lfmc

A dataset containing the leaf.type, time, plot, site and lfmc (live fuel mass concentration)

datasets

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.

Fernando Miguez

nlraa

Nonlinear Regression for Agricultural Applications

Jos<c3><a9> Pinheiro

Douglas Bates

R-core 

lfmc function

A data frame with 247 rows and 5 variables:<dl class="dl-horizontal">
 <dt>leaf.type</dt><dd>-factor- Species for which data was recorded ("Grass E", "Grass W", "M. spinosum", "S. bracteolactus")</dd>
 <dt>time</dt><dd>-integer- time in days 1-80</dd>
 <dt>plot</dt><dd>-factor- plot with levels 1-6 (discrete)</dd>
 <dt>site</dt><dd>-factor- either P ("East") or SR ("West")</dd>
 <dt>lfmc</dt><dd>-numeric- Live fuel moisture content (percent)</dd>
 <dt>group</dt><dd>grouping for regression</dd>
</dl>

Format

Live fuel moisture content — lfmc

A data frame with 247 rows and 5 variables:<dl class='dl-horizontal'>
 <dt>leaf.type</dt><dd>-factor- Species for which data was recorded ("Grass E", "Grass W", "M. spinosum", "S. bracteolactus")</dd>
 <dt>time</dt><dd>-integer- time in days 1-80</dd>
 <dt>plot</dt><dd>-factor- plot with levels 1-6 (discrete)</dd>
 <dt>site</dt><dd>-factor- either P ("East") or SR ("West")</dd>
 <dt>lfmc</dt><dd>-numeric- Live fuel moisture content (percent)</dd>
 <dt>group</dt><dd>grouping for regression</dd>
</dl>

lfmc: Live fuel moisture content

Description

Usage

Arguments

Format