如何matlab周期延拓？

x也要延拓啊 x = -0.05:0.00001:0.05; y=sin(100*pi*x); m=sign(y)*0.2.*(x>0&x<0.02); X=kron((0:7)/10,ones(1,10001))+repmat(x,1,8); M=repmat(m,1,8) ; plot(X,M)