# 2D colouring of a surface of a given shape (Circular rake)
**URL:** https://discourse.paraview.org/t/2d-colouring-of-a-surface-of-a-given-shape-circular-rake/14742
**Category:** ParaView Support
**Tags:** openfoam, cfd
**Created:** [May 30, 2024, 10:31am UTC](https://discourse.paraview.org/t/2d-colouring-of-a-surface-of-a-given-shape-circular-rake/14742 "2024-05-30T10:31:47Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@Shariq\_Shuaib](https://discourse.paraview.org/u/Shariq_Shuaib)
#### Post date: [May 30, 2024, 10:31am UTC](https://discourse.paraview.org/t/2d-colouring-of-a-surface-of-a-given-shape-circular-rake/14742/1 "2024-05-30T10:31:47Z")
Image courtesy: [https://arc.aiaa.org/doi/10.2514/6.2013-3796](https://arc.aiaa.org/doi/10.2514/6.2013-3796)
Greetings,
I hope this message finds you well. I am attempting to plot data similar to the attached image. I have scalar values at various points, represented in a CSV file with columns (x, y, z, scalar\_value). I am looking for a way to achieve this visualization in ParaView.
I have considered using the Delaunay 2D filter, but it results in a flat surface. My goal is to create a visualization that resembles a rake, as shown in the image. Is there a method in ParaView to achieve this effect?
Thank you for your time and expertise.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [May 30, 2024, 11:42am UTC](https://discourse.paraview.org/t/2d-colouring-of-a-surface-of-a-given-shape-circular-rake/14742/2 "2024-05-30T11:42:09Z")
Please share your data
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### Author:  [@Shariq\_Shuaib](https://discourse.paraview.org/u/Shariq_Shuaib)
#### Post date: [May 30, 2024, 3:49pm UTC](https://discourse.paraview.org/t/2d-colouring-of-a-surface-of-a-given-shape-circular-rake/14742/3 "2024-05-30T15:49:04Z")
Thank you for your response.
Attached is a CSV file containing x, y, and z coordinates followed by velocity magnitudes. These values were obtained by first inputting the CSV files of the coordinates into ParaView, where I had my CFD results. Then, I resampled at those points.
[data.csv](https://discourse.paraview.org/uploads/short-url/ziAwyJf2ZJq8qMzedd5pvLvv8fn.csv) (1.5 KB)
Please let me know if you need any further information.
Best regards
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [May 31, 2024, 7:30am UTC](https://discourse.paraview.org/t/2d-colouring-of-a-surface-of-a-given-shape-circular-rake/14742/4 "2024-05-31T07:30:16Z")
Something like that ?
Please note I used delaunay 2D and then remove the cells in the middle manually.
[state.pvsm](https://discourse.paraview.org/uploads/short-url/6KObmuEJYWu1yJzvHRZsVOHpCkc.pvsm) (481.8 KB)
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### Author:  [@Shariq\_Shuaib](https://discourse.paraview.org/u/Shariq_Shuaib)
#### Post date: [May 31, 2024, 10:15am UTC](https://discourse.paraview.org/t/2d-colouring-of-a-surface-of-a-given-shape-circular-rake/14742/5 "2024-05-31T10:15:57Z")
Hey Mathieu,
That’s exactly what I’m looking for. Could you please briefly explain the steps involved? Once again, thank you for your help.
Best regards,
Shariq
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [May 31, 2024, 11:31am UTC](https://discourse.paraview.org/t/2d-colouring-of-a-surface-of-a-given-shape-circular-rake/14742/6 "2024-05-31T11:31:07Z")
1. Create geometry:
- run ParaView
- File → Open → data.csv → Apply
- FIlters → TableToPoints → X, Y, Z, → Apply
- Filter → Delaunay2D → BestFittingPlane → Apply
1. Extract wanted cells
- Switch representation to SurfaceWithEdges
- Use “InteractiveSelectCellsOn”
- Select the few cells in the middle
- View → FIndData
- InvertSelection
- Filter → ExtractSelection
1. Representation
- Show TableToPoint as Point representation, increase point size
- Show the ExtractSelection as surface, show “Velocity” variable
- View → ColorMap Editor → Preset → All → KAAMS
hth
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### Author:  [@Shariq\_Shuaib](https://discourse.paraview.org/u/Shariq_Shuaib)
#### Post date: [May 31, 2024, 12:43pm UTC](https://discourse.paraview.org/t/2d-colouring-of-a-surface-of-a-given-shape-circular-rake/14742/7 "2024-05-31T12:43:32Z")
Thank you for your support.
Cheers