The thread you linked to regarding Levenberg-Marquardt's supposed lack of availability is from 2001; it has been possible to get to the MINPACK implementation of Levenberg-Marquardt within R via the package minpack.lm (http://cran.r-project.org/src/contrib/Descriptions/minpack.lm.html) since 2005.
---- Katharine Mullen mail: Department of Physics and Astronomy, Faculty of Sciences Vrije Universiteit Amsterdam, de Boelelaan 1081 1081 HV Amsterdam, The Netherlands room: T.1.06 tel: +31 205987870 fax: +31 205987992 e-mail: [EMAIL PROTECTED] homepage: http://www.nat.vu.nl/~kate/ On Fri, 7 Sep 2007, Jose Luis Aznarte M. wrote: > Hi! I'm translating some code from Matlab to R and I found a problem. > I need to translate Matlab's function 'lsqnonlin' > (http://www-ccs.ucsd.edu/matlab/toolbox/optim/lsqnonlin.html) into R, > and at the beginning I thought it would be the same as R's 'optim'. But > then I looked at the definition of 'lsqnonlin' and I don't quite see how > to make 'optim' to do the same thing. Does anyone have an idea? > This is apart from the fact that I would like to use the Levenberg > Marquardt algorithm which is not implemented in R (some discussion about > this: http://tolstoy.newcastle.edu.au/R/help/00b/2492.html). > Thank you! All the best, > > > -- -- > Jose Luis Aznarte M. http://decsai.ugr.es/~jlaznarte > Department of Computer Science and Artificial Intelligence > Universidad de Granada Tel. +34 - 958 - 24 04 67 > GRANADA (Spain) Fax: +34 - 958 - 24 00 79 > > ______________________________________________ > R-help@stat.math.ethz.ch 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@stat.math.ethz.ch 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.