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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
Hi Kevin- > Institution: NSSL > Package Version: 2.3 build date:2007-08-15 19:04 UTC > Operating System: Windows XP > Hardware Information: Java: home: C:\\Program Files\\IDV_2.3\\jre version: > 1.5.0_11 j3d:1.3.2 fcs (build12) > Inquiry: During the Regional Workshop I tried "sliding" the "Z - Contour Plan > View" with a left mouse click and got the following error. > > Just an minor bug/FYI. Just fixed this last week so it's in our nightly build release. The problem is that you can't slice through the volume at a height level when you've only downloaded one level of data. The fix was to hide the selector in that case. ;-) Don > > An error has occurred: > > Attempt to convert from unit "m" to unit "Pa" > visad.UnitException: Attempt to convert from unit "m" to unit "Pa" > at visad.DerivedUnit.toThis(DerivedUnit.java:897) > at visad.DerivedUnit.toThis(DerivedUnit.java:799) > at visad.BaseUnit.toThat(BaseUnit.java:689) > at visad.ScaledUnit.toThis(ScaledUnit.java:401) > at visad.Unit.toThis(Unit.java:807) > at visad.Real.getValue(Real.java:289) > at > ucar.unidata.data.grid.GeoGridDataSource.indexOf(GeoGridDataSource.java:1049) > at > ucar.unidata.data.grid.GeoGridDataSource.makeFieldImpl(GeoGridDataSource.java:1089) > at > ucar.unidata.data.grid.GeoGridDataSource.getDataInner(GeoGridDataSource.java:904) > at ucar.unidata.data.DataSourceImpl.getData(DataSourceImpl.java:1642) > at ucar.unidata.data.DirectDataChoice.getData(DirectDataChoice.java:324) > at ucar.unidata.data.DataChoice.getData(DataChoice.java:581) > at ucar.unidata.data.DataInstance.getData(DataInstance.java:239) > at ucar.unidata.data.DataInstance.getData(DataInstance.java:203) > at ucar.unidata.data.grid.GridDataInstance.init(GridDataInstance.java:204) > at ucar.unidata.data.DataInstance.reInitialize(DataInstance.java:170) > at > ucar.unidata.data.grid.GridDataInstance.reInitialize(GridDataInstance.java:179) > at > ucar.unidata.idv.control.PlanViewControl.setLevelFromUser(PlanViewControl.java:748) > at > ucar.unidata.idv.control.PlanViewControl.loadDataAtZ(PlanViewControl.java:999) > at > ucar.unidata.idv.control.PlanViewControl.propertyChange(PlanViewControl.java:359) > at > java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:333) > at > java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:341) > at > java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:270) > at ucar.visad.display.Displayable.firePropertyChange(Displayable.java:1003) > at > ucar.visad.display.SelectorDisplayable.notifyListenersOfMove(SelectorDisplayable.java:181) > at ucar.visad.display.ZSelector$1.doAction(ZSelector.java:139) > at visad.ActionImpl.run(ActionImpl.java:364) > at visad.util.ThreadPool$ThreadMinnow.run(ThreadPool.java:95) > > > > ****************** > Stack trace: > visad.UnitException: Attempt to convert from unit "m" to unit "Pa" > at visad.DerivedUnit.toThis(DerivedUnit.java:897) > at visad.DerivedUnit.toThis(DerivedUnit.java:799) > at visad.BaseUnit.toThat(BaseUnit.java:689) > at visad.ScaledUnit.toThis(ScaledUnit.java:401) > at visad.Unit.toThis(Unit.java:807) > at visad.Real.getValue(Real.java:289) > at > ucar.unidata.data.grid.GeoGridDataSource.indexOf(GeoGridDataSource.java:1049) > at > ucar.unidata.data.grid.GeoGridDataSource.makeFieldImpl(GeoGridDataSource.java:1089) > at > ucar.unidata.data.grid.GeoGridDataSource.getDataInner(GeoGridDataSource.java:904) > at ucar.unidata.data.DataSourceImpl.getData(DataSourceImpl.java:1642) > at ucar.unidata.data.DirectDataChoice.getData(DirectDataChoice.java:324) > at ucar.unidata.data.DataChoice.getData(DataChoice.java:581) > at ucar.unidata.data.DataInstance.getData(DataInstance.java:239) > at ucar.unidata.data.DataInstance.getData(DataInstance.java:203) > at ucar.unidata.data.grid.GridDataInstance.init(GridDataInstance.java:204) > at ucar.unidata.data.DataInstance.reInitialize(DataInstance.java:170) > at > ucar.unidata.data.grid.GridDataInstance.reInitialize(GridDataInstance.java:179) > at > ucar.unidata.idv.control.PlanViewControl.setLevelFromUser(PlanViewControl.java:748) > at > ucar.unidata.idv.control.PlanViewControl.loadDataAtZ(PlanViewControl.java:999) > at > ucar.unidata.idv.control.PlanViewControl.propertyChange(PlanViewControl.java:359) > at > java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:333) > at > java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:341) > at > java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:270) > at ucar.visad.display.Displayable.firePropertyChange(Displayable.java:1003) > at > ucar.visad.display.SelectorDisplayable.notifyListenersOfMove(SelectorDisplayable.java:181) > at ucar.visad.display.ZSelector$1.doAction(ZSelector.java:139) > at visad.ActionImpl.run(ActionImpl.java:364) > at visad.util.ThreadPool$ThreadMinnow.run(ThreadPool.java:95) > > > Ticket Details =================== Ticket ID: WSU-152982 Department: Support IDV Priority: Normal Status: Closed