nlmrt: Functions for Nonlinear Least Squares Solutions

Replacement for nls() tools for working with nonlinear least squares problems. The calling structure is similar to, but much simpler than, that of the nls() function. Moreover, where nls() specifically does NOT deal with small or zero residual problems, nlmrt is quite happy to solve them. It also attempts to be more robust in finding solutions, thereby avoiding 'singular gradient' messages that arise in the Gauss-Newton method within nls(). The Marquardt-Nash approach in nlmrt generally works more reliably to get a solution, though this may be one of a set of possibilities, and may also be statistically unsatisfactory. Added print and summary as of August 28, 2012.

AuthorJohn C. Nash [aut, cre]
Date of publication2016-07-25 23:48:08
MaintainerJohn C. Nash <nashjc@uottawa.ca>
LicenseGPL-2
Version2016.3.2

View on R-Forge

Files

nlmrt/DESCRIPTION
nlmrt/NAMESPACE
nlmrt/NEWS
nlmrt/R
nlmrt/R/model2grfun.R
nlmrt/R/model2jacfun.R
nlmrt/R/model2resfun.R
nlmrt/R/model2ssfun.R
nlmrt/R/modgr.R
nlmrt/R/modss.R
nlmrt/R/nlfb.R
nlmrt/R/nlmrt.R
nlmrt/R/nlxb.R
nlmrt/R/wrapnls.R
nlmrt/build
nlmrt/build/vignette.rds
nlmrt/inst
nlmrt/inst/dev-codes
nlmrt/inst/dev-codes/f2f.R
nlmrt/inst/dev-codes/f2ftext.R
nlmrt/inst/dev-codes/form2resfromHadley.txt
nlmrt/inst/dev-codes/makeFun.R
nlmrt/inst/dev-codes/mod2res120429.zip
nlmrt/inst/dev-codes/model2resfun.R.120425
nlmrt/inst/dev-codes/model2resfun.R.save
nlmrt/inst/dev-codes/model2ssfun.R
nlmrt/inst/dev-codes/mytxtfn.R
nlmrt/inst/dev-codes/nlfb.R.130709
nlmrt/inst/dev-codes/nlmrttests.R
nlmrt/inst/dev-codes/nlsmn0.R
nlmrt/inst/dev-codes/nlsmn0.Rd
nlmrt/inst/dev-codes/nlsmn0b.R
nlmrt/inst/dev-codes/nlsmnc.R
nlmrt/inst/dev-codes/nlsmnc.Rd
nlmrt/inst/dev-codes/nlsmnq.R
nlmrt/inst/dev-codes/nlsmnq.Rd
nlmrt/inst/dev-codes/nlxb.R.130710
nlmrt/inst/dev-codes/nlxbreloff.R
nlmrt/inst/dev-codes/nt.R
nlmrt/inst/dev-codes/ntst.R
nlmrt/inst/dev-codes/seboundsnlmrtx.R
nlmrt/inst/dev-codes/summary.pg.R
nlmrt/inst/doc
nlmrt/inst/doc/nlmrt-vignette.R
nlmrt/inst/doc/nlmrt-vignette.Rnw
nlmrt/inst/doc/nlmrt-vignette.pdf
nlmrt/inst/examples
nlmrt/inst/examples/baglivo.R
nlmrt/inst/examples/bass2.R
nlmrt/inst/examples/bass2.csv
nlmrt/inst/examples/eshl.R
nlmrt/inst/examples/fungi.R
nlmrt/inst/examples/gfire.R
nlmrt/inst/examples/hs25.R
nlmrt/inst/examples/kannan.R
nlmrt/inst/examples/meyers.R
nlmrt/inst/examples/onion.R
nlmrt/inst/examples/pasture.R
nlmrt/inst/examples/ratgambier.csv
nlmrt/inst/examples/ratpurnong.csv
nlmrt/inst/examples/raturadia.csv
nlmrt/inst/examples/ratvirginia.csv
nlmrt/man
nlmrt/man/coef.nlmrt.Rd nlmrt/man/model2grfun.Rd nlmrt/man/model2jacfun.Rd nlmrt/man/model2resfun.Rd nlmrt/man/model2ssfun.Rd nlmrt/man/modgr.Rd nlmrt/man/modss.Rd nlmrt/man/nlfb.Rd nlmrt/man/nlmrt-package.Rd nlmrt/man/nlxb.Rd nlmrt/man/print.nlmrt.Rd nlmrt/man/summary.nlmrt.Rd nlmrt/man/wrapnls.Rd
nlmrt/vignettes
nlmrt/vignettes/nlmrt-vignette.Rnw
nlmrt/vignettes/nlpd.bib

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