# Subtract a reference cell value at height z from all cell values at that height

**URL:** https://discourse.paraview.org/t/subtract-a-reference-cell-value-at-height-z-from-all-cell-values-at-that-height/11284
**Category:** ParaView Support
**Created:** [January 27, 2023, 12:34pm UTC](https://discourse.paraview.org/t/subtract-a-reference-cell-value-at-height-z-from-all-cell-values-at-that-height/11284 "2023-01-27T12:34:41Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![minecraftgp](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/m/35a633/32.png) [@minecraftgp](https://discourse.paraview.org/u/minecraftgp)
#### Post date: [January 27, 2023, 12:34pm UTC](https://discourse.paraview.org/t/subtract-a-reference-cell-value-at-height-z-from-all-cell-values-at-that-height/11284/1 "2023-01-27T12:34:41Z")

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Hi I would like to know if it is possible to do the following in paraview: Subtract a reference cell value at height z from all cell values at that height, and repeat such step for every heights of the domain