# Extract an oblique plane using the direction matrix

**URL:** https://discourse.itk.org/t/extract-an-oblique-plane-using-the-direction-matrix/2990
**Category:** Beginner Questions
**Created:** [April 22, 2020, 2:42pm UTC](https://discourse.itk.org/t/extract-an-oblique-plane-using-the-direction-matrix/2990 "2020-04-22T14:42:07Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Helena](https://discourse.itk.org/user_avatar/discourse.itk.org/helena/32/1407_2.png) [@Helena](https://discourse.itk.org/u/Helena)
#### Post date: [April 22, 2020, 2:42pm UTC](https://discourse.itk.org/t/extract-an-oblique-plane-using-the-direction-matrix/2990/1 "2020-04-22T14:42:07Z")

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I am new to ITK, but was using it to resample my volume into a new direction matrix of (-0.237453, -0.971399, 0.0, 0.971399, -0.237453, 0.0, 0.0, 0.0, 1.0). I would like to get the axial view at a specific mid point. I tried to use python slicing after resampling the volume but it does not work. I was looking at using extract filters but am struggling to see how to do this. The slice I want is shown in the image below as the sagittal view (yellow window).

Thank you

 ![slicerplane](https://discourse.itk.org/uploads/default/original/2X/2/2e6e83fb2d5ff3abac07ac0eaea7c7e50d31e89d.jpeg)