[vtkusers] Contour of 3D Exodus Data

[Favre Jean]

There are a couple of issues with your example.

The Exodus reader creates a multi-block dataset, whose first block is itself a multi-block dataset (You can see that in ParaView's Information tab).

thus, your input should be:

contours.SetInputData(reader.GetOutput().GetBlock(0).GetBlock(0))

second, you need to tell contours which variable to use:

contours.SetInputArrayToProcess(0, 0, 0, 0, "u")

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Jean/CSCS
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