MATLAB: Obtaining same values at avery simulation using rand function

randomsimulation

I'm building some simulations with matlab and I use rand function. I would obtain at every run, the same results. I read somewhere I have to set the seed of rand function. I tried using
s = RandStream('mcg16807', 'seed', 0)
RandStream.setGlobalStream(s);
but it didn't work.Maybe I made some mistake.

Best Answer

I think you should use the newer rng
    rng default;
    x = randn(100,1);
    rng default
    y = randn(100,1);
    max(abs(x-y))
x and y are the same sequence.
In general, you can capture the random generator settings and resuse them
   S = rng;
   x = randn(100,1);
   rng(S)
   y = randn(100,1);
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