Draw Graph



Use the Google Chart API to create charts for your web application


link 1
http://ajaxian.com/archives/use-the-google-chart-api-to-create-charts-for-your-web-applications


link 2
http://www.vvidget.org/manuals/VvidgetCode/Programming/Web/Tutorial/index.html


Pie chart
http://core-plot.googlecode.com/hg/documentation/html/iOS/interface_c_p_t_pie_chart.html

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