google_chart插件画图

google_chart 画图 插件

def venn_diagram  
  require 'google_chart'  
  GoogleChart::VennDiagram.new("400x400", 'Venn Diagram') do |vd|  
      vd.data "Blue", 500,'0000ff'  
       vd.data "Green", 400, '00ff00'  
       vd.data "Red", 300, 'ff0000'  
       vd.intersections 200, 100, 50  
       @chart1 = vd.to_url  
   end  
   GoogleChart::BarChart.new('800x200', "Bar Chart", :vertical, false) do |bc|  
       bc.data "beijing", [20000], '0000ff'  
       bc.data "shanghai", [18000], 'ff0000'  
       bc.data "tianjin", [10000], '00ff00'  
       bc.data "nanjing", [8000], '00aaff'  
       bc.data "guangzhou", [16000], '0effee'  
       bc.data "shenzhen", [14000], 'eeff00'  
       @chart2 = bc.to_url  
   end 

  GoogleChart::PieChart.new('320x200', "Pie Chart",false) do |pc|  
      pc.data "very good", 300  
      pc.data "good", 200  
      pc.data "just so so", 100  
      pc.data "bad", 180  
      pc.show_labels = true  
      @chart3 = pc.to_url  
   end  
  GoogleChart::LineChart.new('320x200', "Line XY Chart", true) do |lcxy|  
      lcxy.data "amount", [[1,56], [2,48], [3,68], [4,59], [5,66], [6,67], [7,59]], '0000ff'  
      @chart4 = lcxy.to_url  
  end 

 end  

view 代码：

<%= image_tag @chart1 %> 
<%= image_tag @chart2 %> 
<%= image_tag @chart3 %> 
<%= image_tag @chart4 %> 

网上看到了 以后也许要用备注下