nonlinear least square optimization
On Mon, 20 Dec 1999, Tony Q. Zhang wrote:
Hi, I've been using "nlregb" routine in splus3.4, but cannot find it here in R. Is it hidden in some library?
No. It is proprietary part of S-PLUS (not S).
Or there is a routine equivalent to it but with a different name? I'm planning to move part of my from S to R so that I can work comfortablely at home. Any suggestion is highly appreciated.
At present your only choice is the general optimizer nlm. However, general-purpose optimization routines often are as good as specialized nls routines unless the solution is a near-perfect fit. (R's nls uses nlm.) We are working on other options (I have prototypes running) so you may see more in a month or so.
Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272860 (secr) Oxford OX1 3TG, UK Fax: +44 1865 272595 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._