Temporal derivative

[ebreard]

Hi,

I have velocity field data, is there a way to use existing filters to calculate the acceleration field?

[mwestphal (Mathieu Westphal (Kitware))]

HI @ebreard

This is possible but way complex than it should be.

If the timesteps progression is linear (eg: 0.1, 0.2, 0.3), you can use TemporalShiftScale to shift your timesteps and then PythonCalculator to compare between timesteps and do the computation.

If not, then it can only be done one timestep at a time, using ForceTime or TemporalArrayOperator.

Hth,

[ebreard]

Thanks, is there no plan to add this as a filter? Lots of folks would be using it

[mwestphal (Mathieu Westphal (Kitware))]

Not yet, one would need to invest some time or funding in order to get this going.

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