# Calculating the displacement between two models

**URL:** <https://discourse.slicer.org/t/calculating-the-displacement-between-two-models/4012>\
**Category:** Support\
**Created:** [September 7, 2018, 4:17am UTC](https://discourse.slicer.org/t/calculating-the-displacement-between-two-models/4012 "2018-09-07T04:17:53Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [January 24, 2019, 9:32pm UTC](https://discourse.slicer.org/t/calculating-the-displacement-between-two-models/4012/22 "2019-01-24T21:32:43Z")

</div>

Displacement field is defined for a 3D region of interest, but of course you can just take samples from it anywhere you need it.

```auto
transform = vtk.vtkGeneralTransform()
getNode('MyTransformNodeName').GetTransformToWorld(transform)

originalPoint = [2.4, -1.1, 5.3]
transformedPoint = transform.TransformPoint(originalPoint)
print transformedPoint

```

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