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mixtures as a means to determine the activity of a site (and as an alternative to the 'Oxcal' function SUM(); currently unpublished), and reverse calibration of dates from calibrated into 14C years (also unpublished).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)
Bchron_4.7.8.tar.gz(r-4.7-arm64)Bchron_4.7.8.tar.gz(r-4.7-x86_64)Bchron_4.7.8.tar.gz(r-4.6-arm64)Bchron_4.7.8.tar.gz(r-4.6-x86_64)
Bchron_4.7.8.tgz(r-4.6-emscripten)
manual.pdf |manual.html✨
card.svg |card.png
Bchron/json (API)
NEWS

# 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:

Conda:

8.15 score 37 stars 191 scripts 697 downloads 12 mentions 14 exports 41 dependencies

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

TargetResultTimeFilesSyslog
linux-devel-arm64OK253
linux-devel-x86_64OK271
source / vignettesOK283
linux-release-arm64OK313
linux-release-x86_64OK265
macos-release-arm64OK287
macos-release-x86_64OK799
macos-oldrel-arm64OK424
macos-oldrel-x86_64OK497
windows-develOK266
windows-releaseOK257
windows-oldrelOK337
wasm-releaseOK106

Exports:%>%BchronCalibrateBchronCheckBchronDensityBchronDensityFastBchronologyBchronRSLchoosePositionscoreInfluencecreateCalCurvedateInfluencehdrsampleAgesunCalibrate

Dependencies:backportsbase64enccheckmateclicodacpp11dplyrfarvergenericsggforceggplot2ggridgesgluegtableisobandjsonlitelabelinglatticelifecyclemagrittrMASSmclustpillarpkgconfigpolyclippurrrR6RColorBrewerrlangS7scalesstringistringrsystemfontstibbletidyselecttweenrutf8vctrsviridisLitewithr

Using Bayesian radiocarbon chronology package Bchron

Andrew Parnell

Rendered fromBchron.Rmdusingknitr::rmarkdownon May 11 2026.

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

Readme and manuals

Help Manual

Help pageTopics
Bchron: Radiocarbon dating, age-depth modelling, relative sea level rate estimation, and non-parametric phase modellingBchron-package Bchron
Fast radiocarbon calibrationBchronCalibrate
Check data for input into BchronCalibrate or BchronologyBchronCheck
Non-parametric phase modelBchronDensity
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) estimationBchronRSL
Compute positions to date next which result in maximal decrease of chronological uncertaintychoosePositions
Find the influence of dates in a pair of Bchronology runs across the corecoreInfluence
Create a new calibration curvecreateCalCurve
Find the influence of the dates in a Bchronology rundateInfluence
Glendalough dataGlendalough
Calculate highest density regions for Bchron calibrated ageshdr
Northern hemisphere 2013 calibration curveintcal13
Northern hemisphere 2020 calibration curveintcal20
Marine 2013 calibration curvemarine13
Marine 2020 calibration curvemarine20
Data for dummy calibration of normally distributed agesnormal
Plot calibrated dates from a BchronCalibrate runplot.BchronCalibratedDates
Plot output from 'BchronDensity'plot.BchronDensityRun
Plot run from 'BchronDensityFast'plot.BchronDensityRunFast
Plot output from Bchronologyplot.BchronologyRun
Plot output from BchronRSLplot.BchronRSLRun
Predict ages of other positions for a BchronologyRun objectpredict.BchronologyRun
Get sample ages from a set of Bchron calibrated datessampleAges
Southern hemisphere 2013 calibration curveshcal13
Southern hemisphere 2020 calibration curveshcal20
Sluggan Moss dataSluggan
Summarise a BchronCalibrate objectsummary.BchronCalibratedDates
Summarise a Bchron density objectsummary.BchronDensityRun
Summarise a Bchronology objectsummary.BchronologyRun
Summarise a BchronRSL runsummary.BchronRSLRun
Example chronology file for use with the BchronRSL function.TestChronData
Relative sea level dataTestRSLData
Uncalibrate a Radiocarbon dateunCalibrate