1、首先打开电脑上的“matlab”,在命令行输入命令,绘制二维图像。此处以正弦函数的图像为例,使用plot函数绘制,命令行窗口如下图所示。
![](https://iknow-pic.cdn.bcebos.com/279759ee3d6d55fb75281d5b7d224f4a21a4dde5?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
2、点击enter键,运行之后,即可看到正弦函数的图像。横坐标范围为0到10,纵坐标范围为-1到1。
![](https://iknow-pic.cdn.bcebos.com/8644ebf81a4c510f062a89677059252dd52aa5e5?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
3、axis([xmin xmax ymin ymax])命令可以限制二维图像的x和y坐标,此处输入axis([0 2*pi -2 2]),限制横坐标为0到2*pi,纵坐标为-2到2。
![](https://iknow-pic.cdn.bcebos.com/2fdda3cc7cd98d100d3d674c313fb80e7aec90e5?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
4、点击enter之后,即可运行程序,绘图结果如下图所示,横坐标和纵坐标发生了变化。
![](https://iknow-pic.cdn.bcebos.com/5fdf8db1cb1349543bf78319464e9258d0094ae5?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)