Re: Applying Additive Gaussian Noise with standard deviation
- To: mathgroup at smc.vnet.net
- Subject: [mg82259] Re: Applying Additive Gaussian Noise with standard deviation
- From: Bill Rowe <readnewsciv at sbcglobal.net>
- Date: Tue, 16 Oct 2007 03:32:49 -0400 (EDT)
On 10/15/07 at 1:24 AM, Tara.Ann.Lorenz at gmail.com wrote:
>I am modeling action potentials in Mathematica and need to vary both
>the mean current and noise amplitude (using additive Gaussian noise
>with standard deviation). Any suggestions on how to implement these
>commands in Mathematica?
If you are using version 6, you can generate a single normal
deviate using
RandomReal[NormalDistribution[0, 1]]
or an array of n normal deviates using
RandomReal[NormalDistribution[0, 1], n]
In these examples, I've assumed a zero mean and unity standard
deviation. Look up NormalDistribution and RandomReal for more details.
If you are using an earlier version of Mathematica, first do:
<<Statistics`
then
Random[NormalDistribution[0, 1]]
will generate a single normal deviate
and
Table[Random[NormalDistribution[0, 1]],{n}]
will create an array of n normal deviates
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