  100%
  100%
 from_cat|dist
 1|null
 2|null
 3|null
 [...]
 55|null
 56|null
 57|null
 58|null
  100%
 58 categories - no nearest feature found
 }}}

 Whereas the same command in the NC-location gives me the expected list of
 distances.

 Moritz

-- 
Ticket URL: <https://trac.osgeo.org/grass/ticket/2402#comment:5>
GRASS GIS <http://grass.osgeo.org>