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Re: [idvusers] BUFR support in IDV

Hi Reinoud-
Thanks for trying this out. The BUFR support in the IDV has not really been tested. It relies on the netCDF-Java package to do the reading, so by default, some things "just work", while others (as you found) don't.
Please submit this to support-idv@xxxxxxxxxxxxxxxx and the developers can take a look. It'll probably be passed on to the netCDF-Java support people for action. 

Don

On 11/9/10 2:16 AM, Reinoud Bokhorst wrote:

Hi Don,
After a short break I have started looking into this again. Attached two
surface SYNOP files in BUFR that load fine in toolsUI 4.2 but not in IDV
2.9u2.

I can open the files in IDV as "Netcdf /Gempak point data files" but
when I try to view the data I get the following error:


ucar.ma2.ForbiddenConversionException
at ucar.ma2.ArrayStructure.getFloat(ArrayStructure.java:1022)
at ucar.ma2.StructureDataW.getScalarFloat(StructureDataW.java:139)
at ucar.ma2.StructureDataW.convertScalarFloat(StructureDataW.java:96)
at
ucar.unidata.data.point.PointObFactory.makePointObs(PointObFactory.java:1910)

at
ucar.unidata.data.point.NetcdfPointDataSource.makeObs(NetcdfPointDataSource.java:360)

at
ucar.unidata.data.point.NetcdfPointDataSource.makeObs(NetcdfPointDataSource.java:322)

at
ucar.unidata.data.point.PointDataSource.getDataInner(PointDataSource.java:1266)

at ucar.unidata.data.DataSourceImpl.getData(DataSourceImpl.java:2238)
at ucar.unidata.data.DirectDataChoice.getData(DirectDataChoice.java:332)
at ucar.unidata.data.DataChoice.getData(DataChoice.java:637)
at ucar.unidata.data.DataInstance.getData(DataInstance.java:243)
at ucar.unidata.data.DataInstance.getData(DataInstance.java:207)
at ucar.unidata.data.DataInstance.dataOk(DataInstance.java:295)
at
ucar.unidata.data.point.PointDataInstance.init(PointDataInstance.java:83)
at
ucar.unidata.data.point.PointDataInstance.<init>(PointDataInstance.java:69)
at
ucar.unidata.idv.control.ObsDisplayControl.doMakeDataInstance(ObsDisplayControl.java:795)

at
ucar.unidata.idv.control.DisplayControlImpl.initializeDataInstance(DisplayControlImpl.java:3084)

at
ucar.unidata.idv.control.DisplayControlImpl.setData(DisplayControlImpl.java:3066)

at
ucar.unidata.idv.control.StationModelControl.setData(StationModelControl.java:1459)

at
ucar.unidata.idv.control.StationModelControl.init(StationModelControl.java:463)

at
ucar.unidata.idv.control.DisplayControlImpl.init(DisplayControlImpl.java:1333)

at
ucar.unidata.idv.control.DisplayControlImpl.init(DisplayControlImpl.java:1034)

at
ucar.unidata.idv.ControlDescriptor.initControl(ControlDescriptor.java:986)
at ucar.unidata.idv.ControlDescriptor$1.run(ControlDescriptor.java:911)
at ucar.unidata.util.Misc$3.run(Misc.java:1090)


Regards,
Reinoud



Don Murray wrote:

Hi Reinoud-

On 10/19/10 7:43 AM, Reinoud Bokhorst wrote:

Thank you for your fast response and fix.


No problem. It was my bug, I figured I should fix it and I had a few
spare cycles. ;-)


This particular example now works. But when I try loading other samples
from GTS (Global Telecom System) data it doesn't.. I am a bit confused
now about the level of support of BUFR in IDV (after your fix that made
it work) but as I understand it, it is only partly because the CDM
supports it (correct me if I am wrong ;). Do you want more sample data
at this point? Or rather wait until BUFR is officially going to be
supported?


Can you load all these other files in the ToolsUI? If they conform to
what the CDM thinks are point or station obs, then they should be
readable in the IDV. Although, the CDM implementation might not be
correct. The IDV won't be able to handle soundings (profiles) or
trajectories which the CDM might handle. Sample files would help.


HP, yes I'll probably send a note to the User's Committee, although by
no means I am an expert on this field.


Cheers,

Don






--
Don Murray
NOAA/ESRL/PSD and CIRES
303-497-3596
http://www.esrl.noaa.gov/psd/people/don.murray/
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