NullPointer exception

Bill,

  Here is the jdb output when changing the Display.RGB for
the field3d data to Display.IsoContour in line 105 of my code:

jdb WXView ./dx/mlkdata/t02a_010_06_00_1025_TMP
Initializing jdb...
0xad:class(WXView)
> run
run WXView ./dx/mlkdata/t02a_010_06_00_1025_TMP
running ...
main[1] numVAls= 69120 val = 17280
FunctionType: (time) -> FunctionType (Real): (row, column, level) ->
(temperature)

Current thread "main" died. Execution continuing...
>
Uncaught exception: java.lang.NullPointerException
        at visad.Irregular2DSet.makeSpatial(Irregular2DSet.java:157)
        at visad.ShadowType.assembleSpatial(ShadowType.java:1450)
        at
visad.java2d.ShadowTypeJ2D.assembleSpatial(ShadowTypeJ2D.java:234)
        at
visad.java2d.ShadowFunctionOrSetTypeJ2D.doTransform(ShadowFunctionOrSetTypeJ2D.java:674)

        at
visad.java2d.ShadowFunctionOrSetTypeJ2D.doTransform(ShadowFunctionOrSetTypeJ2D.java:1365)

        at
visad.java2d.DefaultRendererJ2D.doTransform(DefaultRendererJ2D.java:83)
        at visad.java2d.RendererJ2D.doAction(RendererJ2D.java:119)
        at visad.DisplayImpl.doAction(DisplayImpl.java:515)
        at visad.java2d.DisplayImplJ2D.doAction(DisplayImplJ2D.java:239)

        at visad.ActionImpl.run(ActionImpl.java:165)
        at java.lang.Thread.run(Thread.java:479)

Thread-1[1]

KathyLee.