From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk>

Date: Mon 27 Jun 2005 - 17:59:44 EST

Date: Mon 27 Jun 2005 - 17:59:44 EST

On Mon, 27 Jun 2005, Göran Broström wrote:

> On Sun, Jun 26, 2005 at 11:28:04PM +0100, Prof Brian Ripley wrote:

*>>> Here gamma is the usual gamma function, see ?gamma. (I notice in the R
**>>> documentation of the Weibull distribution that "E(X) = b Gamma(1+1/a)",
**>>> which is an error; the G should be g (lowercase).)
**>>
**>> It is not an error. R's function gamma() is said to implement
**>> \eqn{\Gamma}{Gamma}: `see ?gamma'!
**>
**> I see; it's supposed to be mathematics, not R code (of course, since a
**> '*' otherwise is missing!). But then the documentation is at least
**> somewhat inconsistent, because in the variance expression, 'gamma' is used.
*

Yes, in the variance expression \Gamma is transliterated as 'gamma'. That is the only case I can find (e.g. the Beta,Chiqsuare,Fdist,GammaDist, NegBinomial,Tdist Rd files). I've made the variance expression consistent.

-- Brian D. Ripley, ripley@stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595Received on Mon Jun 27 18:04:22 2005______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html

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