Chart JS
Chart JS is a simple yet flexible JavaScript charting library. This gem is a Ruby Domain Specific Language which allows you to easily build charts without touching a single line of JavaScript or HTML.
Installation
$ gem install chart_js
Usage
A simple example to generate a static html file.
require "chart_js"
ChartJS.line do
file "example.html"
data do
labels ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]
dataset "Cats" do
color :random
data [12, 19, 3, 5, 2, 3]
end
dataset "Dogs" do
color :random
data [10, 12, 3, 4, 5, 3]
end
end
endWeb Framework Integration
chart_js plays well with others.
require "chart_js"
require "sinatra"
get "/" do
chart = ChartJS.line do
data do
labels ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]
dataset "Cats" do
color :random
data [12, 19, 3, 5, 2, 3]
end
dataset "Dogs" do
color :random
data [10, 12, 3, 4, 5, 3]
end
end
end
chart.to_html
endScreenshot
License
The gem is available as open source under the terms of the MIT License.