Question re: ecdf

I've been looking for a particular feature in the above MATLAB function but haven't found exactly what I'm looking for. I'm looking for a function that can take a particular input, x, and return the estimated p-value corresponding to a set of empirical data. What I'm looking for is analogous to the normcdf function where you give it an input and it will return a probability corresponding to the normal distribution.

[Akira Agata]

You want to obtain CDF (which normcdf function generates) or p-value used in hypothesis testing? If what you want is empirical CDF, you can do it by combining ecdf function and some interpolation method.

[Jared]

Looks like this sequence of commands below does what I was looking for.

[f,x]=ecdf(y);
mu=0.5000;
CDFmu=max(f(x<=mu))*100;