# JupyterNotebooksLib Slicer - functions to edit volume rendering parameters?

**URL:** <https://discourse.slicer.org/t/jupyternotebookslib-slicer-functions-to-edit-volume-rendering-parameters/12776>\
**Category:** Development\
**Tags:** extensions-manager, python, jupyter\
**Created:** [July 29, 2020, 9:19pm UTC](https://discourse.slicer.org/t/jupyternotebookslib-slicer-functions-to-edit-volume-rendering-parameters/12776 "2020-07-29T21:19:10Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![allihuwa](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/allihuwa/32/7571_2.png) [@allihuwa](https://discourse.slicer.org/u/allihuwa)\
**Post date:** [July 29, 2020, 9:19pm UTC](https://discourse.slicer.org/t/jupyternotebookslib-slicer-functions-to-edit-volume-rendering-parameters/12776/1 "2020-07-29T21:19:10Z")

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Hi, I am able to successfully load a volume into the SlicerWeb extension and use the JupyterNotebookLib. What I wanted to do now is use functions in this library that enable me to change the volume rendering presets and opacity/color mapping in real-time and present them to the user as a changeable parameter just like ipywidgets is used to for instance interact with the 3D positioning of the volume. Are there functions like this built-in?

Thank you!