# Query on using paraview.simple.VortexCores

**URL:** https://discourse.paraview.org/t/query-on-using-paraview-simple-vortexcores/7538
**Category:** ParaView Support
**Tags:** python
**Created:** [July 2, 2021, 5:14pm UTC](https://discourse.paraview.org/t/query-on-using-paraview-simple-vortexcores/7538 "2021-07-02T17:14:06Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![vcn\_cfd](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/v/91b2a8/32.png) [@vcn\_cfd](https://discourse.paraview.org/u/vcn_cfd)
#### Post date: [July 2, 2021, 5:14pm UTC](https://discourse.paraview.org/t/query-on-using-paraview-simple-vortexcores/7538/1 "2021-07-02T17:14:06Z")

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Hello,

Could someone please tell me 1) what the inputs should be, and 2) How the parameter arguments are passed for the vortex cores function shown below:

`paraview.simple.` `VortexCores` (\*_input_ , \*\*_params_ )

Also, is this found as a filter or plugin in the Paraview GUI itself ? if so could someone please direct me to the location.

Thank you,  
VCN.

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### Author: ![Kenneth\_Moreland](https://discourse.paraview.org/user_avatar/discourse.paraview.org/kenneth_moreland/32/15033_2.png) [@Kenneth\_Moreland](https://discourse.paraview.org/u/Kenneth_Moreland)
#### Post date: [July 2, 2021, 5:53pm UTC](https://discourse.paraview.org/t/query-on-using-paraview-simple-vortexcores/7538/2 "2021-07-02T17:53:45Z")

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There is a filter in ParaView named `Vortex Cores`. All filters in ParaView have a corresponding Python function of the same name.

It sounds like you are jumping into the ParaView scripting very fast. I would recommend playing with the ParaView GUI first and trying the `Start Trace` / `Stop Trace` to demonstrate how to use these functions in the Python bindings.

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### Author: ![vcn\_cfd](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/v/91b2a8/32.png) [@vcn\_cfd](https://discourse.paraview.org/u/vcn_cfd)
#### Post date: [July 2, 2021, 6:20pm UTC](https://discourse.paraview.org/t/query-on-using-paraview-simple-vortexcores/7538/3 "2021-07-02T18:20:54Z")

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Thank you for responding so quickly! I am using Paraview 5.6 (for reasons) and the reason why I went into the trying python scripting is because the Vortex Cores filter doesn’t show up in my filters list.

 ![Screen Shot 2021-07-02 at 1.17.54 PM](https://discourse.paraview.org/uploads/default/original/2X/9/991496d93d49f8ce752f3a63c7cc6d2e2377bac4.jpeg)  
 ![Screen Shot 2021-07-02 at 1.18.16 PM](https://discourse.paraview.org/uploads/default/original/2X/1/107839a44a08808723bcdb2235f32e78303cfa71.png)

Any insights on what could be causing the omission ? Is there a plugin that I have to load before it shows up in the filters list ? or Should I upgrade to the laster version ?

Thank you,  
VCN.

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### Author: ![cory.quammen](https://discourse.paraview.org/user_avatar/discourse.paraview.org/cory.quammen/32/11193_2.png) [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)
#### Post date: [July 2, 2021, 6:41pm UTC](https://discourse.paraview.org/t/query-on-using-paraview-simple-vortexcores/7538/4 "2021-07-02T18:41:55Z")

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The Vortex Cores filter was not added until ParaView 5.8, as I recall. Maybe 5.7.

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### Author: ![vcn\_cfd](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/v/91b2a8/32.png) [@vcn\_cfd](https://discourse.paraview.org/u/vcn_cfd)
#### Post date: [July 2, 2021, 6:47pm UTC](https://discourse.paraview.org/t/query-on-using-paraview-simple-vortexcores/7538/5 "2021-07-02T18:47:33Z")

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Thank you so much! That pretty much answers my question. I had an inkling that it might just be feature not included in 5.6 but was hesitant to upgrade; Apologies for asking a trivial question.

VCN.