Change data-transform hierarchy nodes

Support
1

Hi there!
I’m trying to find how can I with python change transform hierarchy of the scene, and all I was able to find is only how to change subject hierarchy:
sceneItemID = shn.GetSceneItemID()
shn = slicer.vtkMRMLSubjectHierarchyNode.GetSubjectHierarchyNode(slicer.mrmlScene)
subjectItemID = shn.GetItemChildWithName(sceneItemID, ‘volume3-TrackerToProbe’)
subjectItemID2 = shn.GetItemChildWithName(sceneItemID, ‘NeedleModel_1’)
shn.SetItemParent(subjectItemID,subjectItemID2)

Can someone please guide me how to change transform hierarchy nodes? Many thanks!

2

Subject hierarchy is for organizing your data, but it has no effect in terms of transforms. Here’s how you can apply the transform:

transformNode = slicer.util.getNode(‘volume3-TrackerToProbe’)
needleModelNode = slicer.util.getNode(‘NeedleModel_1’)
needleModelNode.SetAndObserveTransformNodeID(transformNode.GetID())
1 Like
3

Thank you so much, that worked!

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