[R] unexpected behaviour of rnorm()
Bob Wheeler
bwheeler at echip.com
Wed Nov 27 14:29:38 CET 2002
rziggurat() does not exhibit this behavior and is quite a
bit faster.
Robin Hankin wrote:
>
> Hello everyone.
>
> If I do
>
> f <- function(n){max(rnorm(n))}
> plot(sapply(rep(5000,4000),f)) #[this takes my PC about 30 seconds]
>
> then I get something quite unexpected: gaps in the distribution. For
> me, the most noticable one is at about 3.6.
>
> Do others get this? Is it an optical illusion? It can't be right,
> can it? Or maybe I just don't understand the good ol' Gaussian very
> well.
>
> anyone got an explanation?
>
> [linux redhat 7.1; R-1.6.1]
>
> --
>
> Robin Hankin, Lecturer,
> School of Geography and Environmental Science
> Tamaki Campus
> Private Bag 92019 Auckland
> New Zealand
>
> r.hankin at auckland.ac.nz
> tel 0064-9-373-7599 x6820; FAX 0064-9-373-7042
>
> as of: Wed Nov 27 09:15:00 NZDT 2002
> This (linux) system up continuously for: 454 days, 14 hours, 57 minutes
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--
Bob Wheeler --- (Reply to: bwheeler at echip.com)
ECHIP, Inc.
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