[GRASS-dev] [GRASS GIS] #2417: r.profile should report distance in location units

[GRASS GIS]

#2417: r.profile should report distance in location units
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 Reporter:  annakrat            |       Owner:  grass-dev@…              
     Type:  enhancement         |      Status:  new                      
 Priority:  major               |   Milestone:  7.0.0                    
Component:  Projections/Datums  |     Version:  svn-trunk                
 Keywords:  r.profile, units    |    Platform:  All                      
      Cpu:  Unspecified         |  
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Comment(by annakrat):

 Replying to [comment:7 neteler]:

 > I have created a patch (attached) which introduces US_USFEET as
 suggested years ago
 > by Glynn. It contains one TODO where I don't know how to distinguish the
 special
 > State Plane feet case. How to do that properly? with PROJECTION_SP_USF?

 It seems that the PROJECTION_SP is not recognized anyway
 [http://trac.osgeo.org/grass/browser/grass/trunk/lib/proj/convert.c#L303
 see GPJ_osr_to_grass]. I attached a fixed patch, r.profile seems to report
 units now correctly (tested with
 [http://courses.ncsu.edu/mea582/common/media/01/nc_spf.zip nc_spf
 location]).
 >
 > TODO: GS_geodistance() in ogsf/GS_util.c comes with hardcoded values!
 > Instead G_meters_to_units_factor() should be used, stuff to be merged.

 This function is not used (but it should be merged anyway).

 If there are no objections, I will commit it.

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Ticket URL: <http://trac.osgeo.org/grass/ticket/2417#comment:8>
GRASS GIS <http://grass.osgeo.org>