vb+surfer 绘制等值线图，用vb编程的方式调用surfer出图，自动生成等值线-by visual basic and surfer draw picter auto run,ultlize the picture frame,draw some pretty picture,very well this an example,my write sever years ago

设计一个应用程序，能够绘制任意次数（不超过6次）的一员函数图像。其中次数和各项系数由用户动态指定，程序能够根据用户指定的各项系数来绘制函数图像。-Designing an application, be able to draw any number of times (no more than 6 times) of a function of the image. Where the frequency and the coefficient of dynamic specified by