[求助]怎样画数组中各个数的出现概率的直方图

[songzhouran]

好像hist只能画出现的次数，那换成出现概率怎么办呢？:confused:

[slgu]

如：
x=randn(50);
[f,h]=hist(x(:))
bar(h,f,1)
or
f=f/2500;
bar(h,f,1)

[xiezhh]

data=normrnd(0,1,1000,1);
[fp,xp]=ecdf(data);
ecdfhist(fp,xp);