• github.com/jparker/ruby-googlechart

ruby-googlechart is a ruby library which provides object-oriented access to the Google Charts API.

This library has largely been done as an exercise. These other ruby libraries are more mature and may be better suited to your needs:

• googlecharts.rubyforge.org/

• code.google.com/p/gchartrb/

• Line charts (line, XY, sparkline)

• Bar charts (horizontal, vertical, grouped, stacked)

require 'google_chart'

url = GoogleChart.Line(:data => [1, nil, 2, 8, 1])
url = GoogleChart.Bar(:data => [5, 23, 6, 14])

url = GoogleChart.Bar do |c|
  c.axes     = {:x => %w[Q1 Q2 Q3 Q4], :y => 0..400}
  c.data     = [335, 285, 240, 220, 160, 175, 200, 205]
  c.encoding = :extended
  c.scale    = 0..400
  c.size     = '800x375'
  c.style    = :dash
  c.title    = "Are You Pondering What I'm Pondering?"
  c.type     = :line
end
url = GoogleChart.Bar do |c|
  c.horizontal = true
  c.grouped    = true
  c.data       = [[5, 6, 7, 8], [23, 14, 17, 16]]
  c.encoding   = :text
  c.title      = 'Lorem Ipsum Dolor'
end

chart = GoogleChart::LineChart.new
chart.type  = :sparkline
chart.size  = '75x25'
chart.data  = [1, 1, 2, 3, 5, 8, 13]
chart.color = 'ff0000'
url = chart.to_url

• Low standards

• sudo gem install ruby-googlechart