[vtkusers] vtkExodusIIReader usage

[Jochen]

Hi,


you can't use an object of type vtkMultiBlockDataSet as the direct input to
a filter or a unstructuredgird.
An object of type vtkMultiBlockDataSet consists of multiple blocks.
One of the blocks is a vtkUnstructuredGrid object (I assume it's the first
block)
Can't remember at the moment how to retrieve this unstructured grid.
Just have a look at the vtkMultiBlockDataSet object in your debugger.
Assuming your are using Microsoft Visual Studio you can also go to the
"Immediate Window" and type 

?yourVtkMultiBlockDataSet

This should help you to find the unstructured grid block and give you an
idea about how to retrieve it.

with best regards

Jochen

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