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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
> Full Name: JP Kalb > Email Address: address@hidden > Organization: SJSU > Package Version: 5.0u1 build date:2014-08-08 16:54 UTC > Operating System: Windows 7 > Hardware: Java: home: C:\Users\metr166\IDV_5.0u1\jre version: 1.7.0_51 > j3d:1.6.0-pre9-daily-experimental daily > Description of problem: Creating display: Contour Plan View > Unknown return value type:org.python.core.PySingleton > Value=Error > Code:haines(t950,t850,d850) > I got this error using this code > t95=make2D(noUnit(t950)) > t85=make2D(noUnit(t850)) > d85=make2D(noUnit(d850)) > deltat=t95-t85 > dpp=t85-d85 > if deltat<4: > s=1 > elif 4<=deltat<8: > s=2 > else: > s=3 > if dpp<6: > m=1 > elif 6<=dpp<10: > m=2 > else: > m=3 > h=m+s > return h > what is the problem with this code? > The IDV can only take VisAD type in its formula return, and the variable h is not a valid type. We do have workshop here for you to learn more in depth knowledge. Yuan > ****************** > Stack trace: > java.lang.IllegalArgumentException: Unknown return value > type:org.python.core.PySingleton > Value=Error > Code:haines(t950,t850,d850) > at ucar.unidata.data.DerivedDataChoice.getData(DerivedDataChoice.java:821) > 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:206) > at ucar.unidata.data.grid.GridDataInstance.<init>(GridDataInstance.java:163) > at ucar.unidata.data.grid.GridDataInstance.<init>(GridDataInstance.java:144) > at > ucar.unidata.idv.control.GridDisplayControl.doMakeDataInstance(GridDisplayControl.java:299) > at > ucar.unidata.idv.control.DisplayControlImpl.initializeDataInstance(DisplayControlImpl.java:3278) > at > ucar.unidata.idv.control.DisplayControlImpl.setData(DisplayControlImpl.java:3234) > at ucar.unidata.idv.control.PlanViewControl.setData(PlanViewControl.java:664) > at > ucar.unidata.idv.control.ContourPlanViewControl.setData(ContourPlanViewControl.java:195) > at ucar.unidata.idv.control.PlanViewControl.init(PlanViewControl.java:489) > 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:1243) > > > Ticket Details =================== Ticket ID: JMH-197775 Department: Support IDV Priority: Normal Status: Closed