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

Down with flash and imagemagick.

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

Answer 2

There is another gem called scruffy that does not need rmagick & imagemagick/graphicsmagick if you want to generate only svg.

Here is the project page http://scruffy.rubyforge.org that has quite a few examples

Answer 3

Chartkick looks trending at the moment and also works with Highcharts.

Answer 4

Or cloudsource the charts via google - here's the gem for that: https://github.com/mattetti/googlecharts

Example:

# console
$ ruby script/plugin install git://github.com/mattetti/googlecharts.git

# view
<img src="<%=GoogleChart.pie(['1997',10],['1998',70],['1999',20]).to_url%>">

Answer 5

For small graphs, there is Sparklines

Answer 6

In addition to the aptly named googlecharts gem mentioned above there are two more that use the Google Charts API, gchartb and ruby-googlechart.

For the very awesome protovis javascript charting library, looks like someone has started a rails plugin called protovis on rails, but it still looks rough and hasn't been touched in a while.