# how to combine and calculate the data from the same cell and point model?

**URL:** https://discourse.paraview.org/t/how-to-combine-and-calculate-the-data-from-the-same-cell-and-point-model/6552
**Category:** ParaView Support
**Created:** [February 25, 2021, 9:05am UTC](https://discourse.paraview.org/t/how-to-combine-and-calculate-the-data-from-the-same-cell-and-point-model/6552 "2021-02-25T09:05:40Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![aquanaut](https://discourse.paraview.org/user_avatar/discourse.paraview.org/aquanaut/32/1302_2.png) [@aquanaut](https://discourse.paraview.org/u/aquanaut)
#### Post date: [February 25, 2021, 9:05am UTC](https://discourse.paraview.org/t/how-to-combine-and-calculate-the-data-from-the-same-cell-and-point-model/6552/1 "2021-02-25T09:05:40Z")

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![Screenshot from 2021-02-25 17-02-06](https://discourse.paraview.org/uploads/default/original/2X/0/03d285978fec046f4ad5f3c846ef5e4f51b858b8.png)

hi,I want to calculate the square root of Vx Vy Vz but in three same model.How can I do that?

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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: [February 25, 2021, 9:10am UTC](https://discourse.paraview.org/t/how-to-combine-and-calculate-the-data-from-the-same-cell-and-point-model/6552/2 "2021-02-25T09:10:38Z")

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AppendAttributes and Calculcator filters should do the trick

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### Author: ![aquanaut](https://discourse.paraview.org/user_avatar/discourse.paraview.org/aquanaut/32/1302_2.png) [@aquanaut](https://discourse.paraview.org/u/aquanaut)
#### Post date: [February 25, 2021, 9:49am UTC](https://discourse.paraview.org/t/how-to-combine-and-calculate-the-data-from-the-same-cell-and-point-model/6552/3 "2021-02-25T09:49:35Z")

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![Screenshot from 2021-02-25 17-47-13](https://discourse.paraview.org/uploads/default/original/2X/d/d9ebaff6aa31d5200f74a9d4a0f2f3ba1de8c003.png)  
there is an error.i am not sure if i do the right flow path.

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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: [February 25, 2021, 9:52am UTC](https://discourse.paraview.org/t/how-to-combine-and-calculate-the-data-from-the-same-cell-and-point-model/6552/4 "2021-02-25T09:52:02Z")

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remove` vel=` from your expression