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nlmrt  

Functions for Nonlinear Least Squares Solutions
View on CRAN: Click here


Download and install nlmrt package within the R console
Install from CRAN:
install.packages("nlmrt")

Install from Github:
library("remotes")
install_github("cran/nlmrt")

Install by package version:
library("remotes")
install_version("nlmrt", "2016.3.2")



Attach the package and use:
library("nlmrt")
Maintained by
John C. Nash
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2012-08-12
Latest Update: 2016-03-04
Description:
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.
How to cite:
John C. Nash (2012). nlmrt: Functions for Nonlinear Least Squares Solutions. R package version 2016.3.2, https://cran.r-project.org/web/packages/nlmrt. Accessed 05 Mar. 2026.
Previous versions and publish date:
2012-8.11 (2012-08-12 17:24), 2012-8.12 (2012-08-13 18:49), 2012-12.16 (2012-12-17 10:47), 2013-8.10 (2013-08-11 18:56), 2013-9.24 (2014-05-05 07:16), 2013-9.25 (2014-12-05 23:48)
Other packages that cited nlmrt R package
View nlmrt citation profile
Other R packages that nlmrt depends, imports, suggests or enhances
Complete documentation for nlmrt
Functions, R codes and Examples using the nlmrt R package
Some associated functions: coef.nlmrt . model2grfun . model2jacfun . model2resfun . model2ssfun . modgr . modss . nlfb . nlmrt-package . nlxb . print.nlmrt . summary.nlmrt . wrapnls . 
Some associated R codes: model2grfun.R . model2jacfun.R . model2resfun.R . model2ssfun.R . modgr.R . modss.R . nlfb.R . nlmrt.R . nlxb.R . wrapnls.R .  Full nlmrt package functions and examples
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