# Why is my EvenlySpacedStreamlines2D not working

**URL:** https://discourse.paraview.org/t/why-is-my-evenlyspacedstreamlines2d-not-working/17627
**Category:** ParaView Support
**Created:** [June 18, 2026, 6:31am UTC](https://discourse.paraview.org/t/why-is-my-evenlyspacedstreamlines2d-not-working/17627 "2026-06-18T06:31:23Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Buggs\_Bunny](https://discourse.paraview.org/user_avatar/discourse.paraview.org/buggs_bunny/32/16082_2.png) [@Buggs\_Bunny](https://discourse.paraview.org/u/Buggs_Bunny)
#### Post date: [June 18, 2026, 6:31am UTC](https://discourse.paraview.org/t/why-is-my-evenlyspacedstreamlines2d-not-working/17627/1 "2026-06-18T06:31:23Z")

</div>

Hello,

I want to add streamlines on a slice. I understand EvenlySpacedStreamlines2D only work in the X-Y plane so I have transformed my data so that the slice I want is in the X-Y plane. Why am I unable to see any streamlines?

Order of my filter’s:  
Calculator with expression: “Velocity u”\*iHat+“Velocity w”\*kHat

Tansform: Rotate [90, 0, 0]

Slice: Velocity |v|

EvenlySpacedStreamline2D

I have also tried transforming first and then calculating the velocity vector (expression: “Velocity u”\*iHat+“Velocity w”\*jHat), but that did not work as well.

[OneDrive file](https://unisyd-my.sharepoint.com/:u:/g/personal/nishanth_pradyumna_sydney_edu_au/IQAHZfO7jAP9Saw_0-M8pYmNAVVq_eHosnJr180VZ2DSwyo?e=fnHdY0)

 ![image](https://discourse.paraview.org/uploads/default/original/3X/d/0/d04b11645845525f08ae1bb9b524cbc716fa2018.png)

 ![image](https://discourse.paraview.org/uploads/default/original/3X/e/a/ea091fbab8bb6d47efd04b8eb6d0872e7e8c39c1.png)

 ![image](https://discourse.paraview.org/uploads/default/original/3X/1/b/1b334eb454a05be7b110de9b7627ec1d82ba6f78.png)