Introduction - If you have any usage issues, please Google them yourself
Creates 1/f spectrum noise images.
im = noiseonf(size, factor)
- size of image to produce
factor- controls spectrum = 1/(f^factor)
factor = 0 - raw Gaussian noise image
= 1 - gives the 1/f `standard drop-off for `natural images
= 1.5- seems to give the most intersting `cloud patterns
= 2 or greater- produces `blobby images
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