Where can I find a package with an R implementation of the S-Plus "nlmib" general minimzation routine described in Venables & Ripley's "Modern Applie Statistics with S-Plus", 3rd Ed., pp 267 - 270? Thanks, David Stamps stamps.d.a at att.net -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- 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 _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Implementation of S-Plus "nlmib" routine in R
5 messages · David Stamps, John Fox, Jun Yan +2 more
Dear David,
At 10:43 AM 10/5/2002 -0400, David Stamps wrote:
Where can I find a package with an R implementation of the S-Plus "nlmib" general minimzation routine described in Venables & Ripley's "Modern Applie Statistics with S-Plus", 3rd Ed., pp 267 - 270?
The optimization functions in R and S-PLUS are a different. Take a look at nlm and optim in R. I hope that this helps, John ----------------------------------------------------- John Fox Department of Sociology McMaster University Hamilton, Ontario, Canada L8S 4M4 email: jfox at mcmaster.ca phone: 905-525-9140x23604 web: www.socsci.mcmaster.ca/jfox ----------------------------------------------------- -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- 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 _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
On Sat, 5 Oct 2002, David Stamps wrote:
Where can I find a package with an R implementation of the S-Plus "nlmib" general minimzation routine described in Venables & Ripley's "Modern Applie Statistics with S-Plus", 3rd Ed., pp 267 - 270?
David, R base has functions to do that. See ?nlm ?D and the reference therein. Jun Yan Department of Statistics Office: CSSC 4252 university of Wisconsin-Madison Tel: (608)262-7478 1210 W. Dayton St. Email: jyan at stat.wisc.edu Madison, WI 53706 URL: http://www.stat.wisc.edu/~jyan -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- 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 _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Try nlm and optim in the base package. Both of these are substitutes for the nlminb in splus, although optim is a more generic one with box constraints. Perhaps others can elaborate on this. -- Vele Samak http://www.velesamak.com -----Original Message----- From: owner-r-help at stat.math.ethz.ch [mailto:owner-r-help at stat.math.ethz.ch] On Behalf Of David Stamps Sent: Saturday, October 05, 2002 10:44 AM To: R-help at stat.math.ethz.ch Subject: [R] Implementation of S-Plus "nlmib" routine in R Where can I find a package with an R implementation of the S-Plus "nlmib" general minimzation routine described in Venables & Ripley's "Modern Applie Statistics with S-Plus", 3rd Ed., pp 267 - 270? Thanks, David Stamps stamps.d.a at att.net -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-. -.-.-.- 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 _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._. _._._._ -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- 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 _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
On Sat, 5 Oct 2002, David Stamps wrote:
Where can I find a package with an R implementation of the S-Plus "nlmib" general minimzation routine described in Venables & Ripley's "Modern Applie Statistics with S-Plus", 3rd Ed., pp 267 - 270?
The method="L-BFGS-B" option in optim() is a box-constrained quasi-Newton optimiser. I don't know if it's the same one as nlminb, but it works pretty well. There's also method="BFGS" for an unconstrained version that may be more efficient. -thomas -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- 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 _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._