# By default, <code>chart</code> plots a column for each series.
#
# You can use the <code>:type</code> option to plot a line chart instead.
filename = File.basename(__FILE__).gsub('.rb', '.pdf')
Prawn::ManualBuilder::Example.generate(filename) do
  data = {views: {2013 => 182, 2014 => -46, 2015 => 88},
        uniques: {2013 => 104, 2014 => 27, 2015 => 14}}
  chart data, type: :line, labels: [false, true], formats: %i(percentage percentage), line_widths: [0.5]
end