本程序通过读取文件中的数据，实现了曲线图，柱状图和饼状图的绘制，其中包括静态和动态绘图，还可以实现图形的放大缩小，和移动-this procedure to read through the document data and realized the curve, and histogram Caky the drawing, These include static and dynamic mapping, can also be reduced to enlarge the graphic