http://cran.r-project.org/web/packages/MASS/citation.html --------------------------------------------------------------------------- Jeff Newmiller The ..... ..... Go Live... DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go... Live: OO#.. Dead: OO#.. Playing Research Engineer (Solar/Batteries O.O#. #.O#. with /Software/Embedded Controllers) .OO#. .OO#. rocks...1k --------------------------------------------------------------------------- Sent from my phone. Please excuse my brevity.
On February 13, 2014 11:04:46 PM PST, jimj <j...@sfu.ca> wrote: >Thanks Dr. I did read the help page but maybe I just don't understand >enough >about contrasts to take what I need from it. It says: > >"If value supplies more than how.many contrasts, the first how.many are >used. If too few are supplied, a suitable contrast matrix is created by >extending value after ensuring its columns are contrasts (orthogonal to >the >constant term) and not collinear." > >I suppose what this means is that if the matrix is not extended then >there >is some type of problem with orthogonality? Perhaps my real question >should >be, why is a contrast matrix with only one column not suitable. > >Maybe I should read the book you are referring to. Can you provide a >reference? Thanks! > > > > > > >-- >View this message in context: >http://r.789695.n4.nabble.com/What-is-the-effect-of-how-many-in-the-contrast-function-tp4685294p4685300.html >Sent from the R help mailing list archive at Nabble.com. > >______________________________________________ >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.