分别给出了三角函数曲线（1）、三角函数曲线（2）、图形的叠加、双y轴图形的绘制、单个轴窗口显示多个图形、图形标注、条形图形、区域图形的matlab样例代码，简单实用。-Were given trigonometric curve (1), trigonometric curve (2), graphics overlay, double y-axis graph drawing, a single-axis window displays the number of graphics, grap