Getting the netcdf zip file and keeping all the jars except nlog4j from the
distribution solved my problem.
thanks!
Lak
On Tue, Jan 20, 2009 at 5:00 PM, John Caron <caron@xxxxxxxxxxxxxxxx> wrote:
> ok, i see,
>
> your problem is that you dont have grib.jar in your path. youll also
> need jpeg2000.jar for grib2. Perhaps you should use toolsUI.jar to
> make sure things work, then try paring down to a minimal set of jars
> needed after that.
>
> im working on a better description of the jar dependencies, but for
> now http://www.unidata.ucar.edu/software/netcdf-java/v4.0/README
> should help.
>
> Valliappa Lakshmanan wrote:
> > org.wdssii.ncingest.Grib2Ingest is my application i.e. the class that has
> > the line of code that calls NetcdfDataSet.open()
> >
> > Lak
> >
> > On Tue, Jan 20, 2009 at 4:23 PM, John Caron <caron@xxxxxxxxxxxxxxxx
> > <mailto:caron@xxxxxxxxxxxxxxxx>> wrote:
> >
> > Hi Lak:
> >
> > You have a strange class: "org.wdssii.ncingest.Grib2Ingest" where
> does
> > that come from ?
> >
> >
> >
> > Valliappa Lakshmanan wrote:
> > > John,
> > >
> > > I downloaded the latest netcdf-4.0.jar and tried it. I still get
> the
> > > same problem. Here's the stacktrace, in case the line numbers help
> > > isolate the issue:
> > >
> > > [java] 2009-01-20 14:26:46,867 [main] WARN
> > > org.wdssii.ncingest.Grib2Ingest - java.io.IOException: Cant read
> > > /scratch2/lakshman/modelmining/WRFPRS_GrbF21.grib2: not a valid
> > NetCDF file.
> > > [java] at ucar.nc2.NetcdfFile.open(NetcdfFile.java:628)
> > > [java] at ucar.nc2.NetcdfFile.open(NetcdfFile.java:335)
> > > [java] at ucar.nc2.NetcdfFile.open(NetcdfFile.java:305)
> > > [java] at ucar.nc2.NetcdfFile.open(NetcdfFile.java:292)
> > > [java] at ucar.nc2.NetcdfFile.open(NetcdfFile.java:280)
> > >
> > > The code that throws the exception is simply:
> > > NetcdfDataset.open("/scratch2/..../filename.grib2");
> > >
> > > My classpath consists of the following jar files (netcdf
> > dependencies in
> > > bold):
> > >
> > > commons-logging.jar
> > > *jdom_1.1.jar*
> > > jnotify-0.91.jar
> > > jstl.jar
> > > junit.jar
> > > *log4j-1.2.14.jar*
> > > *netcdf-4.0.jar*
> > > servlet-api.jar
> > > *slf4j-api-1.1.0.jar
> > > slf4j-log4j12-1.1.0.jar*
> > > spring.jar
> > > standard.jar
> > >
> > > thanks
> > > Lak
> > >
> > >
> > > On Fri, Dec 12, 2008 at 6:06 PM, John Caron
> > <caron@xxxxxxxxxxxxxxxx <mailto:caron@xxxxxxxxxxxxxxxx>
> > > <mailto:caron@xxxxxxxxxxxxxxxx <mailto:caron@xxxxxxxxxxxxxxxx>>>
> > wrote:
> > >
> > > 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<http://cimms.ou.edu/%7Elakshman/data/WRFPRS_GrbF21.grib2>
> > <http://cimms.ou.edu/%7Elakshman/data/WRFPRS_GrbF21.grib2>
> > > <http://cimms.ou.edu/%7Elakshman/data/WRFPRS_GrbF21.grib2>
> > > >
> > > > Lak
> > > >
> > > >
> > > > On Fri, Dec 12, 2008 at 1:28 PM, John Caron
> > > <caron@xxxxxxxxxxxxxxxx <mailto:caron@xxxxxxxxxxxxxxxx>
> > <mailto:caron@xxxxxxxxxxxxxxxx <mailto:caron@xxxxxxxxxxxxxxxx>>
> > > > <mailto:caron@xxxxxxxxxxxxxxxx
> > <mailto:caron@xxxxxxxxxxxxxxxx> <mailto: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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