I certainly second all Jeff's comments. **HOWEVER** : http://www.tandfonline.com/doi/pdf/10.1080/00401706.1978.10489610
IIRC, DUD's provenance is old, being originally a BMDP feature. -- Bert On Mon, Apr 1, 2013 at 10:59 AM, Jeff Newmiller <jdnew...@dcn.davis.ca.us>wrote: > a) Read the Posting Guide. It will tell you things like: > 1) Don't post in HTML format. Adjust your email client appropriately. > 2) Don't repost. Your emails are all there, looking silly next to each > other. > 3) Use the search facilities yourself, such as RSiteSearch(). > > b) Regarding your "DUD" algorithm, it doesn't sound familiar. There are > many algorithms that don't use derivatives for optimization so it isn't > clear that this is a referenceable label. The help file for nls mentions > two algorithms that don't require derivatives. You might want to review the > CRAN Task View on Optimization and Mathematical Programming if you want to > know more about what is available in CRAN and base R. > --------------------------------------------------------------------------- > 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. > > qi A <send2...@gmail.com> wrote: > > >SAS has DUD (Does not Use Derivatives)/Secant Method for nonlinear > >regression, does R offer this option for nonlinear regression? > > > >I have read the helpfile for nls() and could not find such option, any > >suggestion? > > > >Thanks, > > > >Derek > > > > [[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. > > ______________________________________________ > 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.
