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TapeR  

Flexible Tree Taper Curves Based on Semiparametric Mixed Models
View on CRAN: Click here


Download and install TapeR package within the R console
Install from CRAN:
install.packages("TapeR")

Install from Github:
library("remotes")
install_github("cran/TapeR")

Install by package version:
library("remotes")
install_version("TapeR", "0.5.3")



Attach the package and use:
library("TapeR")
Maintained by
Christian Vonderach
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2013-06-24
Latest Update: 2023-08-16
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>.
How to cite:
Christian Vonderach (2013). TapeR: Flexible Tree Taper Curves Based on Semiparametric Mixed Models. R package version 0.5.3, https://cran.r-project.org/web/packages/TapeR. Accessed 26 Aug. 2026.
Previous versions and publish date:
(2026-07-09 08:27), 0.3.0 (2013-06-24 10:58), 0.3.2 (2013-12-14 17:54), 0.3.3 (2015-08-10 10:23), 0.5.0 (2022-01-11 23:52), 0.5.1 (2023-02-10 16:20), 0.5.2 (2023-02-25 08:30)
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Complete documentation for TapeR
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