blueprint csv export will export unused points

[cyrush]

Describe the bug

I created a boundary plot and exported to blueprint csv.
In the vertex data output, the original vertices are there as well.
This is likely because the dataset was not cleaned (original points are still attached to the dataset, and the new ones were appended)

boundaries vs vertex data:

boundaries vs element data:

Helpful additional information

• Did VisIt crash:
• Did you get wrong results:

To Reproduce

Create a boundary plot of mat1 for rect2d.silo, export to Blueprint with Flatten_CSV option.

Desktop

• OS and version: toss4 and macOS
• VisIt Version: 3.4.2

[JustinPrivitera]

is this unique to blueprint? I would guess this would be an issue with all of our exports.

[cyrush]

I don't think so, but we could mitigate with a clean points filter. I think that's the right solution for Blueprint and maybe for all other cases as well.

[biagas]

VisIt has a couple of filters (vtkUnstructuredGridRelevantPointsFilter and vtkPolyDataRelevantPointsFilter) that will remove points not associated with any cells. It is called by avtCondenseDatasetFilter and uses a heuristic (which can be bypassed) to determine whether or not to use the filters. avtCondenseDatasetFilter is used by avtPlot during its "ReduceGeometry" function. The individual vtk filters are also used in various places where it is important to remove the unused points. @cyrush is this what you were thinking of ?

[cyrush]

@biagas yes, exactly

[cyrush]

We should do this for all exports.