Zoltan, Le mercredi 29 octobre 2014 13:21:51, Zoltan Szecsei a écrit : > Hi, > I'm running an older version of gdalbuildvrt that does not recognise the > a_srs parameter, so I want to replace line 2 of the resulting VRT file > with my own SRS entry. > I have tried: > > <SRS>HBKNO27</SRS>
Yes, that will not work. The VRT driver uses the SetFromUserInput() API. See its doc for accepted syntax : http://www.gdal.org/classOGRSpatialReference.html#aec3c6a49533fe457ddc763d699ff8796 Based on the definition I found in http://hub.qgis.org/issues/8487.pdf, I have managed to make it work with <SRS>+proj=tmerc +lat_0=0 +lon_0=27 +k=1 +x_0=0 +y_0=0 +axis=enu +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs</SRS> Perhaps the following can work too (untested) provided a 'ZANGI' file exists in the PROJ.4 resource directory that contains the 'epsg' file, grids, and other files. <SRS>+init=ZANGI:ZANGI:HBKNO27</srs> Even > > and various other permutations with and without the 'ZANGI:' prefix. > > From the GDAL tutorial, I know the EPSG code syntax style is > <SRS>EPSG:4326</SRS> > > The CRS I need is ZANGI:ZANGI:HBKNO27 or 'South African CRS: HBK_NO_27' > > Can someone please guide me to the correct syntax. > > TIA, > Zoltan -- Spatialys - Geospatial professional services http://www.spatialys.com _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
