Functions for Forest Biometrics
Plot circles of a specified radius
Evaluate the fit of a tree diameter distribution
Fit a Height-Diameter model to forest tree data using functions of pac...
Available 2- and 3- parameter H-D model functions to be used by functi...
Estimate stand density using a Horvitz--Thompson-like estimator
Estimate forest characteristics of interest in circular plot sampling ...
Impute missing tree heights into a forest data using a nonlinear (mixe...
A spaghetti plot of grouped data
Functions of Lauri Mehtatalo
The Four-parameter Logit-logistic Distribution
A whiskers type residual plot
Solve a Nonlinear Equation Using Newton-Raphson algorithm.
Solve a Systems of Nonlinear Equations Using the Newton's Method
The Percentile-based Distribution
Diagnostic plot a Height-Diameter model residuals
The Variable Form-Factor Volume Model
Individual tree volume functions for Finland
Normal QQ-plot of a fitted H-D model
Properties of sample quantiles from a tree population described by the...
Recovery of Weibull parameters of tree diameter distribution using mea...
The Weibull scale parameter for the given mean/median diameter and sha...
Solve a simple equation using a step halving algorithm.
Functions for different purposes related to forest biometrics, including illustrative graphics, numerical computation, modeling height-diameter relationships, prediction of tree volumes, modelling of diameter distributions and estimation off stand density using ITD. Several empirical datasets are also included.