Simple code to generate a Google Charts pie chart url

GooglePie.rb

# values is expected to be hash whose keys are the names of the pie segments
def chart_url(values, size = '300x125')
  colors = %w(FF9900 324C8E ff0000 FF69B4 1E90FF 9ACD32 DAA520 40E0D0)
  basic_chart = {:chs => size, :cht => 'p3', :chco => colors.join('|')}
  chart_params = basic_chart.merge( :chd => 't:'+values.values.join(','), 
    :chdl => values.keys.map { |f| "#{f} (#{values[f]})"}.join('|'), :chtt =>'name of chart')
  "http://chart.apis.google.com/chart?#{chart_params.to_query}"
end