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Discussion Groups | Matlab DSP | Seeds in random numbre generators...
Technical discussion about Matlab and issues related to Digital Signal Processing.
Seeds in random numbre generators... - Pramodh Narayanan - Sep 6 17:57:00 2002
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Hi! I just need to generate random numbers that follow some distribution like poisson, exponential,normal,etc. For these distributions there are functions available directly like poissrnd for poisson distribution, normrnd for normal distribution,etc. But every time u run them they give different sets of random numbers. How do I know what is the seed used to generate these numbers so that I can reuse the seed to generate them , if I want to. Thankx, Pramodh. |
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Re: Seeds in random numbre generators... - navaneetha krishnan - Sep 6 21:35:00 2002
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The functions poissrnd, normrnd... internally use rand or randn. You can check which one is used by looking into the function in an editor. You can set the seeds of rand or randn thereby making these wrapper functions repeatable. Navan --- Pramodh Narayanan <> wrote: > Hi! > > I just need to generate random numbers that follow > some distribution like poisson, > exponential,normal,etc. For these distributions > there > are functions available directly like poissrnd for > poisson distribution, normrnd for normal > distribution,etc. But every time u run them they > give > different sets of random numbers. How do I know what > is the seed used to generate these numbers so that I > can reuse the seed to generate them , if I want to. > > Thankx, > Pramodh. __________________________________________________ |
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Re: Seeds in random numbre generators... - Joe Sababa - Sep 8 16:24:00 2002
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Hi, Use the 'state' switch. See the help: >> help rand Joe BSTEX - Equation viewer for Matlab http://www.geocities.com/bstex2001 --- Pramodh Narayanan <> wrote: > Hi! > > I just need to generate random numbers that follow > some distribution like poisson, > exponential,normal,etc. For these distributions > there > are functions available directly like poissrnd for > poisson distribution, normrnd for normal > distribution,etc. But every time u run them they > give > different sets of random numbers. How do I know what > is the seed used to generate these numbers so that I > can reuse the seed to generate them , if I want to. > > Thankx, > Pramodh. __________________________________________________ |
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