# AngularPeriodicFilter order of application

**URL:** https://discourse.paraview.org/t/angularperiodicfilter-order-of-application/11399
**Category:** ParaView Support
**Created:** [February 14, 2023, 9:15am UTC](https://discourse.paraview.org/t/angularperiodicfilter-order-of-application/11399 "2023-02-14T09:15:14Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Rigel](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/r/8e7dd6/32.png) [@Rigel](https://discourse.paraview.org/u/Rigel)
#### Post date: [February 14, 2023, 9:15am UTC](https://discourse.paraview.org/t/angularperiodicfilter-order-of-application/11399/1 "2023-02-14T09:15:14Z")

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Hi,

I have a question about the performance of applying filters in ParaView. Suppose I have a set of 3D CFD data with periodic boundary conditions and I want to apply a contour or streamlines filter to it, showing the whole (360º) domain. Does it make any difference – from the point of view of performance – to apply the `AngularPeriodicFilter` and then the contour/streamlines when compared to first the contour/streamlines and then the `AngularPeriodicFilter`?

Thanks a lot,

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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: [February 14, 2023, 9:27am UTC](https://discourse.paraview.org/t/angularperiodicfilter-order-of-application/11399/2 "2023-02-14T09:27:58Z")

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For performance, you definitely want to contour first, then periodic filter.