About random number generators

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ahmed abrous
ahmed abrous el 22 de Feb. de 2014
Respondida: ahmed abrous el 25 de Feb. de 2014
Hi everyboby
I want to create a program on simulink which use a random number box but I have seen that its output is repeated at each step of the simulation. So how can I change the seed of this program to get the good result.
I use actually matlab 2010a, and I tried rng bgut not working.
Thank you.

Respuesta aceptada

Lucas García
Lucas García el 22 de Feb. de 2014
As you have found out, using rng is the way to go with the current MATLAB version.
Although currently discouraged, you can use the former synthax for changing the seed with older MATLAB versions: http://www.mathworks.es/es/help/matlab/math/updating-your-random-number-generator-syntax.html
rand('seed', sd)
  1 comentario
ahmed abrous
ahmed abrous el 22 de Feb. de 2014
Yes, exactly, but I don't have Matlab 2013 on my computeur. Also I want to use uniform random number block on simulink, and when I read the help it says "Output is repeatable for a given seed". So the goal is to change this seed on simulink at each sample time of the simulation.

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Más respuestas (2)

Dishant Arora
Dishant Arora el 22 de Feb. de 2014
doc se_randomizeseeds
  3 comentarios
Dishant Arora
Dishant Arora el 22 de Feb. de 2014
You need to stop and change the seed before every simulation

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ahmed abrous
ahmed abrous el 25 de Feb. de 2014
It's okay for me with the Embedded Matlab Function and the seed change at every sample time. Thank you.

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