# When time is changed, how is it passed to filters?

**URL:** https://discourse.paraview.org/t/when-time-is-changed-how-is-it-passed-to-filters/14319
**Category:** Development
**Created:** [April 2, 2024, 1:29pm UTC](https://discourse.paraview.org/t/when-time-is-changed-how-is-it-passed-to-filters/14319 "2024-04-02T13:29:03Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![joint](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/j/dc4da7/32.png) [@joint](https://discourse.paraview.org/u/joint)
#### Post date: [April 2, 2024, 1:29pm UTC](https://discourse.paraview.org/t/when-time-is-changed-how-is-it-passed-to-filters/14319/1 "2024-04-02T13:29:03Z")

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Hello!

I have a dataset of several frames, what exactly happens when I switch from one frame to another?

Is time a property?

Thanks!

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [April 2, 2024, 1:58pm UTC](https://discourse.paraview.org/t/when-time-is-changed-how-is-it-passed-to-filters/14319/2 "2024-04-02T13:58:30Z")

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Time is not a property, time is controlled by information key and the readers are responsible to respect it.

[https://www.kitware.com/a-vtk-pipeline-primer-part-1/](https://www.kitware.com/a-vtk-pipeline-primer-part-1/)