nlraa: Nonlinear Regression for Agricultural Applications

Additional nonlinear regression functions using self-start (SS) algorithms. One of the functions is the Beta growth function proposed by Yin et al. (2003) <doi:10.1093/aob/mcg029>. There are several other functions with breakpoints (e.g. linear-plateau, plateau-linear, exponential-plateau, plateau-exponential, quadratic-plateau, plateau-quadratic and bilinear), a non-rectangular hyperbola and a bell-shaped curve. Eighteen new self-start (SS) functions in total. This package also supports the publication 'Nonlinear regression Models and applications in agricultural research' by Archontoulis and Miguez (2015) <doi:10.2134/agronj2012.0506>, a book chapter with similar material <doi:10.2134/appliedstatistics.2016.0003> and a publication by Oddi et. al. (2019) in Ecology and Evolution <doi:10.1002/ece3.5543>. The function 'nlsLMList' uses nlsLM for fitting, but it is otherwise almost identical to 'nlme::nlsList'. One of the main benefits is that these functions can be integrated in the modeling framework of the 'nlme' package. It also provides three vignettes with extended examples.

Version:	0.53
Depends:	R (≥ 3.5.0)
Imports:	knitr, nlme, stats
Suggests:	bbmle, emmeans, ggplot2, HydroMe, lattice, minpack.lm, nlstools, nls2, segmented
Published:	2020-01-13
Author:	Fernando Miguez [aut, cre], José Pinheiro [ctb, cph] (author of nlme::nlsList), Douglas Bates [ctb, cph] (author of nlme::nlsList), R-core [ctb, cph]
Maintainer:	Fernando Miguez <femiguez at iastate.edu>
BugReports:	https://github.com/femiguez/nlraa/issues
License:	GPL-3
NeedsCompilation:	no
Materials:	README
CRAN checks:	nlraa results

Downloads:

Linking:

Please use the canonical form https://CRAN.R-project.org/package=nlraa to link to this page.