[R] discrete probability distribution

[Matthias Kohl]

Hi,

have a look at
http://mathworld.wolfram.com/GeometricDistribution.html
respectively
http://mathworld.wolfram.com/NegativeBinomialDistribution.html
with r = 1.

In R have a look at
?rnbinom
with n = 1 and in your case: prob = 1-p

hth
Matthias

>Hi
>
>I want to sample from a discrete random variable X,  defined on
>the  non-negative integers, with
>
>prob(X=0) = (1-p)
>prob(X=1) = (1-p)*p
>...
>prob(X=i)=(1-p)*p^i
>...
>
>
>
>Before reinventing the wheel,
>is there a ready-made R function to give me such a thing?
>
>
>--
>Robin Hankin
>Uncertainty Analyst
>National Oceanography Centre, Southampton
>European Way, Southampton SO14 3ZH, UK
>  tel  023-8059-7743
>
>______________________________________________
>R-help at stat.math.ethz.ch mailing list
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>  
>


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