# Geometric indices

**URL:** <https://discourse.slicer.org/t/geometric-indices/29191>\
**Category:** VMTK\
**Created:** [April 28, 2023, 4:23pm UTC](https://discourse.slicer.org/t/geometric-indices/29191 "2023-04-28T16:23:45Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Mudrika](https://avatars.discourse-cdn.com/v4/letter/m/c57346/32.png) [@Mudrika](https://discourse.slicer.org/u/Mudrika)\
**Post date:** [April 28, 2023, 4:23pm UTC](https://discourse.slicer.org/t/geometric-indices/29191/1 "2023-04-28T16:23:45Z")

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Hi!

Can anyone help me with the active scalars that are available for calculation in the centreline model? For the first model, I tried, all parameters were visible (torsion, tortuosity, length and radius) but afterwards only radius was there. I am new to 3D Slicer and VMTK, can anyone tell what I am missing out.

Thank you!