1、首先,打开MATLAB。
![](https://iknow-pic.cdn.bcebos.com/8d5494eef01f3a2987f23e1f9725bc315c607c2d?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
2、然后会弹出一个命令窗,在文本编辑窗里编写指令,点击【New Script】.。
![](https://iknow-pic.cdn.bcebos.com/f703738da9773912aef96db0f6198618377ae200?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
3、分别输入x,y的所有值。注意,x,y的取值个数要相等,不然系统会报错。
![](https://iknow-pic.cdn.bcebos.com/9213b07eca80653871344cc299dda144ac348201?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
4、输入完数据之后写figure,plot(x,y),figure表示新建一张表格。
![](https://iknow-pic.cdn.bcebos.com/f7246b600c338744b428c7ad5f0fd9f9d62aa076?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
5、为了设定x,y轴的取值和间隔,写
set(gca,'xtick',100:200:2800)
set(gca,'ytick',0.061:0.010:0.341)
表示起始值,间隔,终止值。
![](https://iknow-pic.cdn.bcebos.com/0eb30f2442a7d933367e0ca2a34bd11372f00109?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
6、如果想加上网格,写grid on。
![](https://iknow-pic.cdn.bcebos.com/242dd42a2834349b6b2e8554c7ea15ce36d3be33?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
7、都写好之后,点击【run】运行。
![](https://iknow-pic.cdn.bcebos.com/b64543a98226cffc0bb65763b7014a90f703ea47?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
8、随后就可以看到完成的图像。
![](https://iknow-pic.cdn.bcebos.com/d62a6059252dd42a4f44e97a0d3b5bb5c8eab896?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)