[R] Kumaraswamy distribution

[Mike Lawrence]

dkumar = function(x,a,b) a*b*(x^(a-1))*((1-x^a)^(b-1))
pkumar = function(x,a,b) 1-(1-x^a)^b

(I've based this entirely on the wikipedia entry on the Kumaraswamy
distribution [http://en.wikipedia.org/wiki/Kumaraswamy_distribution],
so best to check both my replication of the formula there and the
accuracy of the wikipedia entry itself)

On Tue, May 12, 2009 at 6:37 AM, Debbie Zhang <debbie0621 at hotmail.com> wrote:
>
> Dear R users,
>
> Does anyone know how to write function for Kumaraswamy distribution in R? Since I cannot write dkumar, pkumar, etc. in R.
>
>
>
> Please help.
>
>
>
> Thanks a lot,
>
> Debbie
>
> _________________________________________________________________
> [[elided Hotmail spam]]
>
>        [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



-- 
Mike Lawrence
Graduate Student
Department of Psychology
Dalhousie University

Looking to arrange a meeting? Check my public calendar:
http://tr.im/mikes_public_calendar

~ Certainty is folly... I think. ~