Re: [netcdfgroup] How to read grib2 files using Netcdf Java API?

• To: Valliappa Lakshmanan <valliappa.lakshmanan@xxxxxxxx>
• Subject: Re: [netcdfgroup] How to read grib2 files using Netcdf Java API?
• From: John Caron <caron@xxxxxxxxxxxxxxxx>
• Date: Fri, 12 Dec 2008 17:06:50 -0700

Hi Lak:

Im not having any trouble opening from either 4.0 or latest 2.2. Can you
recheck your classpath? Also 4.0 has got less bugs in it at this point, so you
might try it.

Valliappa Lakshmanan wrote:
> John, thanks for looking at this. The file (74MB) is now at:
>
> http://cimms.ou.edu/~lakshman/data/WRFPRS_GrbF21.grib2
>
> Lak
>
>
> On Fri, Dec 12, 2008 at 1:28 PM, John Caron <caron@xxxxxxxxxxxxxxxx
> <mailto:caron@xxxxxxxxxxxxxxxx>> wrote:
>
>     Hi Lak:
>
>     NetcdfDataset.open() should have worked.
>
>     Can you send us the file, and we'll check why its not working.
>
>     Valliappa Lakshmanan wrote:
>     > I know there must be a very simple way to do this, but I can't seem to
>     > find any example or documentation.
>     >
>     > I want to read a Grib2 file using the Java Netcdf API and tried:
>     >
>     > File file = new File("/tmp/WRFPRS_GrbF21.grib2");  // a grib2 file
>     > NetcdfFile ncfile = NetcdfDataset.open(file.getAbsolutePath());
>     >
>     > but get an IOException stating: Cant read
>     /tmp/WRFPRS_GrbF21.grib2: not
>     > a valid NetCDF file.
>     >
>     > I tried using ucar.dt.grid.GridDataSet.open() and got the same result.
>     >
>     > In case it was a classpath/jar problem, I added toolsUI.jar from
>     netcdf
>     > 2.2.22 to my classpath (has grib.jar).
>     > Same result.  What am I missing?
>     >
>     > thanks
>     > Lak
>     >
>     >
>     >
>     >
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• References:
  • Re: [netcdfgroup] How to read grib2 files using Netcdf Java API?
    • From: Valliappa Lakshmanan