# difference between points
**URL:** https://discourse.paraview.org/t/difference-between-points/16357
**Category:** ParaView Support
**Created:** [March 18, 2025, 10:56pm UTC](https://discourse.paraview.org/t/difference-between-points/16357 "2025-03-18T22:56:03Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@FredrikR](https://discourse.paraview.org/u/FredrikR)
#### Post date: [March 18, 2025, 10:56pm UTC](https://discourse.paraview.org/t/difference-between-points/16357/1 "2025-03-18T22:56:03Z")
Hi!
I have a mesh with data points showing displacement. I would like to plot the displacement difference between 2 points over time. Any suggestions?
Best regards Fredrik
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### Author:  [@Lucas\_Givord](https://discourse.paraview.org/u/Lucas_Givord)
#### Post date: [March 20, 2025, 7:55am UTC](https://discourse.paraview.org/t/difference-between-points/16357/2 "2025-03-20T07:55:09Z")
Hi @FredrikR,
I know that the `Plot Selection over time` can display the avg, median an few other statistic metrics, maybe their is a difference metric?
To test it, select first your 2 points with the `Select Points On`, then apply the `Plot Selection over time` filter, it will iterate on all timesteps and compute few metrics.
If it doesn’t work, you can do the difference with a calculator or a programmable filter then use this Plot Selection over time again.
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### Author:  [@FredrikR](https://discourse.paraview.org/u/FredrikR)
#### Post date: [March 22, 2025, 7:44am UTC](https://discourse.paraview.org/t/difference-between-points/16357/3 "2025-03-22T07:44:35Z")
Hi [@Lucas](https://discourse.paraview.org/u/Lucas_Givord)!
Thanks for your respond. `Plot Selection over time` have some operations like min, max, sum but not difference. `Programmable filter` looks highly configurable. That will be a good starting point for me. I will read the doc to start to understand the syntax. Thanks!
/Fredrik