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

#2229: error in projection definition
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  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&gt;
GRASS GIS <https://grass.osgeo.org>