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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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: Paul Graham > Email Address: address@hidden > Organization: Weathersim > Package Version: 4.1u1 build date:2013-09-25 07:05 UTC > Operating System: Linux > Hardware: Java: home: /usr/local/bin/IDV_4.1u1/jre version: 1.6.0_41 > j3d:1.5.2 fcs (build4) > Description of problem: Not sure as to why the IDV gives this error when > trying to use the exponential function on a field: > > Creating display: Color-Filled Contour Plan View > visad.UnitException: visad.UnitException: FlatField: RangeUnits must be > convertable with RangeType default Units > FlatField: RangeUnits must be convertable with RangeType default Units Paul, Could you provide us the formula you were trying? Yuan > > ****************** > Stack trace: > visad.UnitException: FlatField: RangeUnits must be convertable with RangeType > default Units > at visad.FlatField.<init>(FlatField.java:412) > at visad.FlatField.cloneFloat(FlatField.java:5605) > at visad.FlatField.unary(FlatField.java:3744) > at visad.FieldImpl.unary(FieldImpl.java:906) > at visad.DataImpl.unary(DataImpl.java:485) > at visad.DataImpl.exp(DataImpl.java:662) > at visad.python.JPythonMethods.exp(JPythonMethods.java:942) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) > at java.lang.reflect.Method.invoke(Unknown Source) > at org.python.core.PyReflectedFunction.__call__(PyReflectedFunction.java:186) > at org.python.core.PyReflectedFunction.__call__(PyReflectedFunction.java:204) > at org.python.core.PyObject.__call__(PyObject.java:387) > at org.python.core.PyObject.__call__(PyObject.java:391) > at org.python.pycode._pyx283.hailRiskII$15(<string>:240) > at org.python.pycode._pyx283.call_function(<string>) > at org.python.core.PyTableCode.call(PyTableCode.java:165) > at org.python.core.PyBaseCode.call(PyBaseCode.java:149) > at org.python.core.PyFunction.__call__(PyFunction.java:327) > at org.python.pycode._pyx285.f$0(<string>:1) > at org.python.pycode._pyx285.call_function(<string>) > at org.python.core.PyTableCode.call(PyTableCode.java:165) > at org.python.core.PyCode.call(PyCode.java:18) > at org.python.core.Py.runCode(Py.java:1261) > at org.python.core.__builtin__.eval(__builtin__.java:484) > at org.python.core.__builtin__.eval(__builtin__.java:488) > at org.python.util.PythonInterpreter.eval(PythonInterpreter.java:190) > at ucar.unidata.data.DerivedDataChoice.getData(DerivedDataChoice.java:787) > 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:284) > at > ucar.unidata.idv.control.DisplayControlImpl.initializeDataInstance(DisplayControlImpl.java:3224) > at > ucar.unidata.idv.control.DisplayControlImpl.setData(DisplayControlImpl.java:3206) > at ucar.unidata.idv.control.PlanViewControl.setData(PlanViewControl.java:641) > at > ucar.unidata.idv.control.ContourPlanViewControl.setData(ContourPlanViewControl.java:194) > at ucar.unidata.idv.control.PlanViewControl.init(PlanViewControl.java:471) > at > ucar.unidata.idv.control.DisplayControlImpl.init(DisplayControlImpl.java:1421) > at > ucar.unidata.idv.control.DisplayControlImpl.init(DisplayControlImpl.java:1106) > 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:1251) > > > Ticket Details =================== Ticket ID: JBN-701347 Department: Support IDV Priority: Normal Status: Open