Package: Bchron 4.7.8

Bchron: Age-Depth Radiocarbon Modelling

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as a means to determine the activity of a site (and as an alternative to the 'Oxcal' function SUM(); currently unpublished), and reverse calibration of dates from calibrated into 14C years (also unpublished).

Authors:Andrew Parnell [cre, aut], Nathan McJames [ctb], Bruna Wundervald [ctb], Keefe Murphy [ctb], Mateus Maia [ctb], Amin Shoari Nejad [ctb], Yong Chen Goh [ctb]

Bchron_4.7.8.tar.gz
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Bchron_4.7.8.tgz(r-4.6-x86_64)Bchron_4.7.8.tgz(r-4.6-arm64)Bchron_4.7.8.tgz(r-4.5-x86_64)Bchron_4.7.8.tgz(r-4.5-arm64)
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Bchron_4.7.8.tgz(r-4.6-emscripten)
manual.pdf |manual.html✨
DESCRIPTION |NEWS
card.svg |card.png
Bchron/json (API)

# Install 'Bchron' in R:

install.packages('Bchron', repos = c('https://andrewcparnell.r-universe.dev', 'https://cloud.r-project.org'))

Bug tracker:https://github.com/andrewcparnell/bchron/issues

Pkgdown/docs site:https://andrewcparnell.github.io

Datasets:

Glendalough - Glendalough data
intcal13 - Northern hemisphere 2013 calibration curve
intcal20 - Northern hemisphere 2020 calibration curve
marine13 - Marine 2013 calibration curve
marine20 - Marine 2020 calibration curve
normal - Data for dummy calibration of normally distributed ages
shcal13 - Southern hemisphere 2013 calibration curve
shcal20 - Southern hemisphere 2020 calibration curve
Sluggan - Sluggan Moss data
TestChronData - Example chronology file for use with the BchronRSL function.
TestRSLData - Relative sea level data

On CRAN:

8.05 score 37 stars 203 scripts 682 downloads 12 mentions 14 exports 41 dependencies

Last updated from:bdc9a38de8. Checks:13 OK. Indexed: yes.

Target	Result	Time
linux-devel-arm64	OK	272
linux-devel-x86_64	OK	292
source / vignettes	OK	350
linux-release-arm64	OK	254
linux-release-x86_64	OK	268
macos-release-arm64	OK	333
macos-release-x86_64	OK	697
macos-oldrel-arm64	OK	281
macos-oldrel-x86_64	OK	679
windows-devel	OK	265
windows-release	OK	262
windows-oldrel	OK	253
wasm-release	OK	119

Exports:%>%BchronCalibrate BchronCheck BchronDensity BchronDensityFast Bchronology BchronRSL choosePositions coreInfluence createCalCurve dateInfluence hdr sampleAges unCalibrate

Dependencies:backports base64enc checkmate cli coda cpp11 dplyr farver generics ggforce ggplot2 ggridges glue gtable isoband jsonlite labeling lattice lifecycle magrittr MASS mclust pillar pkgconfig polyclip purrr R6 RColorBrewer rlang S7 scales stringi stringr systemfonts tibble tidyselect tweenr utf8 vctrs viridisLite withr

Using Bayesian radiocarbon chronology package Bchron

Rendered fromBchron.Rmdusingknitr::rmarkdown

Last update: 2025-12-11
Started: 2015-08-17

Help page	Topics
Bchron: Radiocarbon dating, age-depth modelling, relative sea level rate estimation, and non-parametric phase modelling	Bchron-package Bchron
Fast radiocarbon calibration	BchronCalibrate
Check data for input into BchronCalibrate or Bchronology	BchronCheck
Non-parametric phase model	BchronDensity
Non-parametric phase model (faster version)	BchronDensityFast
Runs the Compound Poisson-Gamma chronology model of Haslett and Parnell (2008)	Bchronology
Relative sea level rate (RSL) estimation	BchronRSL
Compute positions to date next which result in maximal decrease of chronological uncertainty	choosePositions
Find the influence of dates in a pair of Bchronology runs across the core	coreInfluence
Create a new calibration curve	createCalCurve
Find the influence of the dates in a Bchronology run	dateInfluence
Glendalough data	Glendalough
Calculate highest density regions for Bchron calibrated ages	hdr
Northern hemisphere 2013 calibration curve	intcal13
Northern hemisphere 2020 calibration curve	intcal20
Marine 2013 calibration curve	marine13
Marine 2020 calibration curve	marine20
Data for dummy calibration of normally distributed ages	normal
Plot calibrated dates from a BchronCalibrate run	plot.BchronCalibratedDates
Plot output from 'BchronDensity'	plot.BchronDensityRun
Plot run from 'BchronDensityFast'	plot.BchronDensityRunFast
Plot output from Bchronology	plot.BchronologyRun
Plot output from BchronRSL	plot.BchronRSLRun
Predict ages of other positions for a BchronologyRun object	predict.BchronologyRun
Get sample ages from a set of Bchron calibrated dates	sampleAges
Southern hemisphere 2013 calibration curve	shcal13
Southern hemisphere 2020 calibration curve	shcal20
Sluggan Moss data	Sluggan
Summarise a BchronCalibrate object	summary.BchronCalibratedDates
Summarise a Bchron density object	summary.BchronDensityRun
Summarise a Bchronology object	summary.BchronologyRun
Summarise a BchronRSL run	summary.BchronRSLRun
Example chronology file for use with the BchronRSL function.	TestChronData
Relative sea level data	TestRSLData
Uncalibrate a Radiocarbon date	unCalibrate

Package: Bchron 4.7.8

Bchron: Age-Depth Radiocarbon Modelling

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Help Manual

Usage by other packages (reverse dependencies)