On Wed, May 22, 2013 at 2:10 PM, Andreas Oxenstierna <a...@t-kartor.se> wrote:
> Dear list, > > GRID cannot interpret (tested with 1.9 and 1.10) the coordinate systems in > two different NetCDF files storing oceanographic/meteorological data. > But it can interpret the coordinates in a third NetCDF file. > PANOPLY, as available from > http://www.giss.nasa.gov/**tools/panoply/<http://www.giss.nasa.gov/tools/panoply/>, > can correctly display all files in lat-lon (4326). > > NetCDF file where GDAL can interpret the coordinates: > https://dl.dropboxusercontent.**com/u/13880880/metoffice_** > foam1_orca025_GLO_ASLV_**b20120923_dm20120921.nc<https://dl.dropboxusercontent.com/u/13880880/metoffice_foam1_orca025_GLO_ASLV_b20120923_dm20120921.nc> > (CF convention is 1.0) > > NetCDF files where GDAL cannot interpret the coordinates: > https://dl.dropboxusercontent.**com/u/13880880/metoffice_** > foam1_orca025_NTV_ASLV_**b20110921_dm20110921.nc<https://dl.dropboxusercontent.com/u/13880880/metoffice_foam1_orca025_NTV_ASLV_b20110921_dm20110921.nc> > (CF convention is 1.0) > http://thredds.met.no/thredds/**fileServer/metno/proff4km/** > default/files/proffDefault4km_**2013-04-25_00.nc<http://thredds.met.no/thredds/fileServer/metno/proff4km/default/files/proffDefault4km_2013-04-25_00.nc>(be > warned: 1.2 Gb) (CF convention is 1.4) > > We have got this information from the Norwegian experts: > For PROFF data, the rotated lat/lon coordinates are defined so that each > latitude and each longitude (and therefore each data point) correspond to > elements in the rlat/rlon vectors. > rotated pole is not supported, sorry. If the driver supported the netcdf-cf coordinates attribute (see Netcdf CF 1.6 section 5.2) these 2 problems would be solved... There is a mention of this in the netcdf improvement wiki at http://trac.osgeo.org/gdal/wiki/NetCDF_Improvements Please add this information to the following ticket http://trac.osgeo.org/gdal/ticket/4285 regards, Etienne > > The GeoTransform array mentioned in > http://www.gdal.org/frmt_**netcdf.html<http://www.gdal.org/frmt_netcdf.html>seems > not to be used for these two files. > > -- > Best Regards > > Andreas Oxenstierna > T-Kartan Produkt AB > mobile: +46 733 206831 > mailto: a...@t-kartor.se > http://www.t-kartor.com > > ______________________________**_________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > http://lists.osgeo.org/**mailman/listinfo/gdal-dev<http://lists.osgeo.org/mailman/listinfo/gdal-dev> >
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