[Paraview] Filter to keep points, dropping topology

[Biddiscombe, John A.]

Output->SetPoints(input->GetPoints());

Or

Output->CopyStructure(input);
Output->SetCells(NULL)

Then copy point field data etc


On 22/10/14 16:19, "B.W.H. van Beest" <bwvb at xs4all.nl> wrote:

>Hello,
>
>I need a filter that only keeps the 3D points of a certain source (e.g.
>coming from  an stl file).
>The topology of the data set may go.
>
>I thought that the following filter, only passing through the pointdata,
>would do the job,
>but that appears not to be the case (no points after the filter!)
>What's going wrong and how should I change the filter?
>
>Kind Regards,
>Bertwim
>
>================
>
>int FilterPoints::RequestData( vtkInformation*,
>                                             vtkInformationVector**
>inputVector,
>                                             vtkInformationVector*
>outputVector)
>{
>   // Get the input and output data objects.
>   vtkDataSet* input = vtkDataSet::GetData( inputVector[0] );
>   vtkDataSet* output = vtkDataSet::GetData( outputVector );
>
>   // output->CopyStructure( input );
>   output->GetPointData()->PassData( input->GetPointData() );
>  
>   return 1;
>}
>
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