Ruby charting library?

Question

I need to display some charts/graphs based upon user inputs on my web aplication built using Ruby on Rails. Are there any charting libraries out there that I could use with ROR for displaying simple bar, line and pie graphs?

Answer 1

There is a nice gem called

gruff

for graphs in ruby. You'll need the fabulous imagemagick and rmagick library. Since installation of the latter two is not really trivial (but not difficult, either), there's a installation FAQ for that.

Looks something like this:

More examples of this library: http://geoffreygrosenbach.com/projects/show/5

Answer 2

Down with flash and imagemagick.

Try Highcharts with the lazy high charts plugin for ruby: github.com/michelson/lazy_high_charts.