Grib2 / Re: Supporting other data formats

[Don Murray]

Hi Rob-

Rob Cermak wrote:

> Hmmm, I've got IDV 1.2b2 and tried to point it via URL (directly) to
> a grib1 and grib2 file and fails.  I would be wonderful to have IDV work
> directly on grib1 and grib2 files.  

At present, it does not work from a remote set of files, only local.

> [cermak at 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).  Looks like 
> the grid types are correctly detected.

Thanks for the stack trace.  We'll look into this further.

> Grib1, error:
> java.lang.NullPointerException
> 	at ucar.nc2.iosp.grib.Index2NC.open(Index2NC.java:20)
> 	at ucar.nc2.iosp.grib.Grib1ServiceProvider.open(Grib1ServiceProvider.java:75)
> 	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.java:283)
> 	at ucar.unidata.data.grid.GeoGridDataSource.doMakeDataChoices(GeoGridDataSource.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(IntegratedDataViewer.java:1280)
> 	at ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.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:75)
> 	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.java:283)
> 	at ucar.unidata.data.grid.GeoGridDataSource.doMakeDataChoices(GeoGridDataSource.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(IntegratedDataViewer.java:1280)
> 	at ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.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)
> 
> 

Don
*************************************************************
Don Murray                               UCAR Unidata Program
dmurray at unidata.ucar.edu                        P.O. Box 3000
(303) 497-8628                              Boulder, CO 80307
http://www.unidata.ucar.edu/staff/donm
         "Time makes everyone interesting, even YOU!"
*************************************************************