R Observatory: Metrics for Bchron version 4.7.8

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

Bchron

4.7.8

Age-Depth Radiocarbon Modelling

2packages depend

13.8Kdownloads / year

93.7%test coverage

8/13checks pass

Overview

About

Maintained by Andrew ParnellFirst published 2008-02-2133 releasesCRAN page ↗GitHub ↗

Enables quick calibration of radiocarbon dates under various calibration curves (including user generated ones); age-depth modelling as per the algorithm of Haslett and Parnell (2008) DOI:10.1111/j.1467-9876.2008.00623.x; Relative sea level rate estimation incorporating time uncertainty in polynomial regression models (Parnell and Gehrels 2015) DOI:10.1002/9781118452547.ch32; non-parametric phase modelling via Gaussian mixtures as a means to determine the activity of a site (and as an alternative to the 'Oxcal' function SUM(); currently unpublished), and reverse calibration of dates from calibrated into 14C years (also unpublished).

Install

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

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

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

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("andrewcparnell/Bchron")

Development version from andrewcparnell/Bchron. Installs pak first if it is not already available.

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-bchron

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-Bchron

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-Bchron

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

Health

CRAN checks

5NOTE8OK

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

Slowest check: 14.2 min · r-release-macos-x86_64

Code health

Yes

Tests · ratio 0.42

93.7%

Coverage · measured lines

93%

Documentation · exports

14

Dependencies · direct

Check history

NOTE2026-07-16
10 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 31%
Documented parameters: 90%
Return-value docs: 100%
References docs: 6%

Downloads

13.8K

CRAN downloads in the past year

Rank #4,012 · ~38/day · ~1.1K/mo

Releases R versions

Daily download trend is not available in this view yet.

73830 days

2.1K90 days

13.8K1 year

Compare downloads with other packages →

Also on499 r2u47 autocran71 c2d4u

Repository

GitHub ↗ andrewcparnell/bchron

37Stars

11Forks

1Open issues

0Open PRs

5Releases

387Commits

5Contributors

387 commits · Last activity 2025-12-12

Stars over time

2025-03-21 · 372026-07-07 · 37

Repository practices

Upstream repositoryBeta

5 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/andrewcparnell/bchron on 2026-08-16.

Continuous integration (1)

GitHub Actions

CRAN release process (2)

cran-comments.mdrevdep/

Lint, format, editor (1)

RStudio project

Coverage (1)

Codecov

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

15 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.1.0

Imports (14)

utilsMASScoda mclust ggplot2 ggridges magrittr purrr ggforce dplyr scales stringr checkmatemethods

LinkingTo (0)

none

Suggests (4)

knitr testthat rmarkdown covr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

2direct

0indirect

RRgeo neotoma2

Code & Tests

Datasets

People & History

People (7)

Maintainer (1)

Andrew Parnell

Maintainer, Author

Authors (1)

Andrew Parnell

Maintainer, Author

Contributors (6)

Yong Chen Goh

Contributor · added in 4.7.5

Mateus Maia

Contributor · added in 4.7.5

Nathan McJames

Contributor · added in 4.7.5

Keefe Murphy

Contributor · added in 4.7.5

Amin Shoari Nejad

Contributor · added in 4.7.5

Bruna Wundervald

Contributor · added in 4.7.5

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
4.7.8Latest
2025-12-12 · current release · diff ↗
4.7.7
2025-06-13 · diff ↗
unarchivedReturned to CRAN
2025-06-13
R
R 4.5.0 released · 2025-04-11
archivedRemoved from CRAN
2025-04-01
email to the maintainer is undeliverable
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
4.7.6
2021-06-10 · diff ↗
R
R 4.1.0 released · 2021-05-18
4.7.5
2021-05-12 · diff ↗
4.7.4
2021-01-28 · diff ↗
4.7.3
2020-11-21 · diff ↗
4.7.2
2020-09-01 · diff ↗
R
R 4.0.0 released · 2020-04-24

Show 43 earlier events

4.7.1
2020-04-13 · diff ↗
4.7.0
2020-03-13 · diff ↗
4.6.1
2020-03-06 · diff ↗
4.5.0
2020-01-15 · diff ↗
R
R 3.6.0 released · 2019-04-26
4.3.0
2018-06-15 · diff ↗
R
R 3.5.0 released · 2018-04-23
4.2.7
2018-02-27 · diff ↗
R
R 3.4.0 released · 2017-04-21
4.2.6
2016-12-27 · diff ↗
4.2.5
2016-08-02 · diff ↗
4.2.4
2016-07-26 · diff ↗
4.2.2
2016-06-21 · diff ↗
4.2.1
2016-06-05 · diff ↗
R
R 3.3.0 released · 2016-05-03
4.1.2
2015-08-17 · diff ↗
R
R 3.2.0 released · 2015-04-16
4.1.1
2014-04-22 · diff ↗
4.1
2014-04-11 · diff ↗
R
R 3.1.0 released · 2014-04-10
4.0
2014-04-01 · diff ↗
3.2
2013-04-23 · diff ↗
R
R 3.0.0 released · 2013-04-03
3.1.5
2012-06-11 · diff ↗
R
R 2.15.0 released · 2012-03-30
R
R 2.14.0 released · 2011-10-31
R
R 2.13.0 released · 2011-04-13
3.1.4
2010-11-03 · diff ↗
3.1.3
2010-10-28 · diff ↗
3.1.2
2010-10-27 · diff ↗
R
R 2.12.0 released · 2010-10-15
3.1.1
2010-09-10 · diff ↗
R
R 2.11.0 released · 2010-04-22
3.1
2010-01-14 · diff ↗
3.0
2009-12-09 · diff ↗
R
R 2.10.0 released · 2009-10-26
R
R 2.9.0 released · 2009-04-17
R
R 2.8.0 released · 2008-10-20
2.1
2008-05-13 · diff ↗
2.0
2008-04-27 · diff ↗
R
R 2.7.0 released · 2008-04-22
1.2
2008-02-21
R
R 2.6.0 released · 2007-10-03

Package metadata

First published: 2008-02-21
Total releases: 33 / 18 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 4.1.0
Bundled data: 248 KB / 11 files
Download size: 1.0 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Paleontology

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("Bchron")

Format

Parnell, A., Goh, Y. C., Maia, M., McJames, N., Murphy, K., Shoari Nejad, A., & Wundervald, B. (2025). Bchron: Age-Depth Radiocarbon Modelling (Version 4.7.8) [Computer software]. https://doi.org/10.32614/CRAN.package.Bchron

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for Bchron version 4.7.8 [Data set]. HJJB, LLC. Data release v2026-08-16. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-16, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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