I've run into this problem where if I try to draw cross-sections on a
derived field (e.g., potential temperature) and try to load more than one
forecast time, the display will not appear and I get the following errors:
ERROR: Creating display: Color-Shaded Cross Section
java.lang.NullPointerException
java.lang.NullPointerException
at
ucar.unidata.data.grid.GridUtil.setSpatialDomain(GridUtil.java:353)
at
ucar.unidata.data.grid.GridUtil.setSpatialDomain(GridUtil.java:333)
at
ucar.unidata.idv.control.CrossSectionControl.make2DData(CrossSectionControl.java:1736)
at
ucar.unidata.idv.control.CrossSectionControl.loadData(CrossSectionControl.java:1582)
at
ucar.unidata.idv.control.CrossSectionControl.loadDataFromLine(CrossSectionControl.java:1566)
at
ucar.unidata.idv.control.CrossSectionControl.applySmoothing(CrossSectionControl.java:1613)
at
ucar.unidata.idv.control.DisplayControlImpl.applyAttributesToDisplayables(DisplayControlImpl.java:1517)
at
ucar.unidata.idv.control.DisplayControlImpl.init(DisplayControlImpl.java:1066)
at
ucar.unidata.idv.ControlDescriptor.initControl(ControlDescriptor.java:987)
at
ucar.unidata.idv.ControlDescriptor$1.run(ControlDescriptor.java:912)
at ucar.unidata.util.Misc$3.run(Misc.java:1089)
The problem also occurs with another derived field (Relative humidity),
and with different NWP models, so I suspect this may be a general problem
with "derived" quantitites. I've run this on both OSX and Linux
64-bit systems . . .
Thanks,
Kevin
______________________________________________________________________
Kevin Tyle, Systems Administrator **********************
Dept. of Atmospheric & Environmental Sciences ktyle@xxxxxxxxxxxxxxxx
University at Albany, ES-235 518-442-4578 (voice)
1400 Washington Avenue 518-442-5825 (fax)
Albany, NY 12222 **********************
______________________________________________________________________
