[GRASS-dev] [GRASS GIS] #2229: error in projection definition

[GRASS GIS]

#2229: error in projection definition
---------------------------------+---------------------------------
  Reporter:  vincent             |      Owner:  grass-dev@…
      Type:  defect              |     Status:  new
  Priority:  normal              |  Milestone:  7.0.5
 Component:  Projections/Datums  |    Version:  svn-releasebranch70
Resolution:                      |   Keywords:
       CPU:  Unspecified         |   Platform:  Unspecified
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Comment (by martinl):

 Replying to [comment:8 vincent]:

 > There is a north-south error of approx. 30 km;
 > It looks like m.proj sends "+rf=298.25..." to cs2cs, where it shoud
 not...

 right, `g.proj -jf` returns

 {{{
 +proj=merc +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +no_defs
 +a=6378137 +rf=298.257223563 +towgs84=0.000,0.000,0.000 +to_meter=1
 }}}

 while proj.4 epsg file says

 {{{
 <3857> +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0
 +y_0=0 +k=1.0 +units=m +nadgrids=@null +wktext  +no_defs <>
 }}}

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Ticket URL: <https://trac.osgeo.org/grass/ticket/2229#comment:10>
GRASS GIS <https://grass.osgeo.org>