可以这样改：len = (length(X)-1)/100;set(gca,'xticklabel',[0:0.01:len]); %%%%% 用向量就行 例如：clear;clc;X = rand(1,100);plot(X)set(gca,'xticklabel',[0:0.01:0.99])
t=(0:size(X,2)-1)*0.01;plot(t,X);
