[vtkusers] How to extract cells and points from unstructuredGrid based on integer cell data?

[scotsman60]

Hello.

I'm a vtk newbie......and I have an unstructureGrid consisting of many
different cell types and each cell has some associated integer cell data.

>From the unstructureGrid I want to create a new unstructuredGrid (Cells and
points) consisting of only those cells that have a particular cellData value 

What is the recommended strategy for achiving this goal?

I'm currently pursuing a solution based on vtkThreshold - is this the right
approach or is there a better onw?


Thanx in advance,


Doug



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