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Is it possible to mask by colour with nodes? Say for instance I use the colour output of a procedural noise. How could I extract the "red" noise from the RGB noise as a greyscale isolated map? So that I could further use that as a multiply/subtract noise mask.

In Terragen we have nodes such as Red to Scalar, Green to Scalar, and Blue to Scalar, but I can't find a similar node in Blender.

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you can use the separate RGB node like this:

enter image description here

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    $\begingroup$ Oh thank you. Probably should have searched more within Blender than relying on Google. OT: Boy, do a lot of irrelevant tutorials pop up filling search results. $\endgroup$
    – WASasquatch
    17 hours ago
  • $\begingroup$ you are welcome $\endgroup$
    – Chris
    16 hours ago

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