PlotKit is three years old and doesn't look to have been maintained since then. Why did it show up here?

I was going to say something along similar lines when I saw that it had been tested against Firefox 1.5...

Another one is flot for jquery.

I've had such mixed results with the Javascript graphing libraries, Plotkit included. I always end up on a more traditional platform.

Almost the same here, I always found it difficult to do what I wanted with these frameworks. I ended writing my own custom javascript graphing code.

I realized it is not that hard to do, you can get nice graphs out quickly without too much code. I also found teh resulting code to be simpler than the one from libraries. I suspect that a lot of the complexity comes from making things generic, or maybe (in some cases) the authors being unfamiliar with javascript?

Also Flotr - http://solutoire.com/flotr/ which is like Flot but using Prototype instead of jQuery. As such can be used in a Rails project more easily.

See also Bluff, a JavaScript port of the Gruff graphing library for Ruby.

http://bluff.jcoglan.com/