graph 관련 라이브러리

http://code.google.com/p/s7graphview/


google graph.
http://code.google.com/intl/ko-KR/apis/chart/image/docs/making_charts.html


http://www.jaysonjc.com/programming/pie-chart-drawing-in-iphone-using-core-plot-library.html
 

Apple Core Plot
http://code.google.com/p/core-plot/
http://onstory.egloos.com/1904005 한글 블로그
http://recycled-parts.blogspot.com/2011/07/setting-up-coreplot-in-xcode-4.html xcode4
http://www.switchonthecode.com/tutorials/using-core-plot-in-an-iphone-application