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Re: Grib2 / Re: Supporting other data formats

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Subject: Re: Grib2 / Re: Supporting other data formats
Date: Mon, 18 Apr 2005 17:25:10 -0600

The thredds code isnt released yet.

The latest netcdf-java-2.2 has this bug fixed, you can download at

 http://www.unidata.ucar.edu/packages/netcdf-java/

it will take a bit longer to propagate this to IDV and THREDDS.


Conroe, David (Cont, ARL/CISD) wrote:

Rob

I am having a little problem finding the GRIB code in the THREDDS

package on the Unidata site.

Please give me a little more info on how to download the packages.

Thanks

Dave Conroe
NMSU/PSL/IMETS
Phone DSN 258-1338, Comm 505-678-1338

Fax 1735

-----Original Message-----
From: address@hidden
[mailto:address@hidden] On Behalf Of John Caron
Sent: Friday, April 15, 2005 6:02 PM
To: Rob Cermak
Cc: address@hidden; address@hidden
Subject: Re: Grib2 / Re: Supporting other data formats


Hi Rob:

Actually, this should work, i believe its a bug, ill let you know whenwe have a fix.

BTW, a workaround is to open the file locally in the IDV, and then copythe generated index (*.gbx) onto the web server in the same directory.This will speed access up, so its a good thing to do anyway.


Rob Cermak wrote:

cc: to IDV group

the THREDDS package using nj22 already handles grib2 as well as grib1.

the grib decoders are written in java and can be used as a seperatepackage. the IDV now can read grib1 and grib2 files directly.
robb...
Hmmm, I've got IDV 1.2b2 and tried to point it via URL (directly) to agrib1 and grib2 file and fails. I would be wonderful to have IDV workdirectly on grib1 and grib2 files.
[cermak@glasgow bin]$ uname -a
Linux glasgow.ims.uaf.edu 2.6.8.1-10mdk #1 Wed Sep 8 17:00:52 CEST 2004
i686 Intel(R) Pentium(R) 4 CPU 2.26GHz unknown GNU/Linux

Java = j2re1.4.2_06, its old

Rob

Grib1:
http://ak.aoos.org/ldm2/conduit/nam_216/20050415/1200/PRMSL_000

Grib2:
http://ak.aoos.org/ldm2/conduit/gfs_000/20050415/1200/PMSL_000
Open data source via web -> Grid files (netCDF/GRIB/OPeNDAP). Lookslike
the grid types are correctly detected.

Grib1, error:
java.lang.NullPointerException
        at ucar.nc2.iosp.grib.Index2NC.open(Index2NC.java:20)
        at

ucar.nc2.iosp.grib.Grib1ServiceProvider.open(Grib1ServiceProvider.java:7
5)

        at ucar.nc2.NetcdfFile.<init>(NetcdfFile.java:645)
        at ucar.nc2.NetcdfFile.open(NetcdfFile.java:263)
        at ucar.nc2.NetcdfFile.open(NetcdfFile.java:212)
        at

ucar.nc2.dataset.NetcdfDataset.openFile(NetcdfDataset.java:226)

at

ucar.nc2.dataset.NetcdfDataset.openDataset(NetcdfDataset.java:125)

        at ucar.nc2.dataset.grid.GridDataset.open(GridDataset.java:65)
        at

ucar.nc2.dataset.grid.GridDataset.factory(GridDataset.java:74)

at

ucar.unidata.data.grid.GeoGridDataSource.doMakeDataSet(GeoGridDataSource
.java:266)

at

ucar.unidata.data.grid.GeoGridDataSource.getDataset(GeoGridDataSource.ja
va:283)

at

ucar.unidata.data.grid.GeoGridDataSource.doMakeDataChoices(GeoGridDataSo
urce.java:297)

at

ucar.unidata.data.DataSourceImpl.getDataChoices(DataSourceImpl.java:959)

at

ucar.unidata.data.DataManager.createDataSource(DataManager.java:850)

at

ucar.unidata.idv.IntegratedDataViewer.createDataSource(IntegratedDataVie
wer.java:1280)

at

ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewe
r.java:1218)

at

ucar.unidata.idv.IntegratedDataViewer.handleAction(IntegratedDataViewer.
java:1075)

        at ucar.unidata.idv.DefaultIdv.handleAction(DefaultIdv.java:111)
        at

ucar.unidata.idv.IntegratedDataViewer.handleAction(IntegratedDataViewer.
java:1022)

at

ucar.unidata.idv.chooser.UrlChooser.loadURLInner(UrlChooser.java:176)

at

ucar.unidata.idv.chooser.UrlChooser.loadURL(UrlChooser.java:152)

at

ucar.unidata.idv.chooser.UrlChooser.access$000(UrlChooser.java:72)

at

ucar.unidata.idv.chooser.UrlChooser$1.run(UrlChooser.java:191)

        at ucar.unidata.util.Misc$2.run(Misc.java:773)

grib2 error:

java.lang.NullPointerException
        at ucar.nc2.iosp.grib.Index2NC.open(Index2NC.java:20)
        at

ucar.nc2.iosp.grib.Grib2ServiceProvider.open(Grib2ServiceProvider.java:7
5)

        at ucar.nc2.NetcdfFile.<init>(NetcdfFile.java:645)
        at ucar.nc2.NetcdfFile.open(NetcdfFile.java:263)
        at ucar.nc2.NetcdfFile.open(NetcdfFile.java:212)
        at

ucar.nc2.dataset.NetcdfDataset.openFile(NetcdfDataset.java:226)

at

ucar.nc2.dataset.NetcdfDataset.openDataset(NetcdfDataset.java:125)

        at ucar.nc2.dataset.grid.GridDataset.open(GridDataset.java:65)
        at

ucar.nc2.dataset.grid.GridDataset.factory(GridDataset.java:74)

at

ucar.unidata.data.grid.GeoGridDataSource.doMakeDataSet(GeoGridDataSource
.java:266)

at

ucar.unidata.data.grid.GeoGridDataSource.getDataset(GeoGridDataSource.ja
va:283)

at

ucar.unidata.data.grid.GeoGridDataSource.doMakeDataChoices(GeoGridDataSo
urce.java:297)

at

ucar.unidata.data.DataSourceImpl.getDataChoices(DataSourceImpl.java:959)

at

ucar.unidata.data.DataManager.createDataSource(DataManager.java:850)

at

ucar.unidata.idv.IntegratedDataViewer.createDataSource(IntegratedDataVie
wer.java:1280)

at

ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewe
r.java:1218)

at

ucar.unidata.idv.IntegratedDataViewer.handleAction(IntegratedDataViewer.
java:1075)

        at ucar.unidata.idv.DefaultIdv.handleAction(DefaultIdv.java:111)
        at

ucar.unidata.idv.IntegratedDataViewer.handleAction(IntegratedDataViewer.
java:1022)

at

ucar.unidata.idv.chooser.UrlChooser.loadURLInner(UrlChooser.java:176)

at

ucar.unidata.idv.chooser.UrlChooser.loadURL(UrlChooser.java:152)

at

ucar.unidata.idv.chooser.UrlChooser.access$000(UrlChooser.java:72)

at

ucar.unidata.idv.chooser.UrlChooser$1.run(UrlChooser.java:191)

        at ucar.unidata.util.Misc$2.run(Misc.java:773)

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