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biometrics (version 1.0.3)

A Package for Biometrics and Modelling

Description

A system of functions and datasets to carry out quantitative analyses in the biological sciences. The package facilitates data management, exploratory analyses, and model assessment. Although it currently focuses on forest ecology, silviculture and decision-making, most of the package functions are applicable across several disciplines, including economics, environmental science, and healthcare.

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Version

Install

install.packages('biometrics')

Monthly Downloads

562

Version

1.0.3

License

GPL (>= 3)

Homepage

https://eljatib.com

Maintainer

Christian Salas-Eljatib

Last Published

March 3rd, 2026

Functions in biometrics (1.0.3)

Contiene mediciones de material leñoso muerto en una unidad de muestreo de linea.

Function to computes the result of the Curtis's allometric model.

densidadcanelo2

Densidad media en distintos tratamientos de raleo en Drymis winteri de Chile.

Mortality of lianas (vines) in tropical forests

Datos de mortalidad de lianas en árboles tropicales

Function that computes the result of the modified Gompertz's model.

Function to compute the result of the Gompertz allometric model.

A simple linear interpolation function applicable to two vectors (\(X\) and \(Y\)), when the first element of \(Y\) is missing.

Lista de árboles con variables medidas (más realista) en una parcela de muestreo, establecida en una plantación de Eucalyptus globulus.

Function that computes the result of the Hossfeld allometric model.

Lista de árboles con todas las variables medidas en una parcela de muestreo, establecida en una plantación de Eucalyptus globulus.

Tree-list (realistic-) data in a sample plot established in a Eucalyptus globulus plantation in southern Chile.

Diameter growth increments of a tropical tree species in Hawaii

Incremento corriente anual en diámetro de una especie tropical en Hawaii

Tree spatial coordinates in a large sample plot in Fennoscandia

Function to compute the result of the simple linear inverse model.

Function to compute basal area of a tree

A simple linear interpolation function applicable to two vectors (\(X\) and \(Y\)), when the second element of \(Y\) is missing.

A function having the mathematical expression of the Logistic modified model.

A function having the mathematical expression of the Logistic model.

Function to computes the result of the Curtis's allometric model.

Function to computes the stem diameter of a tree according to the Kozak (1988) taper equation.

Function to computes the stem diameter of a tree according to the Kozak (2004) taper equation.

A function having the mathematical expression of the Meyer model.

Function to computes the stem diameter of a tree according to the log-transformed Kozak (1988) taper equation.

Tree volume for Pinus pinaster in the Baixo-Mino, Galicia, Spain

A function having the mathematical expression of the Michaelis-Menten model.

Function to estimates the parameters of the Weibull probability density function using the method of moments

A function having the mathematical expression of the Naslund model.

Mortalidad en bosques, y variables climáticas y de estructura forestal en California (USA)

Extract the n-th element from a list

Function that computes the result of the Ogawa allometric model.

Climatic, forest structure and forest mortality variables in California (USA)

Volumen individual de árboles de Pinus pinaster en Galicia, España

Tree-level variables of several sample plots of invasive Pinus spp in Chile

Function to computes the result of the power model, as a classical allometric functional form.

Sampling plots data from a Pinus radiata plantation near Capitán Pastene, La Araucanía region, Chile.

Population of stand-volume for 400 elements.

Datos a nivel de árbol de parcelas de muestreo en plantaciones de Pinus radiata

Function that computes the result of the Schnute allometric model.

Function that computes the result of the Ratkowsky allometric model.

Población de 400 elementos de la variable volumen de bosque

A function having the mathematical expression of the Naslund model.

Maximum plant size in the Hawaiian archipelago

Variables a nivel de árbol en parcelas de muestreo de Pinus spp en Chile.

standtabCoihue2

Tabla de rodal para bosque de Nothofagus dombeyi (coihue)

A function having the mathematical expression of the Sibbesen model.

Function that computes the result of the Stage allometric model.

A function having the mathematical expression of the Johnson-Schumacher model.

Stand table for a Nothofagus dombeyi (coihue) forest

Tablas de rodal para bosques de Nothofagus alpina (raulí)

Stand tables for Nothofagus alpina (raulí) forests

List of botanical attributes of plant species

Temporal tree locations within a sample plot in the Vienna woods

Tree locations within sample plots in an experimental forest in Austria

Carrasco polynomial function

A function having the mathematical expression of the Strand model.

Function to compute stand-level variables for a given imputed-tree-list.

A function having the mathematical expression of the Strand model.

Crecimiento en diámetro y altura de árboles muestra de Grand-fir.

Stand table for Nothofagus obliqua (roble) secondary forests

Tabla de rodal media para renovales de Nothofagus obliqua (roble)

Datos de ahusamiento de Eucalyptus regnans

Diameter and height growth of Grand-fir sample trees.

Tree-list data from a forest sampling work

Function to compute the U-estimator for a sorted random variable, measured in a given sample plot.

Tree-level volume by species in the Rucamanque forest

Lista de árboles en un muestreo forestal

Compute volume of objects

Function to compute descriptive statistics at tree-level, segregated by a factor (factvar) per sample plot.

Smoothed tree list data from permanent sample plots

Tree-level information of forest plots across the Hawaiian archipelago.

Long term tree-list data from permanent sample plots

Volumen a nivel de árbol para especies nativas del bosque de Rucamanque

Tree-level remeasurements for a sample plot in a Pinus radiata plantation

A function having the mathematical expression of the Weibull allometric model.

A function having the mathematical expression of the Wykoff model.

Function that fits a list of models on a given dataframe.

Taper equation by Biging

Contains tree-level biomass data for four species in Canada.

Function to compute the result of the asymptotic regression model, as an allometric functional form.

Assign species botanical information to a data frame

Function for building a barplot for one or two factors

Predicts the variable of interest for each model of the list

A function having the mathematical expression of the Bertalanffy-Richards model.

Compute taper volume

Function to compute a dominant stand-level variable based on a sample plot data.

Contains coarse woody debris measurement in a unit of line intersect sampling.

Biomasa a nivel de árbol para cuatro especies arbóreas de Canadá

Function to computes the diameter of the tree of average basal area.

Function to computes the result of the original Curtis's allometric model.

Tree-level data from a sample plot established in a Eucalyptus globulus plantation