[R] rmaxwell in C

[Yihui Xie]

rmaxwell() depends on rgamma(), so what you actually need is to
download R source (rgamma() might depend further on other functions,
though).

> library(VGAM)
> rmaxwell
function (n, a)
{
    if (!is.Numeric(n, posit = TRUE, allow = 1))
        stop("bad input for argument 'n'")
    if (any(a <= 0))
        stop("argument 'a' must be positive")
    sqrt(2 * rgamma(n = n, 1.5)/a)
}
<environment: namespace:VGAM>

Regards,
Yihui
--
Yihui Xie <xieyihui at gmail.com>
Phone: 515-294-6609 Web: http://yihui.name
Department of Statistics, Iowa State University
3211 Snedecor Hall, Ames, IA



On Fri, Mar 12, 2010 at 12:18 AM, 王杰彪 <tryshy at 163.com> wrote:
> Hi R useRs:
>
> How can I generate a random sample from Maxwell Distribution in C language?
> Since I know the function rmaxwell {VGAM}, I tried the function r2c {r2c}.
> But I still cannot find the source code.
>
> Thanks for your kind help.
>
> RegaRds,
>
> 2010-03-12
>
>
>
> Randel
>        [[alternative HTML version deleted]]
>
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