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From: | Martin Jansche |
Subject: | Re: [Help-gsl] Question to random number generation |
Date: | Thu, 17 May 2007 14:23:07 -0400 |
On 5/17/07, Alexander Dietz <address@hidden> wrote:
I would like to draw numbers from a multivariate Gaussian distribution, given a covariance matrix. Is there such a function that can do this?
There is no such function in GSL, but all the ingredients are there. See http://en.wikipedia.org/wiki/Multivariate_normal_distribution#Drawing_values_from_the_distribution for the general idea, and gsl_linalg_cholesky_decomp() for the Cholesky decomposition. -- mj
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