# Muktiple options in scalars field in threshold

**URL:** https://discourse.paraview.org/t/muktiple-options-in-scalars-field-in-threshold/10297
**Category:** ParaView Support
**Tags:** ttk
**Created:** [September 13, 2022, 2:02am UTC](https://discourse.paraview.org/t/muktiple-options-in-scalars-field-in-threshold/10297 "2022-09-13T02:02:11Z")
**Posts on this page:** 6
**Page:** 1

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### Author: ![Pravin\_Poudel](https://discourse.paraview.org/user_avatar/discourse.paraview.org/pravin_poudel/32/9830_2.png) [@Pravin\_Poudel](https://discourse.paraview.org/u/Pravin_Poudel)
#### Post date: [September 13, 2022, 2:02am UTC](https://discourse.paraview.org/t/muktiple-options-in-scalars-field-in-threshold/10297/1 "2022-09-13T02:02:11Z")

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I am still trying to understand and figure out how to use ttk in paraview.

In the video i am waitching which is video created by paraview itself, sometime narrator is selecting scalars as pairidentifier, sometime persistance and sometime pairtype.

 ![image](https://discourse.paraview.org/uploads/default/original/2X/a/a0651df0586712235d9b4e74fbb1933a214299c0.jpeg)

can you please help me understand what are they and when are they used for what case.

Thank you

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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: [September 13, 2022, 2:22am UTC](https://discourse.paraview.org/t/muktiple-options-in-scalars-field-in-threshold/10297/2 "2022-09-13T02:22:18Z")

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@Charles_Gueunet @julien-tierny

(Do we need a TTK section ? serious suggestion @cory.quammen 🙂 )

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### Author: ![Pravin\_Poudel](https://discourse.paraview.org/user_avatar/discourse.paraview.org/pravin_poudel/32/9830_2.png) [@Pravin\_Poudel](https://discourse.paraview.org/u/Pravin_Poudel)
#### Post date: [September 13, 2022, 2:23am UTC](https://discourse.paraview.org/t/muktiple-options-in-scalars-field-in-threshold/10297/3 "2022-09-13T02:23:43Z")

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i am sorry, did i do mistake by posting this question?

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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: [September 13, 2022, 2:24am UTC](https://discourse.paraview.org/t/muktiple-options-in-scalars-field-in-threshold/10297/4 "2022-09-13T02:24:42Z")

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No, it’s ok @Pravin_Poudel 🙂

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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: [September 13, 2022, 10:57am UTC](https://discourse.paraview.org/t/muktiple-options-in-scalars-field-in-threshold/10297/5 "2022-09-13T10:57:11Z")

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I created a tag `ttk`. Maybe that would be enough?

Otherwise, I think we could have a sub-category for TTK under ParaView Support. I don’t think it rises to the level of a top-level category. We could have other subcategories as well potentially - see how the Slicer community does subcategories: [https://discourse.slicer.org/](https://discourse.slicer.org/).

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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: [September 13, 2022, 10:59am UTC](https://discourse.paraview.org/t/muktiple-options-in-scalars-field-in-threshold/10297/6 "2022-09-13T10:59:14Z")

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Sounds good. ttk tag should be enough for now.