# Transform
**URL:** https://discourse.vtk.org/t/transform/8980
**Category:** Support
**Created:** [July 20, 2022, 1:02pm UTC](https://discourse.vtk.org/t/transform/8980 "2022-07-20T13:02:22Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@lyz](https://discourse.vtk.org/u/lyz)
#### Post date: [July 20, 2022, 1:02pm UTC](https://discourse.vtk.org/t/transform/8980/1 "2022-07-20T13:02:22Z")
I check the example.[TransformPipeline](https://kitware.github.io/vtk-examples/site/Cxx/PolyData/TransformPipeline/) And I found that the `forearm` rotate around the center of the scene. How to rotate the `forearm` around the connection point between `arm` and `forearm`
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### Author:  [@lyz](https://discourse.vtk.org/u/lyz)
#### Post date: [July 21, 2022, 7:43am UTC](https://discourse.vtk.org/t/transform/8980/2 "2022-07-21T07:43:21Z")
Any tips?
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### Author:  [@Christos\_Tsolakis](https://discourse.vtk.org/u/Christos_Tsolakis)
#### Post date: [July 28, 2022, 11:26pm UTC](https://discourse.vtk.org/t/transform/8980/3 "2022-07-28T23:26:16Z")
You can try to translate the data, rotate and translate back.
Alternatively, you can set the transformation [matrix of rotation around and arbitrary point](https://math.stackexchange.com/questions/2093314/rotation-matrix-of-rotation-around-a-point-other-than-the-origin) directly.
check the API for `vtkTranform` [here](https://vtk.org/doc/nightly/html/classvtkTransform.html) it allows you to follow either approach.
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### Author:  [@lyz](https://discourse.vtk.org/u/lyz)
#### Post date: [July 29, 2022, 5:15am UTC](https://discourse.vtk.org/t/transform/8980/4 "2022-07-29T05:15:53Z")
thanks