[geotk] Convert NetCDF to GeoTIFF?

[Martin Desruisseaux]

Hello Jon

Le 28/03/11 12:42, Jon Blower a écrit :
> Is it possible to use Geotoolkit (or perhaps another tool) to convert a NetCDF file to a GeoTIFF?

It needs to be tested... In theory, the steps would be as below:

ImageCoverageReader reader = new ImageCoverageReader();
reader.setInput(new File("myfilename.nc"));
GridCoverage coverage = reader.read(0, null);
reader.dispose();

GridCoverageWriteParam param = new GridCoverageWriteParam();
param.setFormatName("geotiff");

ImageCoverageWriter writer = new ImageCoverageWriter();
writer.setOutput(new File("myfilename.tiff"));
writer.write(coverage, param);
writer.dispose();


Those steps delegates to the Image I/O framework for doing the actual work. So 
the capability to read NetCDF and write GeoTIFF depends on the quality of those 
Image I/O plugins:

    *

      There is a geotk-coverageio-netcdf module, but it currently can handle
      only relatively simple CRS. More complex CRS thrown an "unsupported
      operation" exception at reading time. Improving the NetCDF module is my
      next task after releasing the final GeoAPI 3.0 and its Geotk reference
      implementation.

    *

      There is a geotk-coverageio-geotiff module in the pending part of geotk.
      It has write capability, but Johan reported some issues with it as well. I
      didn't had the time yet to look at the GeoTIFF module myself. It would
      need to be tested.


Probably the best alternative tool to explore would be GDAL?

     Regards,

         Martin