Radar chart lines

First attempt to offer something to my referring to the excellent tutorial by pullmonkey.com and harryseldon
here is the ruby in transposition of the third example of radar chart
radar chart lines

test_it_controller.rb

class TestItController < ApplicationController
 def index
   @graph1 = open_flash_chart_object(600,300,"/test_it/graph1_code")
 end

 def graph_code
   chart = OpenFlashChart.new
   chart.set_title(Title.new('Radar Chart'))

   values = [30,50,60,70,80,90,100,115,130,115,100,90,80,70,60,50]
   spokes = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p']
   vals = []

   values.each_with_index do |value, i|
     tmp = DotValue.new( value, '#D41E47' )
     tmp.set_tooltip("#val#&ltbr%rtSpoke: #{spokes[i]}")
     vals.push(tmp)
     end
  
   line = LineHollow.new()
   line.set_values( vals )
   line.set_halo_size( 0 )
   line.set_width( 2 )
   line.set_dot_size( 6 )
   line.set_colour( '#FBB829' )
   line.set_key( 'Hearts', 10 )
   line.loop()


   # add the area object to the chart:
   chart.add_element(line)

   r = RadarAxis.new( 150 )
   r.set_steps(10)
   r.set_colour( '#DAD5E0' )
   r.set_grid_colour( '#EFEFEF' )
   chart.set_radar_axis( r )

   tooltip = Tooltip.new()
   tooltip.set_proximity()
   chart.set_tooltip( tooltip )

   chart.set_bg_colour( '#ffffff' )

   render :text => chart.to_s
 end
end