# SimpleITK, numpy, scipy, and voxel ordering

**URL:** <https://discourse.itk.org/t/simpleitk-numpy-scipy-and-voxel-ordering/5250>\
**Category:** Algorithms\
**Created:** [August 8, 2022, 7:14pm UTC](https://discourse.itk.org/t/simpleitk-numpy-scipy-and-voxel-ordering/5250 "2022-08-08T19:14:26Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![gdevenyi](https://discourse.itk.org/user_avatar/discourse.itk.org/gdevenyi/32/355_2.png) [@gdevenyi](https://discourse.itk.org/u/gdevenyi)\
**Post date:** [August 8, 2022, 7:14pm UTC](https://discourse.itk.org/t/simpleitk-numpy-scipy-and-voxel-ordering/5250/1 "2022-08-08T19:14:26Z")

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Following up on [Images in physical space in Python](https://discourse.itk.org/t/images-in-physical-space-in-python/2124)

Was it decided how x,y,z in SimpleITK, is represented? I can’t find a complete description of the voxel dimension ordering in [Fundamental Concepts — SimpleITK 2.0rc2 documentation](https://simpleitk.readthedocs.io/en/master/fundamentalConcepts.html)

This question also extends to vectors and time series, is there a consistent physical ordering? I would guess its LPS based on other things I’ve seen in ITK, but I can’t find a place its confirmed to be this way.