MATLAB 折线变曲线问题用cdf画图方法画了两条线 ,怎么把折线变成曲线?a=[1 6/7

a=[1 6/7 13/22 0 0 38/55 1 42/61 7/9 15/23 26/33 39/62 0 4/5 1 18/25];cdfplot(a);hold on[f,x] = ecdf(a);x1=[x(1:3)];y1=[f(1:3)];plot(x1,y1,'r-')hold onx2=[x(3:13)],y2=[f(3:13)]p=polyfit(x2,y2,5)xi=0.59:0.01:1;yi=polyval(p,xi)plot(xi,yi,'r*')