This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
Hi Jennifer- > Full Name: Jennifer Vogt > Email Address: address@hidden > Organization: University of Wyoming > Package Version: 2.6 build date:2008-12-24 20:03 UTC > Operating System: Windows XP > Hardware: Java: home: \\batcivet\atscapps\IDV_2.6\windows\jre version: > 1.6.0_11 j3d:1.5.2 fcs (build4) > Description of problem: There was an error loading the data: > Error creating data source:FILE.RADAR with: [Ljava.lang.String;@1e47f9d > null > Cant read Z:/cloudgps/may21/KCYS/KCYS_level2/KCYS20080521_220210.Z: not a > valid NetCDF file. Thanks for the sample file. I was able to read it in 2.6, 2.6u2, and 2.7b1 so I'm a bit stumped. One thing could be that the uncompression of the file didn't work and you are looking at a bad copy of the uncompressed file. To read these, the IDV has to uncompress them into a temporary directory. These will be stored in your home directory under the .unidata/idv/DefaultIdv/tmp/nj22 directory. I would suggest looking in that directory and deleting the temporary file. Look for one that has the pattern of your file name. Directories are encoded so it will look something like: Z%3A%2Fcloudgps%2Fmay21%2Fmay21%2FKCYS_level2%2FKCYS20080521_212752 These temporary files get deleted over time, so if you are working with these data alot, you might want to uncompress the original files first so the IDV doesn't have to. Another possibility is that you have a disk quota set on your home directory and that is causing the uncompression to fail. Try uncompressing a file that doesn't work now and see if you can read it in. Don > ****************** > Stack trace: > visad.VisADException: Cant read > Z:/cloudgps/may21/may21/KCYS_level2/KCYS20080521_220210.Z: not a valid NetCDF > file. > at ucar.unidata.data.radar.CDMRadarAdapter.init(CDMRadarAdapter.java:381) > at ucar.unidata.data.radar.CDMRadarAdapter.<init>(CDMRadarAdapter.java:179) > at > ucar.unidata.data.radar.CDMRadarDataSource.makeRadarAdapter(CDMRadarDataSource.java:461) > at > ucar.unidata.data.radar.RadarDataSource.makeAdapters(RadarDataSource.java:282) > at > ucar.unidata.data.radar.RadarDataSource.getAdapters(RadarDataSource.java:246) > at > ucar.unidata.data.radar.RadarDataSource.getRadarAdapters(RadarDataSource.java:484) > at > ucar.unidata.data.radar.CDMRadarDataSource.doMakeDataChoices(CDMRadarDataSource.java:245) > at ucar.unidata.data.DataSourceImpl.getDataChoices(DataSourceImpl.java:1725) > at ucar.unidata.data.DataManager.createDataSource(DataManager.java:1472) > at > ucar.unidata.idv.IntegratedDataViewer.createDataSource(IntegratedDataViewer.java:1945) > at > ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1862) > at > ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1796) > at > ucar.unidata.idv.IntegratedDataViewer.makeDataSource(IntegratedDataViewer.java:1769) > at ucar.unidata.idv.chooser.IdvChooser.makeDataSource(IdvChooser.java:839) > at > ucar.unidata.idv.chooser.Level2RadarChooser.selectFilesInner(Level2RadarChooser.java:257) > at ucar.unidata.idv.chooser.FileChooser.selectFiles(FileChooser.java:501) > at ucar.unidata.idv.chooser.FileChooser.doLoadInThread(FileChooser.java:523) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at ucar.unidata.util.Misc$2.run(Misc.java:1010) > at ucar.unidata.util.Misc$3.run(Misc.java:1038) > > > Ticket Details =================== Ticket ID: RRG-291791 Department: Support IDV Priority: Normal Status: Open