Financial Charts / Graphs in Ruby or Python

Question

What are my best options for creating a financial open-high-low-close (OHLC) chart in a high level language like Ruby or Python? While there seem to be a lot of options for

Answer 1

Are you free to use JRuby instead of Ruby? That'd let you use JFreeChart, plus your code would still be in Ruby

Answer 2

Open Flash Chart is nice choice if you like the look of examples. I've moved to JavaScript/Canvas library like Flot for HTML embedded charts, as it is more customizable and I get desired effect without much hacking (http://itprolife.worona.eu/2009/08/scatter-chart-library-moving-to-flot.html).