# Data Visualization and output

**URL:** https://discourse.paraview.org/t/data-visualization-and-output/10086
**Category:** ParaView Support
**Tags:** exodus
**Created:** [August 2, 2022, 9:00am UTC](https://discourse.paraview.org/t/data-visualization-and-output/10086 "2022-08-02T09:00:23Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Aayush-T](https://discourse.paraview.org/user_avatar/discourse.paraview.org/aayush-t/32/9689_2.png) [@Aayush-T](https://discourse.paraview.org/u/Aayush-T)
#### Post date: [August 2, 2022, 9:00am UTC](https://discourse.paraview.org/t/data-visualization-and-output/10086/1 "2022-08-02T09:00:24Z")

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Hello everyone, hope everyone is well. I have to do a certain operation in ParaView. So, I have some output parameters in my exodus file, named a1, a2, a3, a4, etc. These parameters are defined for each element in the mesh. I want to compare these parametric values for all the elements in the block and see the maximum value wrt time. e.g. at time-step 10, for an element 1, I have parameters a1, a2, a3 as 10, 22, 16 respectively and for element 2, I have a1, a2, a3 as 15, 11, 27 and so on. And I want to visualize the result as: Element 1 at time-step 10 should show 22, and element 2 shows 27. (Maximum value of the compared parameters.)  
Thanks in advance.

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### Author: ![Kenichiro-Yoshimi](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/k/ecc23a/32.png) [@Kenichiro-Yoshimi](https://discourse.paraview.org/u/Kenichiro-Yoshimi)
#### Post date: [August 5, 2022, 4:23am UTC](https://discourse.paraview.org/t/data-visualization-and-output/10086/2 "2022-08-05T04:23:50Z")

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Hello,

Using the **Python Calculator** filter and writing something like `np.maximum.reduce([a1,a2,a3])` in **Expression** may work.