The hypergeo package should be able to deal with this, although the function you specify below looks like a degenerate case (if I understand it correctly) so the convergence rate is likely to be slow.
Let me know how you get on best wishes Robin (author of hypergeo) Jarle Brinchmann wrote:
The dhyper etc deal with the hypergeometric _distribution_ while what you appear to want have is the hypergeometric special function (the connection is that the regular hypergeometric function is the generating function for the hypergeometric distribution if I recall correctly). Anyway, what you need, I believe, is the hypergeo library from CRAN. Cheers, Jarle. On Wed, Dec 3, 2008 at 9:17 AM, Zakaria, Roslinazairimah - zakry001 <[EMAIL PROTECTED]> wrote:Hi, I hope somebody can help me on how to use the hypergeometric function. I did read through the R documentation on hypergeometric but not really sure what it means. I would like to evaluate the hypergeometric function as follows: F((2*alpha+1)/2, (2*alpha+2)/2 , alpha+1/2, betasq/etasq). I'm not sure which function should be used- either phyper or qhyper or dhyper Where alpha <- .75; beta1 <- 7 ; beta2 <- 5.5; etasq <- ((beta1+beta2)/(2*beta1*beta2*(1-rho))) ^2 betasq <- ((beta1-beta2)^2+4*beta1*beta2*rho)/(4*beta1^2*beta2^2*(1-rho)^2) Thank you so much for your help.
-- Robin K. S. Hankin Uncertainty Analyst University of Cambridge 19 Silver Street Cambridge CB3 9EP 01223-764877 ______________________________________________ R-help@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.
