# New Segment Editor effect: Local threshold

**URL:** <https://discourse.slicer.org/t/new-segment-editor-effect-local-threshold/9233>\
**Category:** Support\
**Tags:** feature, segmentation\
**Created:** [November 20, 2019, 5:01pm UTC](https://discourse.slicer.org/t/new-segment-editor-effect-local-threshold/9233 "2019-11-20T17:01:15Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![sfglio](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/sfglio/32/3346_2.png) [@sfglio](https://discourse.slicer.org/u/sfglio)\
**Post date:** [June 25, 2020, 7:58pm UTC](https://discourse.slicer.org/t/new-segment-editor-effect-local-threshold/9233/7 "2020-06-25T19:58:00Z")

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Yes! But I don’t get it: pressing cmd+left click (I assume mouse left click) - where (in which window) and when should I press these buttons???

e.g if I use level tracing than I just need to left-click on the mouse and I immediately see the segmented area - however in local threshold the region is getting lighter and darker green constantly but if I press cmd+left click nothing happens…

 ![Bildschirmfoto 2020-06-25 um 21.54.49](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/2/2/22141b7923c3bb337dbf1d8dfe99f0c5584e5705.png)

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_[View the full topic](https://discourse.slicer.org/t/new-segment-editor-effect-local-threshold/9233)._