# Create 3d volumetric grid from 2d axisymmetric data
**URL:** https://discourse.paraview.org/t/create-3d-volumetric-grid-from-2d-axisymmetric-data/4800
**Category:** ParaView Support
**Created:** [July 9, 2020, 10:22pm UTC](https://discourse.paraview.org/t/create-3d-volumetric-grid-from-2d-axisymmetric-data/4800 "2020-07-09T22:22:26Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@woodscn](https://discourse.paraview.org/u/woodscn)
#### Post date: [July 9, 2020, 10:22pm UTC](https://discourse.paraview.org/t/create-3d-volumetric-grid-from-2d-axisymmetric-data/4800/1 "2020-07-09T22:22:26Z")
I want to make quantitative comparisons between 2-D axisymmetric data and 3-D data of a similar (though perturbed) simulation. I will therefore need some way of revolving the 2-D data into a 3-D dataset. The Rotational Extrusion filter does not appear to do what I want, since it only works on internal surfaces, producing output like what I’ve linked below. How would I go about doing something like this, perhaps using a Programmable Filter?
 
Related: [Visualize 2D data as a 3D radially symmetrical solid](https://discourse.paraview.org/t/visualize-2d-data-as-a-3d-radially-symmetrical-solid/3652)
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### Author:  [@randomwangran](https://discourse.paraview.org/u/randomwangran)
#### Post date: [July 10, 2020, 5:57pm UTC](https://discourse.paraview.org/t/create-3d-volumetric-grid-from-2d-axisymmetric-data/4800/2 "2020-07-10T17:57:07Z")
Would it be much eaisy if you slice your 3D data and compare it with 2D data?
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### Author:  [@woodscn](https://discourse.paraview.org/u/woodscn)
#### Post date: [July 10, 2020, 6:41pm UTC](https://discourse.paraview.org/t/create-3d-volumetric-grid-from-2d-axisymmetric-data/4800/3 "2020-07-10T18:41:46Z")
Easier, yes. However, I would then have to justify why I picked a particular slice over any other, and I would also not be able to make 3D visualizations of the results.