.prj files lack TOWGS84 WKT parameter and EPSG (AUTHORITY) codes In gdal master this has been fixed recently (gdal master 2f135c1d) by adding the config option GDAL_FIX_ESRI_WKT=TOWGS84 see http://www.gdal.org/ogr/classOGRSpatialReference.html#ad556dfdc04d9ec5f1714fc6b5e0eb6a6 and http://trac.osgeo.org/gdal/ticket/4345
However, this uses GDAL/OGR 'preferred' datums, which may not be the same as the one in your TAB file Also, that fix only messes with the TOWGS84 parameters and not the AUTHORITY nodes (EPSG code), which is why your CRS lacks the EPSG code. cheers Etienne On Wed, Mar 14, 2012 at 1:00 PM, Zirneklitis <[email protected]> wrote: > Datums are slightly different. > > James Stott wrote: >> >> .. >> The definition of a layer in QGIS using OSGB 1936 / British National >> Grid (27700) is: >> >> .. +towgs84=446.448,-125.157,542.06,0.15,0.247,0.842,-20.489 .. >> >> .. >> >> below which seems to match the EPSG 27700 definition but does not get >> recognised as 27700: >> >> .. >> .. +towgs84=446.448,-125.157,542.06,0.1502,0.247,0.8421,-20.4894 .. >> >> .. > > _______________________________________________ > Qgis-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-user _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
