[R] Discrete random variable

ripley@stats.ox.ac.uk ripley at stats.ox.ac.uk
Mon Jul 1 12:09:39 CEST 2002

On Mon, 1 Jul 2002 tlorino at vet-alfort.fr wrote:

> I would create a function rdiscrete that returns the value of a discrete random

There already is a function rdiscrete in package e1071 which does what I
would expect a function of that name to do.

> variable X defined on a subset which can change, and for the same probability for
> the issue, eg:
> X could sometimes take a value in the subset {2,3,4} with probability 1/3 for each
> issue,
> and sometimes X could take a value in the subset {2,3,4,5,6} with probability
> 1/5 for each
> issue,
> etc.
> The function should have one parameter only: a vector, composed by the values of
> the definition subset of X.

?sample, specifically sample(subset, 1).

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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