My bad ... the NullPointerException is at this line :
>>>>>> floop.setFlowScale(0.1f); <<<<<<<<<<<<<
of
ScalarMap flow1XMap = new ScalarMap(uType, Display.Flow1X);
flow1XMap.setRange(-40.0, 40.0);
FlowControl floop = (FlowControl)flow1XMap.getControl();
floop.setFlowScale(0.1f);
The rest of the stack trace is just Swing stuff...
I know there's good data in there, because if I don't make that call,
then the data renders correctly (although small), so I can't work out
why the returned flowcontrol might be null...
Let me know anything else you need.
Cheers,
-T
On Tue, 2003-12-02 at 21:19, Bill Hibbard wrote:
> Hi Tennessee,
>
> > I'm having some hassles with BarbRendererJ3D. Essentially, the barbs are
> > too small. calling setRange against the flow1X and flow1Y scalarmaps
> > helped a little, but not nearly enough. I then tried to use the
> > setFlowScale of FlowControl in order to increase the size of the barbs.
> > However, what I get is a NullPointerException, caused by the call to
> > setFlowScale, occurring somewhere in VisAD.
> >
> >
> > ScalarMap flow1XMap = new ScalarMap(uType, Display.Flow1X);
> > flow1XMap.setRange(-40.0, 40.0);
> > //((FlowControl)flow1XMap.getControl()).setFlowScale(0.1f);
> > FlowControl floop = (FlowControl)flow1XMap.getControl();
> > floop.setFlowScale(0.1f);
> >
> > Is a FlowControl the right way to enlarge the wind barbs?
>
> That's the right way. Can you send us a stack dump with
> line numbers for the NullPointerException?
>
> Cheers,
> Bill
> p.s., send to visad-list@xxxxxxxxxxxxxxxx
>
>
