[GRASS-dev] [GRASS GIS] #1849: Cannot create a new GRASS Location using a custom proj4 string

[GRASS GIS]

#1849: Cannot create a new GRASS Location using a custom proj4 string
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 Reporter:  voncasec                       |       Owner:  grass-dev@…              
     Type:  defect                         |      Status:  new                      
 Priority:  critical                       |   Milestone:  6.4.3                    
Component:  Projections/Datums             |     Version:  unspecified              
 Keywords:  proj4, location wizard, wxgui  |    Platform:  Linux                    
      Cpu:  x86-64                         |  
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Comment(by hamish):

 current situation of loc wiz + datum transform options in devbr6 nightly
 wingrass build:  (which uses proj4 4.8.0)

 test 1: datum transform selection
  proj: nzmg, datum: nzgd49, (epsg: 27200)
  datum transform: "2" NTv2 grid file

  - setup by terms: works!
  - setup by epsg code: grid file selected but +towgs84= 7-term in Summary
 page & loc'n.
  - setup by proj terms: "+proj=nzmg +datum=nzgd49"; grid file selected but
 no sign of it in the Summary page and loc'n created with the +towgs84
 7-term transform.


 test 2: no datum
  - setup by terms: proj -> ll, ellipsoid only -> sphere -> error. (see
 trac #1967)


 these two things are the last majors blocking release AFAICT.


 Hamish

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Ticket URL: <https://trac.osgeo.org/grass/ticket/1849#comment:8>
GRASS GIS <http://grass.osgeo.org>