How to compute a gaussian random noise with Matlab R2010a ?

2013 5 30
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How to compute a gaussian random noise with Matlab R2010a ? I saw "normrnd" for Matlab 2013 but it des not exist in Matlab 2010. Another solution?

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Adrien
Adrien 2013-5-30
I mean, I want to add noise to simulated data, hence I need to create a vector of length N with gaussianly-distributed data.

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Iain
Iain 2013-5-30

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If you mean generate random numbers in a gaussian distribution, whats wrong with randn()?

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Adrien
Adrien 2013-5-30

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As far as a see randn() is centered around 0.5 (this is not a pproblem) but is limited between 0 and 1, isn't it: it never gives any negative or >1 numbers, hence randn() seems to be a "truncated gaussian". I would like a "non-truncated" one if it exists.

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Iain
Iain 2013-5-30
You're looking at rand, which is top hat 0 to 1. randn is gaussian, with mean 0 and sigma of 1.

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Adrien
Adrien 2013-5-30

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Mea culpa I had written "rand" instead of "randn" (even if I had read "randn"), so thanks the problem seems to be solved ;)

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