I've started building my own visualization library in Ruby. What I really want is a port of processing, but I don't have half the artistic sense, or a quarter of the math skillz to pull that off.
So, anyway. Here's a simple first test.
I think it's a bit pretty. That's 3 days internal email messages. Messages go out the top of a node, and into the bottom. CC messages are red. The pie-chart-looking things are send:receive ratios.
The whole library is...umm...let's say "renderer agnostic." This particular image was rendered with the RubyCocoa bindings, but I can also to tell it to render with RMagick, or PDF::Writer. So, that's good.
I have a lot of refactoring to do, and some serious documentation. After that, I'll release that ol' gem.
Oh. And no gradients. My one design decision: no gradients. There's plenty of Gruff/Scruffy if you want gradients. I'm not looking to make visualizations that insult peoples' intelligence.