[IDV #WHM-665465]: Can not select some DFFD datasets

Greetings Albert,

Yes, I looked into this a bit more and found that the problem happens
pretty often. I don't seem to have any issues with the non-conduit NDFD grids:

http://motherlode.ucar.edu/thredds/catalog/fmrc/NCEP/NDFD/CONUS_5km/files/catalog.xml

However, they are only available for 12Z and 18Z.

One way around this is to download the conduit-feed grib2 file to your 
disk and load it directly into the IDV, using the following steps:

1) Go to 
http://motherlode.ucar.edu/thredds/catalog/NCEP/NDFD/conduit/CONUS_5km/catalog.html
find the output you wish to use, and follow that link.

2) On the page that the link takes you to, look for the 'Access' section and
click on the link after "HTTPServer" - this will download the grib2 file.

3) In the IDV, go to the Dashboard and click on the "Data Choosers" tab.
Make sure to select "General -> Files" on the left side of the dashboard,
then use the file system explorer in the shown in the "Data Choosers" tab
to navigate to the file you just downloaded, and click "Add Source."

Given that this works, it seems like there may be a bug in THREDDS, so 
I've submitted a bug that you can follow along with, if you wish:

https://www.unidata.ucar.edu/jira/browse/TDS-305

I'm not aware of any other sources for NDFD as we distribute it (it looks
like NOMADS may break up the file into several regions  for serving 
http://nomads.ncdc.noaa.gov/thredds/catalog.html).

Cheers,

Sean

> Sean,
> 
> There are other examples peppered in the data sets that it can not read.
> This seems to be an ongoing issue. For example today (7/13) 2100, 2000,
> 1700 plus more have the same problem. (Something like a 1/3-1/2 or the
> datasets have the issue.)
> Are there other sources for the NCEP NDFD (current not historical) data?
> 
> Thanks,
> Albert
> 
> 
> On 7/13/2012 11:49 AM, Unidata IDV Support wrote:
> > Greetings Albert!
> >
> > It looks like the 12 and 13 Z grib files from 2012-07-10 are messed up, but 
> > the others I tried are
> > ok. I'll look into what happened, but you shouldn't have any issues 
> > accessing other NDFD data. Let
> > me know if you see any other issues.
> >
> > Cheers,
> >
> > Sean
> >
> >> Full Name: Albert Boulanger
> >> Email Address:address@hidden
> >> Organization: Columbia University
> >> Package Version: 3.0u2 build date:2012-02-10 17:21 UTC
> >> Operating System: Windows 7
> >> Hardware: Java: home: D:\IDV_3.0u2\jre version: 1.6.0_20 j3d:1.5.2 fcs 
> >> (build4)
> >> Description of problem: I get this error when selecting this dataset. 
> >> Pretty straightforward error.
> >>
> >> There was an error loading the data:
> >> Error creating data source:OPENDAP.GRID 
> >> with:http://motherlode.ucar.edu:8080/thredds/dodsC/NCEP/NDFD/conduit/CONUS_5km/NDFD_CONUS_5km_conduit_20120710_1200.grib2
> >> Grid data source failed making data set: 
> >> dods://motherlode.ucar.edu:8080/thredds/dodsC/NCEP/NDFD/conduit/CONUS_5km/NDFD_CONUS_5km_conduit_20120710_1200.grib2
> >> Variable name (time) must be unique within Group
> >>
> >> ******************
> >> Stack trace:
> >> java.lang.IllegalArgumentException: Variable name (time) must be unique 
> >> within Group
> >> at ucar.nc2.Group.addVariable(Group.java:458)
> >> at ucar.nc2.dods.DODSNetcdfFile.addVariable(DODSNetcdfFile.java:646)
> >> at 
> >> ucar.nc2.dods.DODSNetcdfFile.constructTopVariables(DODSNetcdfFile.java:616)
> >> at ucar.nc2.dods.DODSNetcdfFile.<init>(DODSNetcdfFile.java:271)
> >> at ucar.nc2.dataset.NetcdfDataset.acquireDODS(NetcdfDataset.java:809)
> >> at ucar.nc2.dataset.NetcdfDataset.openOrAcquireFile(NetcdfDataset.java:654)
> >> at ucar.nc2.dataset.NetcdfDataset.openDataset(NetcdfDataset.java:424)
> >> at ucar.nc2.dataset.NetcdfDataset.acquireDataset(NetcdfDataset.java:520)
> >> at ucar.nc2.dt.grid.GridDataset.open(GridDataset.java:101)
> >> at ucar.nc2.dt.grid.GridDataset.open(GridDataset.java:87)
> >> at 
> >> ucar.unidata.data.grid.GeoGridDataSource.doMakeDataSet(GeoGridDataSource.java:1094)
> >> at 
> >> ucar.unidata.data.grid.GeoGridDataSource.getDataset(GeoGridDataSource.java:1116)
> >> at 
> >> ucar.unidata.data.grid.GeoGridDataSource.initAfterCreation(GeoGridDataSource.java:478)
> >> at ucar.unidata.data.DataManager.createDataSource(DataManager.java:1577)
> >> at 
> >> ucar.unidata.idv.IntegratedDataViewer.createDataSource(IntegratedDataViewer.java:1980)
> >> at 
> >> ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1897)
> >> at 
> >> ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1831)
> >> at 
> >> ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1804)
> >> at ucar.unidata.idv.chooser.IdvChooser.makeDataSource(IdvChooser.java:943)
> >> at ucar.unidata.idv.chooser.XmlChooser.makeDataSource(XmlChooser.java:280)
> >> at 
> >> ucar.unidata.idv.chooser.ThreddsHandler.processNodes(ThreddsHandler.java:851)
> >> at 
> >> ucar.unidata.idv.chooser.ThreddsHandler.processNode(ThreddsHandler.java:780)
> >> at sun.reflect.GeneratedMethodAccessor142.invoke(Unknown Source)
> >> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> >> at java.lang.reflect.Method.invoke(Unknown Source)
> >> at ucar.unidata.util.Misc$2.run(Misc.java:1064)
> >> at ucar.unidata.util.Misc$3.run(Misc.java:1090)
> >>
> >>
> >>
> > Ticket Details
> > ===================
> > Ticket ID: WHM-665465
> > Department: Support IDV
> > Priority: Normal
> > Status: Open
> >
> >
> 
> 
> 


Ticket Details
===================
Ticket ID: WHM-665465
Department: Support IDV
Priority: Normal
Status: Open