# Read data off a curved terrain.
**URL:** https://discourse.paraview.org/t/read-data-off-a-curved-terrain/6210
**Category:** ParaView Support
**Created:** [January 12, 2021, 2:49pm UTC](https://discourse.paraview.org/t/read-data-off-a-curved-terrain/6210 "2021-01-12T14:49:11Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@Olivier\_Dambron](https://discourse.paraview.org/u/Olivier_Dambron)
#### Post date: [January 12, 2021, 2:49pm UTC](https://discourse.paraview.org/t/read-data-off-a-curved-terrain/6210/1 "2021-01-12T14:49:11Z")
Hi everyone,
I’m trying to read data at 1.1m off the ground, but my ground is sloped/hilly.
What would be the best way to use the ground’s geometry, offset it by 1.1m and read result there?
Thanks in advance;
Kind regards,
Olivier
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [January 12, 2021, 2:59pm UTC](https://discourse.paraview.org/t/read-data-off-a-curved-terrain/6210/2 "2021-01-12T14:59:25Z")
This is a bit unclear, can you share your dataset ?
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### Author:  [@Olivier\_Dambron](https://discourse.paraview.org/u/Olivier_Dambron)
#### Post date: [January 12, 2021, 3:05pm UTC](https://discourse.paraview.org/t/read-data-off-a-curved-terrain/6210/3 "2021-01-12T15:05:27Z")
hi @mwestphal
Thanks for replying.
I’ll try to describe this better and if still needed I’ll share a demo dataset.
It’s a CFD simulation over a curved terrain, I’m trying to read the U velocity at 1.1m off the ground.The usual slice normal to Z doesnt work as it intersects the terrain many times.
let me know if this is clearer
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [January 12, 2021, 3:09pm UTC](https://discourse.paraview.org/t/read-data-off-a-curved-terrain/6210/4 "2021-01-12T15:09:30Z")
So you have:
1. A volumic dataset with a U velocity defined everywhere
2. A surfacic dataset corresponding to the ground
Is that correct ?
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### Author:  [@Olivier\_Dambron](https://discourse.paraview.org/u/Olivier_Dambron)
#### Post date: [January 12, 2021, 3:16pm UTC](https://discourse.paraview.org/t/read-data-off-a-curved-terrain/6210/5 "2021-01-12T15:16:57Z")
That is correct indeed.
I can either read results on a slice anywhere or also read results on surfaces of my geometries.
I’d like to use the shape of the ground , offset it by a distance along Z axis and read the volumic data there.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [January 12, 2021, 3:19pm UTC](https://discourse.paraview.org/t/read-data-off-a-curved-terrain/6210/6 "2021-01-12T15:19:23Z")
This should work then:
1. Open your volumic data, Apply
2. Open your surfacic data, Apply
3. Add a transform filter on the surface, Translation of 1.1 in z, Apply
4. Select the volume
5. Add a ResampleWithDataset filter
6. Select the transform as a secondary input
7. Apply
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### Author:  [@Olivier\_Dambron](https://discourse.paraview.org/u/Olivier_Dambron)
#### Post date: [January 12, 2021, 3:26pm UTC](https://discourse.paraview.org/t/read-data-off-a-curved-terrain/6210/7 "2021-01-12T15:26:29Z")
@mwestphal you’re the best!
I had to hack my world for the past 3 years before this and lose so much time!!
Thank you so much this is wonderful!!!
Best wishes
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [January 12, 2021, 3:27pm UTC](https://discourse.paraview.org/t/read-data-off-a-curved-terrain/6210/8 "2021-01-12T15:27:27Z")
My pleasure 🙂