Hello again Wendy, Actually, the simex package is probably a more useful suggestion...
http://www.stat.uni-muenchen.de/~helmut/Texte/Simex_Rnews.pdf Michael On 29 November 2010 13:55, Michael Bedward <michael.bedw...@gmail.com> wrote: >>> In case you haven't see it, the glm function accepts an optional >>> weights argument. >>> >> >> Thanks for the reply. But the philosopy behind weighting is the assumption >> of unequal variance in the y values. In normal regression one assumes that >> the x values are known without error >> >> Wendy > > Sorry Wendy - I posted my reply prior to engaging my brain (ie. didn't > read your question properly). > > You're talking about Model II / major axis type methods. The smatr > package might cater for what you're trying to do. > > Hope this helps (more). > > Michael > ______________________________________________ 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.
