As Micha suggested, the National AGD66 distortion grid at http://www.icsm.gov.au/icsm/gda/gdatm/national66.zip and AGD84 distortion grid at http://www.icsm.gov.au/icsm/gda/gdatm/national84.zip seem to be the way forward.
When unzipped, put into the proj directory (for me usr/share/proj) and coupled via the +nadgrids= parameter in a Custom CRS, it seems to yield the correct transform when tested. +proj=utm +zone=55 +south +ellps=aust_SA +nadgrids=AGD66.gsb +units=m +no_defs (I renamed the unzipped distortion file 'A66 National (13.09.01).gsb' file to 'AGD66.gsb' for convenience) But I can't make the parameters stick in the CRS of a vector file using the override facility. Any ideas? -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/Projection-of-Shapefile-export-tp5536736p5561744.html Sent from the qgis-user mailing list archive at Nabble.com. _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user