[Proj] Adding ETRS89 datum to proj?

Ari Jolma ari.jolma at gmail.com
Tue Mar 1 06:46:09 EST 2011

Heiko and others on the list,

See also this: http://trac.osgeo.org/proj/ticket/15


On 03/01/2011 10:32 AM, Heiko Klein wrote:
> Hi,
> the ETRS89 datum gets more and more important for Europeans, since it is
> a EU / INSPIRE proposal to use that datum for all data. I've seen the
> discussion about the ETRS89 datum definition for the EPSG codes on
> http://trac.osgeo.org/proj/ticket/11
> Wouldn't it be a good idea to add the ETRS89 datum to 'proj -ld'? I
> usually only use the +datum parameter, if any, but have never used
> 'towgs' before.
> I haven't worked so much with the proj code, but as far as I can see,
> adding the 'ETRS89' datum would just require a line like
> "ETRS89","towgs84=0,0,0","GRS80", "European Terrestrial Reference System
> 1989",
> in http://trac.osgeo.org/proj/browser/trunk/proj/src/pj_datums.c
> Best regards,
> Heiko
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