Sorghum and Maize growth in Greece

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. Twenty eight (28) 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.c15> 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'.In addition, this release of the package provides functions for conducting simulations for 'nlme' and 'gnls' objects as well as bootstrapping. These functions are intended to work with the modeling framework of the 'nlme' package. It also provides four vignettes with extended examples.

Fernando Miguez

nlraa

Nonlinear Regression for Agricultural Applications

Caio dos Santos

José Pinheiro

Douglas Bates

R-core 

sm function

A data frame with 235 rows and 5 columns<dl>
 <dt>DOY</dt>
<dd>-integer- Day of the year 141-303</dd> <dt>Block</dt>
<dd>-integer- Block in the experimental design 1-4</dd> <dt>Input</dt>
<dd>-integer- Input level 1 (Low) or 2 (High)</dd> <dt>Crop</dt>
<dd>-factor- either F (Fiber Sorghum), M (Maize), S (Sweet Sorghum)</dd> <dt>Yield</dt>
<dd>-numeric- Biomass yield in Mg/ha</dd>
</dl>

Format

Sorghum and Maize growth in Greece — sm

A data frame with 235 rows and 5 columns<dl>
 <dt>DOY</dt>
<dd>-integer- Day of the year 141-303</dd>

 <dt>Block</dt>
<dd>-integer- Block in the experimental design 1-4</dd>

 <dt>Input</dt>
<dd>-integer- Input level 1 (Low) or 2 (High)</dd>

 <dt>Crop</dt>
<dd>-factor- either F (Fiber Sorghum), M (Maize), S (Sweet Sorghum)</dd>

 <dt>Yield</dt>
<dd>-numeric- Biomass yield in Mg/ha</dd>


</dl>

sm: Sorghum and Maize growth in Greece

Description

Usage

Arguments

Format

Details