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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
How big are the files you are working with? Would it be possible to supply us with a sample for testing purpose? If so, please feel free to upload a sample file here: http://motherlode.ucar.edu/repository/entry/show/RAMADDA/Unidata/Software/IDV/Support+Uploads Cheers! Sean > I am trying to show derived wind speed (from U &V) shaded over topography > with SFC pressure contour has topography from a WRF-ARW output file. I > think it might have something to do with my pressure levels? > > > address@hidden> wrote: > > > Greetings! > > > > The error indicates that you hadn't selected any a field to contour - were > > you using a formula? I've found that it is easy to miss selecting a field > > in the pop-up box when you use a formula. Can you tell me a little bit > > about what you were trying to contour? > > > > Cheers! > > > > Sean > > > > > Full Name: Washington > > > Email Address: address@hidden > > > Organization: student college > > > Package Version: 3.0u2 build date:2012-02-10 17:21 UTC > > > Operating System: Mac OS X > > > Hardware: Java: home: > > /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home version: > > 1.6.0_31 j3d:1.5.2 fcs (build4) > > > Description of problem: I receive an error when trying to do contours > > either 2D and 3D. > > > > > > java.lang.IllegalStateException: No data selected > > > at > > ucar.unidata.idv.ui.IdvUIManager.selectDataChoices(IdvUIManager.java:5574) > > > at > > ucar.unidata.idv.IntegratedDataViewer.selectDataChoices(IntegratedDataViewer.java:1016) > > > at > > ucar.unidata.data.DerivedDataChoice.collectOperands(DerivedDataChoice.java:549) > > > at > > ucar.unidata.data.DerivedDataChoice.getData(DerivedDataChoice.java:724) > > > 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.grid.GridDataInstance.init(GridDataInstance.java:205) > > > at > > ucar.unidata.data.grid.GridDataInstance.<init>(GridDataInstance.java:162) > > > at > > ucar.unidata.data.grid.GridDataInstance.<init>(GridDataInstance.java:143) > > > at > > ucar.unidata.idv.control.GridDisplayControl.doMakeDataInstance(GridDisplayControl.java:284) > > > at > > ucar.unidata.idv.control.DisplayControlImpl.initializeDataInstance(DisplayControlImpl.java:3153) > > > at > > ucar.unidata.idv.control.DisplayControlImpl.setData(DisplayControlImpl.java:3135) > > > at > > ucar.unidata.idv.control.PlanViewControl.setData(PlanViewControl.java:643) > > > at > > ucar.unidata.idv.control.ContourPlanViewControl.setData(ContourPlanViewControl.java:194) > > > at > > ucar.unidata.idv.control.PlanViewControl.init(PlanViewControl.java:473) > > > at > > ucar.unidata.idv.control.DisplayControlImpl.init(DisplayControlImpl.java:1402) > > > at > > ucar.unidata.idv.control.DisplayControlImpl.init(DisplayControlImpl.java:1085) > > > 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) > > > > > > > > > > > > > > > Ticket Details > > =================== > > Ticket ID: VBT-615352 > > Department: Support IDV > > Priority: Normal > > Status: Open > > > > > > > -- > Travis Washington > Doctoral Student > Department of Marine & Environmental Systems > Florida Institute of Technology > 150 W University Blvd. > Melbourne, FL 32901 > Ph: 850-524-0532 > > Ticket Details =================== Ticket ID: VBT-615352 Department: Support IDV Priority: Normal Status: Open