[Paraview] Getting original node's id's

[Dominik Szczerba]

- quick and dirty: keep original ids as a scalar point data
- elegant: use kd-tree search to find the original ids
- Dominik

On Monday 15 September 2008 03:59:50 pm Rafael March wrote:
> 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.



-- 
Dominik Szczerba, Ph.D.
Computational Physics Group
Foundation for Research on Information Technologies in Society
http://www.itis.ethz.ch