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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
Michael, Your version of the IDV is quite old. First update your IDV. http://www.unidata.ucar.edu/downloads/idv/current/index.jsp Best, Unidata IDV Support > Full Name: Michael Geigert > Email Address: address@hidden > Organization: CT DEEP > Package Version: 4.0u1 build date:2013-03-29 18:10 UTC > Operating System: Windows 7 > Hardware: Java: home: C:\Program Files (x86)\IDV_4.0u1\jre version: 1.6.0_43 > j3d:1.5.2 fcs (build4) > Description of problem: There was an error loading the data: > Error creating data source:file.grid with: > http://nomads.ncdc.noaa.gov/thredds/catalog/nam218/201407/20140707/catalog.html?dataset=nam218/201407/20140707/nam_218_20140707_1800_000.grb > Grid data source failed making data set: > http://nomads.ncdc.noaa.gov/thredds/catalog/nam218/201407/20140707/catalog.html?dataset=nam218/201407/20140707/nam_218_20140707_1800_000.grb > Server does not support Content-Length > > Trying to load archived NAM data but server does not support content length. > Any ideas? > > ****************** > Stack trace: > java.io.IOException: Server does not support Content-Length > at > ucar.unidata.io.http.HTTPRandomAccessFile.<init>(HTTPRandomAccessFile.java:103) > at > ucar.unidata.io.http.HTTPRandomAccessFile.<init>(HTTPRandomAccessFile.java:67) > at ucar.nc2.NetcdfFile.getRaf(NetcdfFile.java:493) > at ucar.nc2.NetcdfFile.open(NetcdfFile.java:392) > at ucar.nc2.dataset.NetcdfDataset.openOrAcquireFile(NetcdfDataset.java:687) > at ucar.nc2.dataset.NetcdfDataset.openDataset(NetcdfDataset.java:418) > at ucar.nc2.dataset.NetcdfDataset.acquireDataset(NetcdfDataset.java:513) > at ucar.nc2.dt.grid.GridDataset.open(GridDataset.java:104) > at ucar.nc2.dt.grid.GridDataset.open(GridDataset.java:90) > at > ucar.unidata.data.grid.GeoGridDataSource.doMakeDataSet(GeoGridDataSource.java:1113) > at > ucar.unidata.data.grid.GeoGridDataSource.getDataset(GeoGridDataSource.java:1135) > at > ucar.unidata.data.grid.GeoGridDataSource.initAfterCreation(GeoGridDataSource.java:499) > at ucar.unidata.data.DataManager.createDataSource(DataManager.java:1597) > 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.handleAction(IntegratedDataViewer.java:1673) > at ucar.unidata.idv.DefaultIdv.handleAction(DefaultIdv.java:114) > at > ucar.unidata.idv.IntegratedDataViewer.handleAction(IntegratedDataViewer.java:1605) > at > ucar.unidata.idv.control.TextDisplayControl$10.run(TextDisplayControl.java:1408) > at ucar.unidata.util.Misc$3.run(Misc.java:1249) > > > Ticket Details =================== Ticket ID: VFX-114865 Department: Support IDV Priority: Normal Status: Closed