TapeR

0.5.3

Flexible Tree Taper Curves Based on Semiparametric Mixed Models

2packages depend

2.8Kdownloads / year

9.5%test coverage

0/13checks pass

Overview

About

Maintained by Christian VonderachFirst published 2013-06-247 releasesCRAN page ↗

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.

Install

R (CRAN)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("TapeR", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-taper

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-TapeR

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-TapeR

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13NOTE

Failing flavors

NOTE r-devel-linux-x86_64-debian-clang
NOTE r-devel-linux-x86_64-debian-gcc
NOTE r-devel-linux-x86_64-fedora-clang
NOTE r-devel-linux-x86_64-fedora-gcc
NOTE r-devel-windows-x86_64
NOTE r-oldrel-macos-arm64
NOTE r-oldrel-macos-x86_64
NOTE r-oldrel-windows-x86_64
NOTE r-patched-linux-x86_64
NOTE r-release-linux-x86_64
NOTE r-release-macos-arm64
NOTE r-release-macos-x86_64
NOTE r-release-windows-x86_64

Slowest check: 3.5 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.01

9.5%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

NOTE2026-03-10
0 OK · 14 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 2 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 91%
Return-value docs: 100%
References docs: 31%

Downloads

2.8K

CRAN downloads in the past year

Rank #15,097 · ~8/day · ~236/mo

Releases R versions

Daily download trend is not available in this view yet.

15230 days

68790 days

2.8K1 year

Compare downloads with other packages →

Also on93 r2u3 autocran

Dependencies

Declared dependencies

2 external dependencies (excludes base and recommended)

Depends (3)

nlmesplinespracma

Imports (0)

none

LinkingTo (0)

none

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

2direct

0indirect

TapeS taperNOR

Code & Tests

Datasets

People & History

People (3)

Maintainer (1)

Christian Vonderach

Contributor, Maintainer · added in 0.5.0

Authors (1)

Edgar Kublin

Author

Contributors (2)

Christian Vonderach

Contributor, Maintainer · added in 0.5.0

Johannes Breidenbach

Contributor

Package Timeline

7 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
0.5.3Latest
2023-08-16 · current release · diff ↗
R
R 4.3.0 released · 2023-04-21
0.5.2
2023-02-25 · diff ↗
0.5.1
2023-02-10 · diff ↗
R
R 4.2.0 released · 2022-04-22
0.5.0
2022-01-11 · diff ↗
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03
0.3.3
2015-08-10 · diff ↗

Show 5 earlier events

R
R 3.2.0 released · 2015-04-16
R
R 3.1.0 released · 2014-04-10
0.3.2
2013-12-14 · diff ↗
0.3.0
2013-06-24
R
R 3.0.0 released · 2013-04-03

Package metadata

First published: 2013-06-24
Total releases: 7 / 13 yrs
License: GPL (>= 2) OSI
Bundled data: 3.5 KB / 3 files
Download size: 239 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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