kublin_nor: Taper model for spruce, pine, and birch for Norway with...

In JohannesRahlf/taperNO:

Taper model for spruce, pine, and birch for Norway with dynamic diameter input

Description

Based on Kublin et al. 2013. A flexible stem taper and volume prediction method based on mixed-effects B-spline regression. Eur J For Res. 132(5-6):983–997 and code in Kublin & Breidenbach (https://CRAN.R-project.org/package=TapeR).

Usage

kublin_nor(Hx = NULL, Hm, Dm, mHt, sp = 1, Dx = NULL, ...)

Arguments

Hx	height above ground where to return diameters (m)
Hm	height above ground of measured diameters (m)
Dm	measured diameters (cm)
mHt	measured tree height (m) above ground
sp	species
Dx	or diameters (cm) for which to return a height
...	parameters handed over to E_DHx_HmDm_HT.f or E_HDx_HmDm_HT.f

Details

Allows the use of multiple diameters measured at various points along the stem to estimate taper.

Value

When Hx is given: diameters at Hx (cm). When Dx is given: heights where d=Dx (m).

JohannesRahlf/taperNO documentation built on Feb. 17, 2025, 8:02 p.m.