On Tue, Sep 7, 2010 at 5:08 AM, Paolo Cavallini <[email protected]> wrote: > Hi all. > The EPSG def for ED50 (EPSG:23032) is a standard one: > +proj=utm +zone=32 +ellps=intl +units=m +no_defs > For Western Europe, the corrected datum is: > +proj=utm +zone=32 +ellps=intl +units=m +no_defs +towgs84=-87,-96,-120,0,0,0,0 > Any objection to add it, as we have done for 3003 etc.? > All the best.
Paolo, I would note that the EPSG init file now (perhaps only in trunk, not the release) has: # ED50 <4230> +proj=longlat +ellps=intl +towgs84=-87,-98,-121,0,0,0,0 +no_defs <> For some reason, this EPSG derived towgs84 value is slightly different than the one you propose. I would like to encourage the QGIS team to work with me to ensure that such adjustments are not done differently in QGIS than in the upstream database. I will note that a substantial overhaul was done over the last year to incorporate better datum shift selection when converting the EPSG database to a proj.4 init file. Best regards, -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, [email protected] light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent _______________________________________________ Qgis-developer mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-developer
