What is your preferred way to produce charts in a Ruby on Rails web application?

Question

I\'d like to add some pie, bar and scatter charts to my Ruby on Rails web application. I want want them to be atractive, easy to add and not introduce much overhead.

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Answer 1

Have you tried the Google Charts API? - web service APIs don't really come much simpler. It's free to use, simple to implement, and the charts don't look too shoddy.