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r=1;theta=[linspace(0,2*pi,200),2*pi];xx=cos(theta);yy=sin(theta);numindex=randperm(7);plot(2*r*xx,2*r*yy); %外圆hold onplot(r*xx,r*yy,'--');%虚线圆plot(r*xx/3,r*yy/3);%原点的小圆text(0,0,num2str(numindex(1)),'HorizontalAlignment','center','VerticalAlignment','middle');for i=1:6 x0=r*2/3*cos(pi/3*i); y0=r*2 |
