Obtaining same values at avery simulation using rand function
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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.
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Wayne King
le 14 Sep 2012
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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Plus de réponses (2)
Oleg Komarov
le 14 Sep 2012
Modifié(e) : Oleg Komarov
le 14 Sep 2012
You can use rng()
rng(1)
rand(1,5)
rng(1)
rand(1,5)
Or with your approach:
s = RandStream('mcg16807', 'seed', 0);
RandStream.setGlobalStream(s);
rand(1,5)
s = RandStream('mcg16807', 'seed', 0);
RandStream.setGlobalStream(s);
rand(1,5)
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