# How to Obtain the coordinates of the corresponding values on the line

**URL:** https://discourse.paraview.org/t/how-to-obtain-the-coordinates-of-the-corresponding-values-on-the-line/11820
**Category:** ParaView Support
**Tags:** vtk
**Created:** [April 6, 2023, 9:38am UTC](https://discourse.paraview.org/t/how-to-obtain-the-coordinates-of-the-corresponding-values-on-the-line/11820 "2023-04-06T09:38:13Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![potato](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/p/a6a055/32.png) [@potato](https://discourse.paraview.org/u/potato)
#### Post date: [April 6, 2023, 9:38am UTC](https://discourse.paraview.org/t/how-to-obtain-the-coordinates-of-the-corresponding-values-on-the-line/11820/1 "2023-04-06T09:38:13Z")

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Hi everyone! I get a data structure like this. The contour (pf=0) move with the growth of time.I have plot its change along a specific direction. The result is like this.And I want to know the value(pf=0)'s coordinate in every frame alongt this direction. How should I do？Thanks a lot!

 ![43cd355d3ac830a7bb81866c01dff08](https://discourse.paraview.org/uploads/default/original/2X/6/6f15826705340140f7453561b83e51cbb3f0cd75.jpeg)

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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: [April 6, 2023, 12:15pm UTC](https://discourse.paraview.org/t/how-to-obtain-the-coordinates-of-the-corresponding-values-on-the-line/11820/2 "2023-04-06T12:15:58Z")

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It looks like you are already applying the `Contour` filter to the output of `Plot Over Line` to find the point where pf=0. You can see the coordinates of that point (as well as any other fields at that location) by viewing it in a [spreadsheet view](https://docs.paraview.org/en/latest/Tutorials/ClassroomTutorials/advancedDataAnalysis.html#spreadsheet-and-histogram-view).

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### Author: ![potato](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/p/a6a055/32.png) [@potato](https://discourse.paraview.org/u/potato)
#### Post date: [April 6, 2023, 12:20pm UTC](https://discourse.paraview.org/t/how-to-obtain-the-coordinates-of-the-corresponding-values-on-the-line/11820/3 "2023-04-06T12:20:45Z")

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Thanks for your replying. I want to export the data from every frame into one file(for example .csv).Is there any way to do this?

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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 7, 2023, 7:12am UTC](https://discourse.paraview.org/t/how-to-obtain-the-coordinates-of-the-corresponding-values-on-the-line/11820/4 "2023-04-07T07:12:37Z")

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Hi @potato

You could add an CSV extractor.

Best,