# Scalar Color Mapping widget is missing in Volume Rendering

**URL:** <https://discourse.slicer.org/t/scalar-color-mapping-widget-is-missing-in-volume-rendering/19715>\
**Category:** Support\
**Created:** [September 17, 2021, 2:00am UTC](https://discourse.slicer.org/t/scalar-color-mapping-widget-is-missing-in-volume-rendering/19715 "2021-09-17T02:00:19Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [September 18, 2021, 12:06am UTC](https://discourse.slicer.org/t/scalar-color-mapping-widget-is-missing-in-volume-rendering/19715/3 "2021-09-18T00:06:11Z")

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This is a feature that probably has not been announced properly [until now](https://discourse.slicer.org/t/color-rgb-volume-rendering/19732). When you load a color (RGB or RGBA) volume then it is rendered using the color stored in each voxel. Since no scalar-\>color mapping is performed, the “Scalar Color Mapping” section is not displayed.

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_[View the full topic](https://discourse.slicer.org/t/scalar-color-mapping-widget-is-missing-in-volume-rendering/19715)._