google-chart-path.rb

  def chart_path(data_values, h_value, options = {})
		colour = options[:colour] || "000000"
		height = options[:height] || "100"
		width = options[:width] || "228"
		background_colour = options[:background_colour] || "FFFFFF"
		background_opacity = options[:background_opacity] || "00"
	
		google_chart_path = "http://chart.apis.google.com/chart?chs=" + width + "x" + height + "&cht=ls"
  	google_chart_path += "&chd=t:" + data_values.to_s + "&chds=0," + h_value.to_s + "&chxt=y,x&chxl=0:||" + "" + "|1:|" + "" + "|" + "" + "&chco=" + colour + "&chf=bg,s," + background_colour + background_opacity
  	
  	return google_chart_path

  end