说明：  受到控制界广泛接受的一个重要原因是因为它提供了方便的绘图功能.本章主要介绍2维图形对象的生成函数及图形控制函数的使用方 法,还将简单地介绍一些图形的修饰与标注函数及操作和控制MATLAB各种图形对象的方法.
(One important reason is controlled world widely accepted because it provides a convenient graphics Introduces generate two-dimensional graphic object function and an important reason is controlled world widely accepted because it provides a convenient drawing capabilities. This chapter using the method described two-dimensional graphics object generation function and graphical control function will simply introduce some modifications and methods of labeling graphics functions and the operation and control of MATLAB graphic objects.)