[Paraview] Getting original node's id's

[Rafael March]

Hey Paraview Community,
 
I have a filter that receives an UnstructuredGrid as input, and associates an integer number (according to some rule, of course) to each Point of the mesh. So, I can use the Threshold filter to separate a piece of my model from the rest (for instance, I can filter my model in order to show only the nodes whose integer number is 6). The problem is, when I use this filter, Paraview atributtes new id's to the nodes. I would like to maintain the original numbers !
 
Does anybody know how to solve this problem ? I thought that I might store the point's memory address so that I can walk through the pipeline later and recover the id, but I don't think Paraview maintain these addresses either.
 
Thanks in advance.
 
Rafael March.


      
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