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Re: [Help-gsl] Re: Random number generation

From: Vibhuti Dave
Subject: Re: [Help-gsl] Re: Random number generation
Date: Wed, 06 May 2009 18:43:04 -0400
User-agent: Microsoft-Entourage/

Thank you for helping me out. I appreciate it.
Is there a way I can specify the range in which numbers are generated so
that the numbers are not generated between -inf to +inf

On 5/5/09 8:43 PM, "Carl Boettiger" <address@hidden> wrote:

> The number shouldn't be close to zero.  Divide by 600 and you'll have
> the mean, which will be close to zero.  Just sum a bunch of gaussian
> random numbers of standard deviation sigma and you expect a
> displacement of sqrt(2 sigma T), i.e. sqrt(1200) approx 34 -- you're
> simulating Brownian motion.
> -Carl
> On Tue, May 5, 2009 at 2:10 PM, Rodney Sparapani <address@hidden> wrote:
>> Vibhuti Dave wrote:
>>> Hello,
>>> I have attached the code that I am using to generate random numbers that
>>> have a Gaussian distribution with a mean value of 0.
>>> Ideally, if I generate these numbers and sum them up, the sum should be
>>> very
>>> close to 0 since it is a gaussian ditribution. I am using the function
>>> gsl_ran_gaussian to generate them. However, the mean value seems to be way
>>> off 0 when I run the program.
>>> Any idea why that might be happening?
>>> Thanks
>>> Vibhuti
>> What happens if you set mu = 0.?
>> _______________________________________________
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>> address@hidden

Vibhuti Dave
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