Here's a class for SuperCollider that generates perlin noise. I wrote it about a year ago to learn how that works but didn't finish the help file until now.
Some examples of images made with this class...
and this is an example from the help file that gives an overview of some settings of 'persistence vs octaves'. The 8 steps of persistence grow from 0.25 to 0.95 left to right. And octaves grows from 2 to 9 bottom to top.
Updates:
090523: RedPerlin is now part of the redUniverse quark. Install it with Quarks.install("redUniverse");
Sorry, this place got hacked and someone overwrote all my media files (snd, pic, vid). I'm travelling atm and it will be a few more weeks until I can access the backup files and restore the archive.
Updates:
071022: ok everything should now be back in place.
Here I've attached the SuperCollider history file from my performance at the headphones concert at the live coding festival in Sheffield... livecode.access-space.org (archive.org)
It's a bit embarrassing if you study it more carefully. The use of ~pub near the end is a big mistake for instance. I meant ~out and I don't know what I was thinking there...
You can also look at the file '2007-20-20pub.rtf' for the actual document I used. Some comments in there didn't make it to the history file as I forgot to evaluate them.
Here are also the notes and statistics from my presentation "Live coding practice" in which I talked about my month worth of practising.
In preparation for the LOSS livecode festival (archive.org) in Sheffield, I'm doing another month of practice. 1 hour/day, start with an empty document, no third-party classes or UGens and then upload the result here on the swiki.
This time my sparring partner is photographer and artist www.fotokatie.com/katier. She's doing a very nice series of 'star shots'.
Nick has written a nice paper on live coding practice (for NIME 2007). He discusses some of the issues discovered while doing the practising pact last August.
A different plot for SuperCollider. Though it is actually more useful as an 'artistic' visualiser rather than a serious way to represent data. It works with collections like arrays, envelopes and wavetables. The technique is to translate them to length/angle pairs and then draw a shape from that.
It's distributed via SuperCollider's package system quarks. All open source.
Quarks.install("redUniverse");
//and then recompile
There's also some older code here that does similar drawings...
