[Paraview] Can ParaView create "envelope" or cumulative maximums?

[Favre Jean]

Incidentally, I tried to achieve this with a Python programmable filter since that was Alan's question.

I did not succeed.  I am removing the TIME_STEPS() and TIME_RANGE() in the  RequestInformationScript script. I am setting a different UPDATE_TIME_STEP() at each iteration of the RequestUpdateExtentScript. I am setting CONTINUE_EXECUTING() in the main Script, but ParaView just does not loop after the first iteration.

I have the feeling I am not setting CONTINUE_EXECUTING on the right object. Question:

how does one get the request object from the executive? When I look at C code, I see

int vtkTemporalStatistics::RequestData(vtkInformation *request,
                                       vtkInformationVector **inputVector,
                                       vtkInformationVector *outputVector)
{
...
request->Set(vtkStreamingDemandDrivenPipeline::CONTINUE_EXECUTING(), 1)
...
}

What is the equivalent in Python within a ProgrammableFilter()?

Jean/CSCS
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