关于绘制各种统计图形（包括折线、散点图、饼图的2D和3D图形等）的开源代码，在vs2010下运行。同时本人修改了饼图多行分布的问题。-The open code of drawing graph of 2D and 3D, and it can be run in vs2010 platform.in the time i make some improvement in distribution on pie.