[R] Erlang distribution

[Trenkler, Dietrich]

> -----Original Message-----
> From:	Nils Aschenbruck 
> Sent:	Thursday, August 19, 2004 11:51 AM
> To:	r-help at stat.math.ethz.ch
> Subject:	[R] Erlang distribution
> 
> 
> Hello,
> 
> is there a packet that supports the Erlang distribution?
> 
> I want to use this distribution for tests against empirical data. Thus, is
> there a packet that also supports "fitdistr" (Maximum-likelihood fitting)
> for this distribution?
> 
	[Dietrich Trenkler]  Hi Nils,

	you do not need a special package because the Erlang is a special
gamma distribution.
	For instance

	"derlang" <- function(x, k, l = 1) {
	    f <- dgamma(x, k, l)
	    f
	}

	delivers the density of the Erlang(k,1) distribution.

	HTH

	D. Trenkler