May I suggest you consult your local statistician. For reasons that (s)he can answer, your request makes little sense.
Hint: Nonlinear regression is much different than linear regression: The design matrix -- and hence the variance of estimators -- is a function of the parameters being estimated. (But there may well be packages that are relevant -- the issue is your ability to use them properly) Cheers, Bert On Mon, Nov 14, 2011 at 10:52 AM, Johannes W. Dietrich < johannes.dietr...@ruhr-uni-bochum.de> wrote: > Is there a library that provides power calculation and sample size > estimation for nonlinear regression? > > The task is easy for linear regression with the "pwr" package, but I > can't find a method for nonlinear regression (estimated with the "nls" > package). > > -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > -- -- > -- Dr. Johannes W. Dietrich, M.D. > -- Laboratory XU44, Endocrine Research > -- Medical Hospital I, Bergmannsheil University Hospitals > -- Ruhr University of Bochum > -- Buerkle-de-la-Camp-Platz 1, D-44789 Bochum, NRW, Germany > -- Phone: +49:234:302-6400, Fax: +49:234:302-6403 > -- eMail: "j.w.dietr...@medical-cybernetics.de" > -- WWW: http://medical-cybernetics.de > -- WWW: http://www.bergmannsheil.de > -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > -- -- > > > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > -- Bert Gunter Genentech Nonclinical Biostatistics Internal Contact Info: Phone: 467-7374 Website: http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm [[alternative HTML version deleted]] ______________________________________________ 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.
