# noise modifier for a node value

**URL:** <https://blenderartists.org/t/noise-modifier-for-a-node-value/559859>\
**Category:** Animation and Rigging\
**Created:** [December 18, 2012, 1:05pm UTC](https://blenderartists.org/t/noise-modifier-for-a-node-value/559859 "2012-12-18T13:05:59Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![sethjames9000](https://blenderartists.org/letter_avatar_proxy/v4/letter/s/7ea924/32.png) [@sethjames9000](https://blenderartists.org/u/sethjames9000)\
**Post date:** [December 18, 2012, 1:05pm UTC](https://blenderartists.org/t/noise-modifier-for-a-node-value/559859/1 "2012-12-18T13:05:59Z")

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I want to add a noise modifier to factor in a mix node. It doesn’t show up in the graph editor. How can I do it?

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**Author:** ![Atom](https://blenderartists.org/user_avatar/blenderartists.org/atom/32/2832_2.png) [@Atom](https://blenderartists.org/u/Atom)\
**Post date:** [December 18, 2012, 2:02pm UTC](https://blenderartists.org/t/noise-modifier-for-a-node-value/559859/2 "2012-12-18T14:02:03Z")

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For a modifier to show up in the graph editor you need to have at least one keyframe for the channel. So rewind to frame 1 and insert a keyframe for the factor. Then move your mouse into to graph editor and press the N-KEY. Scroll down to the bottom of the numeric input panel and click Add Modifier and choose noise. The noise will be centered around the initial value of the keyframe. So you may want to set your Mix factor to 0.5 before your insert the first and only keyframe.

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**Author:** ![eppo](https://blenderartists.org/user_avatar/blenderartists.org/eppo/32/18441_2.png) [@eppo](https://blenderartists.org/u/eppo)\
**Post date:** [December 18, 2012, 2:02pm UTC](https://blenderartists.org/t/noise-modifier-for-a-node-value/559859/3 "2012-12-18T14:02:45Z")

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Add Input - Value to drive Fac; that could be driven by python driver in turn. [http://vimeo.com/40389198](http://vimeo.com/40389198)

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**Author:** ![sethjames9000](https://blenderartists.org/letter_avatar_proxy/v4/letter/s/7ea924/32.png) [@sethjames9000](https://blenderartists.org/u/sethjames9000)\
**Post date:** [December 18, 2012, 3:56pm UTC](https://blenderartists.org/t/noise-modifier-for-a-node-value/559859/4 "2012-12-18T15:56:31Z")

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I diddnt have the node selected in the node editor, thats why it wasnt showing up. Thanks!