[Paraview] Creating ImageData w/Programmable Source

[Eric E. Monson]

Hello,

I'm having trouble creating vtkImageData with the Python Programmable  
Source. The PolyData Helix example works fine for me, but when I try  
to create ImageData it seems to build the data structure within Python  
(i.e. I can print the characteristics of the ImageData and it looks  
fine in the Output Messages), but no data shows in the Information tab  
or the 3d render view.

Here's the simplest case of the things I've tried (after selecting  
vtkImageData from the combo box):

pdo = self.GetImageDataOutput()
pdo.SetDimensions(10,10,10)
pdo.SetOrigin(0,0,0)
pdo.SetSpacing(1,1,1)
print pdo

I can add scalars to it, or create a new vtkImageData and then shallow  
or deep copy that over to the output, and those things look like  
they're working fine at the print statement, but they don't seem to  
help get the data to really show up in the pipeline.

I hope someone can just point out something I'm forgetting to do...
(PV 3.4 & CVS, OS X 10.5.6 & WinXP)

Thanks,
-Eric

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Eric E Monson
Duke Visualization Technology Group