[Gdal-dev] netcdf reading problems

[Norman Vine]

Frank Warmerdam writes:
> 
> Tim Sutton wrote:
> > Hi
> > 
> > I am trying to read netcdf data with gdal so that I can convert it to ascii 
> > format, and to be able to view it in QGIS. I found that gdal wont read 
> > any .nc files I give it. The data I am trying to read is multiband (e.g. 
> > http://linux-gis.co.uk/climate_sample.nc), but even a simple single band 
> > layer (http://linux-gis.co.uk/simple.nc) wont read. Iget error message like 
> > this from gdal:
> > 
> > aps02ts at linux:/tmp/netcdf_tests> gdalinfo simple.nc
> > ERROR 4: `simple.nc' not recognised as a supported file format.
> 
> Tim,
> 
> When I wrote the netcdf driver I was primarily interested in exchanging data
> with GMT which uses a very specific organization of the data.  The GDAL
> netCDF driver ignores datasets (even netCDF files) that don't match those
> assumptions.
> 
> Your dataset does not appear to have been generated by GMT.
> 
> I do hope to rewrite this driver someday to adhere to the more general
> COORDS definitions for grid data but this is a reasonably substantial
> job and not anywhere near the top of my priority pile.

Tim

If you use Python you will should find a combination of GDAL's Python
Interface and Konrad Hinsen's Scientific Python extension module useful,
as Scientific Python contains a generic NetCDF interface.

http://dirac.cnrs-orleans.fr/ScientificPython/

HTH

Norman