Estimate stand density using a Horvitz--Thompson-like estimator
Plot circles of a specified radius
Estimate forest characteristics of interest in circular plot sampling using a Horvitz--Thompson-like estimator
Solve a Nonlinear Equation Using Newton-Raphson algorithm.
Solve a Systems of Nonlinear Equations Using the Newton's Method
Breaking resistance (=bending strength) of birch wood samples
Increment core data of Scots pine trees
Available 2- and 3- parameter H-D model functions to be used by function fithd.
Individual tree characteristics and ALS data
Impute missing tree heights into a forest data using a nonlinear (mixed-effects) model.
A spaghetti plot of grouped data
Functions of Lauri Mehtatalo
The Four-parameter Logit-logistic Distribution
A whiskers type residual plot
Wood-decaying fungi carried by bark beetle individuals and their mites.
Sapling counts from sample plots of sapling stands in Finland.
Sapling counts from sample plots of sapling stands in Finland.
CO2 exchange of transplanted Sphagnum fuscum moss in a chronosequence of mires.
Individual tree volume modeling data for 8508 pine, spruce and birch trees in Finland
Fit a Height-Diameter model to forest tree data using functions of package nlme.
Solve a simple equation using a step halving algorithm.
Evaluate the fit of a tree diameter distribution
Individual tree volume functions for Finland
Effect of thinning on individual tree growth
Effect of thinning on individual tree growth for 62 trees.
Diagnostic plot a Height-Diameter model residuals
The Variable Form-Factor Volume Model
Normal QQ-plot of a fitted H-D model
Properties of sample quantiles from a tree population described by the percentile-based diameter distribution.
Increment core data of Scots pine trees
The Percentile-based Distribution
Recovery of Weibull parameters of tree diameter distribution using measured stand characteristics
Raw sample plot data of Scots pine in Ilomantsi, Finland.
The Weibull scale parameter for the given mean/median diameter and shape parameter.
Heights and diameters of Scots pine trees in Ilomantsi, Finland.
Productivity of stump lifting machines.