title: What is your preferred way to produce charts in a Ruby on Rails web application?
body: <p>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. </p>
  
  <p>What charting solution would you recommend?<br>
  What are its drawbacks (requires Javascript, Flash, expensive, etc)?</p>