# Exporting .csv data from a surface at a particular point in time

**URL:** https://discourse.paraview.org/t/exporting-csv-data-from-a-surface-at-a-particular-point-in-time/2963
**Category:** ParaView Support
**Created:** [November 12, 2019, 6:45pm UTC](https://discourse.paraview.org/t/exporting-csv-data-from-a-surface-at-a-particular-point-in-time/2963 "2019-11-12T18:45:51Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![ramos](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/r/ecd19e/32.png) [@ramos](https://discourse.paraview.org/u/ramos)
#### Post date: [November 12, 2019, 6:45pm UTC](https://discourse.paraview.org/t/exporting-csv-data-from-a-surface-at-a-particular-point-in-time/2963/1 "2019-11-12T18:45:51Z")

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Hello,

I am attempting to export x location, y location, and data point (x,y) from a surface (.xdmf file format) at a particular time step for further analysis or plotting in python, matlab, r, etc.

Attached is a screenshot of the data I want.

 ![49%20PM](https://discourse.paraview.org/uploads/default/original/2X/4/4d8cc69bb0b8effc2a886902eb5dd72bd2111927.jpeg) It is a surface of colored values and it is at the final time step. I have attempted the Data Analysis tools tab with no success.

any advice is greatly appreciated.

thanks,

Marlon Ramos

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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: [November 13, 2019, 6:58am UTC](https://discourse.paraview.org/t/exporting-csv-data-from-a-surface-at-a-particular-point-in-time/2963/2 "2019-11-13T06:58:04Z")

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Are you looking for the `Probe` filter ?

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### Author: ![ramos](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/r/ecd19e/32.png) [@ramos](https://discourse.paraview.org/u/ramos)
#### Post date: [November 15, 2019, 4:47pm UTC](https://discourse.paraview.org/t/exporting-csv-data-from-a-surface-at-a-particular-point-in-time/2963/3 "2019-11-15T16:47:07Z")

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Yes!

But I am unclear how to use it.

I’ve attempted to select points within a polygon, but the magnitudes, which should correspond to surface variable W, are way to large. So I am unclear as to what the “Points” and “Points Magnitude” actually correspond to.

See attached screenshots.

 ![29%20AM](https://discourse.paraview.org/uploads/default/original/2X/1/1c7df41531fa99d1343e428c9150542c60de935e.png)

 ![17%20AM](https://discourse.paraview.org/uploads/default/original/2X/2/2cc4c75a61431b1a683f6302a61e07804038d00d.png)

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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: [November 18, 2019, 9:48am UTC](https://discourse.paraview.org/t/exporting-csv-data-from-a-surface-at-a-particular-point-in-time/2963/4 "2019-11-18T09:48:47Z")

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Points are the position of the points.  
PointsMagnitude is an automatic (albeit non-nonsensical in this context) magnitude computation value for any vector in the spreadsheet.

If you are looking to see the W values at the probe points, you have to switch to show the “Probe Filter” “Cell Data” in the spreadsheet view.

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### Author: ![ramos](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/r/ecd19e/32.png) [@ramos](https://discourse.paraview.org/u/ramos)
#### Post date: [November 18, 2019, 8:29pm UTC](https://discourse.paraview.org/t/exporting-csv-data-from-a-surface-at-a-particular-point-in-time/2963/5 "2019-11-18T20:29:07Z")

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Thanks for the direction! I am able to successfully extract the surface points of interest.