On Mon, 25 Sep 2006, Julien Mariel wrote:
New Client Reply: New problem with Grib12Netcdf
Hi,
Thanks for your answer. I'm a new user of netcdf-java api, so could you tell me
how can I convert this grib file into 2 separate netcdf files (one GDS by file)?
Julien,
John mentioned in one of his responses that this functionality was not
currently available, but i thought of an intermediate solution. The solution
would require some manual editing of the index file that was created for your
data file. In the second section of the index, the 12th field from the left is
the Gdskey that designates which GDS that the parmeter belongs too. See file,
IndexFormat.txt in the base of the distribution or in the java-docs. The
process would require you to delete all the Gdskey parameters except the one
that you want to convert to a NetCDF file. Also in section 3 of the index you
delete all the GDS except the one that you want. That's it.
% java -Xmx256m ucar/grib/grib1/Grib1Indexer <input file> <input file>.gbx
or
% java -Xmx256m ucar/grib/grib2/Grib2Indexer <input file> <input file>.gbx
edit <input file>.gbx
# Grib2Netcdf outputs works on either Grib 1 or 2 inputs
% java -Xmx256m ucar/nc2/iosp/grib/Grib2Netcdf <input file> <output.nc>
Robb...
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Robb Kambic Unidata Program Center
Software Engineer III Univ. Corp for Atmospheric Research
rkambic@xxxxxxxxxxxxxxxx WWW: http://www.unidata.ucar.edu/
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