[vtkusers] Temporal Interpolation Assistance with VTK7 in Python

[Slaughter, Andrew E]

On Wed, Mar 22, 2017 at 8:20 AM, David Thompson <david.thompson at kitware.com>
wrote:

> Hi Andrew,
>
> > I am hoping someone could point me in the right direction for the
> following problem. I have two ExodusII files (read using vtkExodusIIReader)
> each file contains several timesteps from a complete simulation.
> >
> > I would like to utilize vtkTemporalInterpolator to allow for any
> timestep within the range of the timesteps in the files to be rendered.
> >
> > Is this possible using VTK python bindings? If so, I would appreciate
> being pointed in the correct direction for implementing this sort of tool.
>
> I don't know whether the Exodus reader itself or the FileSeries reader
> does it, but one of the two should identify the files as a time-sequence.


The ExodusReader does not do anything with time sequences. Paraview creates
a FileSeries, but I need to do this without Paraview.

Note that usually Exodus time-series are broken into multiple files at
> steps where mesh adaptation occurs. Time *interpolation* (i.e., generating
> a mesh at a time between 2 saved steps) cannot take place at this boundary
> since there's no registration between the meshes.
>

This is good to know, you probably saved me a bunch of time trying to get
that aspect to work. However, I would like to take advantage of
vtkTemporalDataSetCache
across the files, if possible.

>
>
        David
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