It was a documentation error that got fixed in the latest version (June 30, 2008) of the JAGS manual.
Reza On Wed, Jun 25, 2008 at 6:20 PM, Ben Bolker <[EMAIL PROTECTED]> wrote: > Seyed Reza Jafarzadeh <srjafarzadeh <at> gmail.com> writes: > >> >> Hello, >> >> In WinBUGS 1.4 manual >> (http://www.mrc-bsu.cam.ac.uk/bugs/winbugs/manual14.pdf), the gamma >> density is presented as dgamma(r,mu) where r and mu are the shape and >> rate parameters, respectively. In JAGS (rjags) manual version 1.0.2, >> May 9, 2008 >> (http://www-fis.iarc.fr/~martyn/software/jags/jags_user_manual.pdf), >> on page 26 the gamma density is presented as dgamma(mu,r) instead of >> dgamma(r,mu). Since JAGS uses the BUGS language, I was wondering if >> this is a typo or it is in fact different from WinBUGS. >> > > I don't know, but I would suggest (1) trying a couple of little > simulations to try it out for yourself -- for example with > the following BUGS code > > mu <- 1 > r <- 1 > x ~ dgamma(mu,r) > > and see what the distribution looks like. > > and (2) e-mailing Martyn Plummer, the author (since it seems > likely that this is a documentation bug, he probably would > like to hear from you) > > Ben Bolker > > ______________________________________________ > 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. > ______________________________________________ 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.
