# Default settings for defying GLCM, RLM

**URL:** <https://discourse.slicer.org/t/default-settings-for-defying-glcm-rlm/11629>\
**Category:** Radiomics\
**Tags:** radiomics\
**Created:** [May 20, 2020, 3:46am UTC](https://discourse.slicer.org/t/default-settings-for-defying-glcm-rlm/11629 "2020-05-20T03:46:13Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![JoostJM](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/joostjm/32/1091_2.png) [@JoostJM](https://discourse.slicer.org/u/JoostJM)\
**Post date:** [May 23, 2020, 2:12pm UTC](https://discourse.slicer.org/t/default-settings-for-defying-glcm-rlm/11629/2 "2020-05-23T14:12:58Z")

</div>

Distances used by default is [1], but multiple can be specified. As for angles, all possible angles are used, with the ultimate feature value being the mean across features values calculated per angle. It is possible to skip angles that define an offset between slices, using force2D. It is not possible to skip specific angles.

If you want to calculate features for angles separately, you’ll need to create a custom feature class based on the regular GLCM/GLRLM classes. See also [this](https://discourse.slicer.org/t/features-extraction/11047/3) post.

All settings, and their default values, are listed in the PyRadiomics online documentation.

---

_[View the full topic](https://discourse.slicer.org/t/default-settings-for-defying-glcm-rlm/11629)._