Finding and not unnecessarily duplicating existing functionality is important also from a user perspective. Negative binomial regression provides a somewhat extreme example of existing overlap between packages, with the scope that this creates for confusing users, especially as the notation is not consistent between these different implementations.
In addition to MASS::glm.nb(), note msme::negbinomial(), aod::negbin() and gamlss::gamlss(). The gamlss function fits two different types of NB model, either family = NBI (quadratic; var = mu(1 + sigma * mu)) as I think for all the functions above, or family=NBII (linear; var = mu(1 + sigma)). Also note the somewhat special purpose function glmnb.fit() in the stat mod package, which requires preliminary setup steps. John Maindonald email: john.maindon...@anu.edu.au<mailto:john.maindon...@anu.edu.au> phone : +61 2 (6125)3473 fax : +61 2(6125)5549 Centre for Mathematics & Its Applications, Room 1194, John Dedman Mathematical Sciences Building (Building 27) Australian National University, Canberra ACT 0200. On 28/07/2014, at 8:00 pm, Darren Norris wrote: From: Darren Norris <doo...@hotmail.com<mailto:doo...@hotmail.com>> Subject: Re: [Rd] [Wishlist] a 'PackageDevelopment' Task View Date: 28 July 2014 6:19:08 am AEST To: <r-devel@r-project.org<mailto:r-devel@r-project.org>> Hi Luca, Based on previous comments seems like 1) there should be a "multi-functional"/"general" category to cover packages like devtools 2) I think finding existing function code ( e.g in cran packages / github ) is necessary and saves many hours in package development (no one wants to develop a package and then discover they have just reinvented the wheel). So including packages like sos seems justified and helpful. Best, Darren -- View this message in context: http://r.789695.n4.nabble.com/Wishlist-a-PackageDevelopment-Task-View-tp4694537p4694625.html Sent from the R devel mailing list archive at Nabble.com<http://nabble.com/>. [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel