Package: TapeR
Type: Package
Title: Flexible Tree Taper Curves Based on Semiparametric Mixed Models
Version: 0.5.3
Date: 2023-08-09
Authors@R: c(person(given = "Edgar", family = "Kublin", role = "aut"),
              person(given = "Johannes", family = "Breidenbach", role = c("ctb"),	
              email = "job@nibio.no"),
              person(given = "Christian", family = "Vonderach", role = c("ctb","cre"), 
              email = "christian.vonderach@forst.bwl.de")
					)
Description: Implementation of functions for fitting taper curves (a
        semiparametric linear mixed effects taper model) to diameter
        measurements along stems. Further functions are provided to
        estimate the uncertainty around the predicted curves, to
        calculate timber volume (also by sections) and marginal (e.g.,
        upper) diameters. For cases where tree heights are not
        measured, methods for estimating additional variance in volume
        predictions resulting from uncertainties in tree height models
        (tariffs) are provided.  The example data include the taper
        curve parameters for Norway spruce used in the 3rd German NFI
        fitted to 380 trees and a subset of section-wise diameter
        measurements of these trees. The functions implemented here are
        detailed in Kublin, E., Breidenbach, J., Kaendler, G. (2013)
        <doi:10.1007/s10342-013-0715-0>.
License: GPL (>= 2)
LazyLoad: yes
Depends: nlme, splines, pracma
Suggests: testthat
RoxygenNote: 7.2.3
Repository: https://vochr.r-universe.dev
Date/Publication: 2024-01-26 08:05:22 UTC
RemoteUrl: https://github.com/vochr/taper
RemoteRef: HEAD
RemoteSha: fe41528f8e9a0c27bbde5ba7514bc532676b3f59
NeedsCompilation: no
Packaged: 2026-10-01 09:29:00 UTC; root
Author: Edgar Kublin [aut],
  Johannes Breidenbach [ctb],
  Christian Vonderach [ctb, cre]
Maintainer: Christian Vonderach <christian.vonderach@forst.bwl.de>