examp3_55.m

matlab的大量实例代码

x=randn(30000,1); xx=linspace(-3,3,30);
y=hist(x,xx); yp=y/(length(x)*(xx(2)-xx(1)));

p0=exp(-xx.^2/2)/sqrt(2*pi);
bar(xx,yp); hold on; plot(xx,p0)