dhcurve package bundles a number of functions that allow to model ‘Diameter Height Curves’ starting from a dataset of tree measures (tree species, location, perimeter and height). The final result is a dataset that provides an estimated height for each combination of tree species, location and perimeter, or a dataset that provides for each combination of tree species and location the parameters A, B and C of the model curve Height = A + Blog (Perimeter) + Clog (Perimeter)2.
The package is written in Dutch.
An English poster on this package, presented at the International Statistical Ecology Conference in the University of St. Andrews in 2018, is available here.
dhcurve from the INBO universe, start a new R session and run this code (before loading any packages):
# Enable the INBO universe (not needed for INBO employees, as this is the default setting) options( repos = c( inbo = "https://inbo.r-universe.dev", CRAN = "https://cloud.r-project.org" ) ) # Install the packages install.packages("dhcurve")
dhcurve from GitHub, start a new R session and run this code (before loading any packages):