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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
> Full Name: Chloe Thomas > Email Address: address@hidden > Organization: University of Bristol > Package Version: 5.2 build date:2015-08-26 18:19 UTC > Operating System: Windows 7 > Hardware: Java: home: C:\Program Files (x86)\Java\jre1.8.0_51 version: > 1.8.0_51 j3d:1.6.0-pre10-daily-experimental daily > Description of problem: There was an error loading the data: > Error creating data source:opendap.grid with: > http://opendap.aviso.altimetry.fr/thredds/dodsC/dataset-duacs-dt-global-allsat-madt-h > Grid data source failed making data set: > dods://opendap.aviso.altimetry.fr/thredds/dodsC/dataset-duacs-dt-global-allsat-madt-h > HTTP/1.1 401 Authorization Required Hi Chloe, Some of the dataset may not be opened to the public. You need to contact the data server provider for the issue of authentication problem. Yuan > > ****************** > Stack trace: > org.apache.http.auth.InvalidCredentialsException: HTTP/1.1 401 Authorization > Required > at opendap.dap.DConnect2.openConnection(DConnect2.java:277) > at opendap.dap.DConnect2.getDDS(DConnect2.java:589) > at opendap.dap.DConnect2.getDDS(DConnect2.java:560) > at ucar.nc2.dods.DODSNetcdfFile.<init>(DODSNetcdfFile.java:241) > at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) > at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) > at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) > at java.lang.reflect.Constructor.newInstance(Unknown Source) > at > ucar.nc2.dataset.NetcdfDataset.openDodsByReflection(NetcdfDataset.java:1040) > at ucar.nc2.dataset.NetcdfDataset.acquireDODS(NetcdfDataset.java:990) > at ucar.nc2.dataset.NetcdfDataset.openOrAcquireFile(NetcdfDataset.java:711) > at ucar.nc2.dataset.NetcdfDataset.openDataset(NetcdfDataset.java:427) > at ucar.nc2.dataset.NetcdfDataset.acquireDataset(NetcdfDataset.java:528) > at ucar.nc2.dt.grid.GridDataset.open(GridDataset.java:117) > at ucar.nc2.dt.grid.GridDataset.open(GridDataset.java:103) > at > ucar.unidata.data.grid.GeoGridDataSource.doMakeDataSet(GeoGridDataSource.java:1182) > at > ucar.unidata.data.grid.GeoGridDataSource.getDataset(GeoGridDataSource.java:1204) > at > ucar.unidata.data.grid.GeoGridDataSource.initAfterCreation(GeoGridDataSource.java:507) > at ucar.unidata.data.DataManager.createDataSource(DataManager.java:1571) > at ucar.unidata.data.DataManager.createDataSource(DataManager.java:1335) > at ucar.unidata.data.DataManager.createDataSource(DataManager.java:1318) > at > ucar.unidata.idv.IntegratedDataViewer.loadDataFiles(IntegratedDataViewer.java:555) > at > ucar.unidata.idv.IntegratedDataViewer.initInner(IntegratedDataViewer.java:621) > at ucar.unidata.idv.IntegratedDataViewer$3.run(IntegratedDataViewer.java:531) > at ucar.unidata.util.Misc$3.run(Misc.java:1243) > > > Ticket Details =================== Ticket ID: ANC-176905 Department: Support IDV Priority: Normal Status: Closed