R Observatory: Metrics for Bchron version 4.7.8

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

Bchron

4.7.8Package record

Age-Depth Radiocarbon Modelling

0packages dependsuggested by 2

11.9Kdownloads / year

93.7%test coverage

8/13flavors OK

Overview

About

Maintained by Andrew ParnellCRAN page ↗GitHub ↗Website ↗Issues ↗

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mixtures as a means to determine the activity of a site (and as an alternative to the 'Oxcal' function SUM(); currently unpublished), and reverse calibration of dates from calibrated into 14C years (also unpublished).

Changes in 4.7.8

Changed the arguments to summary.Bchronologyrun to allow for more flexibility in the accumulation rate estimation
added a test (test_order.R) for when the order of the data set is changed
Fixed a bug in the way Bchronology was returning the radiocarbon dates when they weren't given in depth order

From NEWS.md in the release

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. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

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). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

5NOTE8OK

Check messages

NOTER code for possible problemsr-devel-linux-x86_64-debian-clang, r-devel-linux-x86_64-debian-gcc, r-devel-linux-x86_64-fedora-clang, r-devel-linux-x86_64-fedora-gcc, r-devel-windows-x86_64

Found calls to structure() using deprecated special names:
  Bchron/tests/testthat/test_all_chrons.R (.Label: 2)
'.Label' should be changed to 'levels'.

CRAN check page ↗

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

Status changes

NOTE8 OK, 5 NOTENow
NOTE10 OK, 3 NOTE2026-07-16
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 4.7.8

README· In the repository, left out of the releaseVignettesYes · 1 · dynamicNEWSYes · 100% structured · mentions 4.7.8Citation fileYes · cites a publicationWebsiteYes · pkgdown

Help pages: 36 (1 internal)includes a package overview page
Examples that run: 31%4 run in a plain check · 8 only when donttest examples are enabled (R CMD check --as-cran) · 1 never run
Exported functions with examples: 93%
Documented parameters: 90%
Return-value docs: 100%
Help pages citing references: 6%

Vignettes (1)

Bchron

How these are measured

Downloads

11.9K

CRAN downloads in the past year

Rank #3,650 · ~33/day · ~994/mo

Releases R versions

Daily download trend is not available in this view yet.

1K30 days

2.7K90 days

11.9K1 year

Compare downloads with other packages →

Also on509 r2u35 autocran161 c2d4u

How downloads are counted

Repository

andrewcparnell/bchron ↗Account: andrewcparnell

38Stars

11Forks

1Open issues

0Open PRs

5Releases

387Commits

5Commit identities

387 commits · Last activity 2025-12-12 · 0% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 20%
Median days to close, 50 most recently updated closed issues: 116
Median days to close, 50 most recently updated closed PRs: 177

Stars over time

2025-03-21 · 372026-08-27 · 38

How these are measured

PracticesBeta

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

Checks run against github.com/andrewcparnell/bchron on 2026-10-18.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

Docs source (3)

pkgdown

GitHub Pages site last deployed 2025-12-12 · The repository has a site deploy workflow

Coverage (1)

Coverage reporting (Codecov)

CRAN release process (2)

cran-comments.mdrevdep/

Show all practicesHide 1 practice

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v3 (2026-09-26)

Dependencies

Declared dependencies

15 external dependencies (excludes base and recommended)

Installing Bchron adds 39 packages (23 with compiled code, 36 MB of source tarballs). Heaviest: stringi 11 MB, ggplot2 6.0 MB, mclust 2.7 MB.

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

0direct

0indirect

Suggested by 2

Suggests, most downloaded first

neotoma2 RRgeo

How these are counted

Code & Tests

Datasets

People & History

People (7)

Andrew Parnell

Maintainer since 1.2 (2007), Author

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

Releases (33)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
4.7.8Latest
record
2025-12-12 · current release · diff ↗
unarchivedReturned to CRAN
2025-06-13
4.7.7
record
2025-06-13 · diff ↗
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
record
2021-06-10 · diff ↗
R
R 4.1.0 released · 2021-05-18
4.7.5
record
2021-05-12 · diff ↗ ·
added 1 export
BchronCheck
4.7.4
record
2021-01-28 · diff ↗
4.7.3
record
2020-11-21 · diff ↗
4.7.2
record
2020-09-01 · diff ↗
R
R 4.0.0 released · 2020-04-24

Show 43 earlier eventsHide 43 earlier events

4.7.1
record
2020-04-13 · diff ↗
4.7.0
record
2020-03-13 · diff ↗
4.6.1
record
2020-03-06 · diff ↗
4.5.0
record
2020-01-15 · diff ↗ ·
removed 1 export
CreateCalCurve

added 2 exports
%>%, createCalCurve
R
R 3.6.0 released · 2019-04-26
4.3.0
record
2018-06-15 · diff ↗ ·
added 2 exports
choosePositions, coreInfluence
R
R 3.5.0 released · 2018-04-23
4.2.7
record
2018-02-27 · diff ↗ ·
removed 1 export
SampleAges

added 3 exports
dateInfluence, sampleAges, unCalibrate
R
R 3.4.0 released · 2017-04-21
4.2.6
record
2016-12-27 · diff ↗ ·
removed 1 export
pattern:^[[:alpha:]]+

added 8 exports
BchronCalibrate, BchronDensity, BchronDensityFast, BchronRSL, Bchronology, CreateCalCurve, SampleAges, hdr
4.2.5
record
2016-08-02 · diff ↗
4.2.4
record
2016-07-26 · diff ↗
4.2.2
record
2016-06-21 · diff ↗
4.2.1
record
2016-06-05 · diff ↗
R
R 3.3.0 released · 2016-05-03
4.1.2
record
2015-08-17 · diff ↗
R
R 3.2.0 released · 2015-04-16
4.1.1
record
2014-04-22 · diff ↗
4.1
record
2014-04-11 · diff ↗
R
R 3.1.0 released · 2014-04-10
4.0
record
2014-04-01 · diff ↗ ·
removed 15 exports
Bchroncalibrate, Bchroncheck, Bchronconvergecheck, Bchroncreatecalcurve, Bchronload, BchronMCMC, Bchronmenu, Bchronplot, Bchronplotevent, Bchronpredict, Bchronpredictevent, Bchronproxyplot, BchronRSL, BchronRSLplot, Quickcal

added 1 export
pattern:^[[:alpha:]]+
3.2
record
2013-04-23 · diff ↗ ·
added 3 exports
BchronRSL, BchronRSLplot, Quickcal
R
R 3.0.0 released · 2013-04-03
3.1.5
record
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
record
2010-11-03 · diff ↗
3.1.3
record
2010-10-28 · diff ↗
3.1.2
record
2010-10-27 · diff ↗
R
R 2.12.0 released · 2010-10-15
3.1.1
record
2010-09-10 · diff ↗ ·
removed 1 export
newgraphwindow
R
R 2.11.0 released · 2010-04-22
3.1
record
2010-01-14 · diff ↗
3.0
record
2009-12-09 · diff ↗ ·
removed 8 exports
Bchronloaddata, Bchronplotter, Bchronplotterdatesonly, BchronreadEPD, hdr2.den, Bchronquickload, Bchronchangecalcurve, Bchronplotdens

added 4 exports
Bchroncreatecalcurve, Bchronload, Bchronplot, Bchronproxyplot
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
record
2008-05-13 · diff ↗ ·
added 2 exports
Bchronplotterdatesonly, BchronreadEPD
2.0
record
2008-04-27 · diff ↗ ·
removed 4 exports
calibrate, PlotBchron, PlotDens, predictBchron

added 12 exports
Bchroncalibrate, Bchronloaddata, Bchronpredict, Bchronpredictevent, Bchronplotter, Bchronplotevent, newgraphwindow, Bchronquickload, Bchronchangecalcurve, Bchroncheck, Bchronplotdens, Bchronconvergecheck
R
R 2.7.0 released · 2008-04-22
1.2
record
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

Appears in task views

Paleontology

Cite

Cite this package

Run in R for the authors' entry:

citation("Bchron")

The package provides a citation file, so citation() returns the authors' own entry.

It points to 10.1111/j.1467-9876.2008.00623.x.

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 v2026-10-21. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-21, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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