[GRASS-dev] [GRASS GIS] #1219: Integrate the IGNF register and the shift grid RGF93-NTF in grass

[GRASS GIS]

#1219: Integrate the IGNF register and the shift grid RGF93-NTF in grass
-------------------------+-------------------------------------------------
  Reporter:  lemaitret   |      Owner:  grass-dev@…
      Type:              |     Status:  new
  enhancement            |
  Priority:  normal      |  Milestone:  7.2.0
 Component:              |    Version:  svn-releasebranch70
  Projections/Datums     |   Keywords:  nad, g.proj, IGNF register shift
Resolution:              |  grid NTF RGF93
       CPU:  All         |   Platform:  All
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Comment (by neteler):

 Here how to test which files are used (expected: via GDAL/PROJ):

 {{{
 PROJ_DEBUG=ON CPL_DEBUG=ON m.proj proj_in="+init=epsg:4326"
 proj_out="+proj=longlat +datum=NAD27" coordinates=-100,40 -d
 }}}

 The debug messages contain the datum shift file usage information.

 TODO: find test case for ntf_r93. Could be done by using the values from
  https://github.com/OSGeo/proj.4/blob/master/nad/testIGNF
 within m.proj.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/1219#comment:10>
GRASS GIS <https://grass.osgeo.org>