一、绘制圆点
plot(1,2,'ro')
![](https://img.laitimes.com/img/_0nNw4CM6IyYiwiM6ICdiwiI0NXYFhGd192UvwVe0lmdhJ3ZvwFM38CXlZHbvN3cpR2Lc1TPB10QGtWUCpEMJ9CXsxWam9CXwADNvwVZ6l2c052bm9CXUJDT1wkNhVzLcRnbvZ2Lc1TRHFGasNjW1Z1RhZXUYpVd1kmYr50MZV3YyI2cKJDT29GRjBjUIF2LcRHelR3LcJzLctmch1mclRXY39TN1kjN0cDM3ETOwEDM4EDMy8CX0Vmbu4GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.jpg)
二、绘制圆形
1、空心圆:
11、plot
>> aplha=0:pi/40:2*pi;
>> r=2;
>> x=r*cos(aplha);
>> y=r*sin(aplha);
>> plot(x,y,'-');
>> axis equal
22、rectangle
rectangle('position',[0-3,0-3,3*2,3*2],'curvature',[1,1]);
>> axis equal
2、实心圆:
21、plot
在plot指令后加入
fill(x,y,'r')%红色填充
22、rectangle
rectangle('position',[0-3,0-3,3*2,3*2],'curvature',[1,1],'edgecolor','r','facecolor','r');
>> axis equal
3、rectangle
具体用法:点击打开链接