rice

2.2.1

Radiocarbon Equations

4packages depend

13.4Kdownloads / year

32.7%test coverage

12/13checks pass

Overview

About

Maintained by Maarten BlaauwFirst published 2024-09-0216 releasesCRAN page ↗GitHub ↗

Provides functions for the calibration of radiocarbon dates, as well as options to calculate different radiocarbon-related timescales (cal BP, cal BC/AD, C14 age, F14C, pMC, D14C) and estimating the effects of contamination or local reservoir offsets (Reimer and Reimer 2001 doi:10.1017/S0033822200038339). Supporting publication: Blaauw, M., Reimer, P.J., 2026. An open-source toolkit for radiocarbon dating and calibration. Radiocarbon doi:10.1017/RDC.2026.10221. The methods follow long-established recommendations such as Stuiver and Polach (1977) doi:10.1017/S0033822200003672 and Reimer et al. (2004) doi:10.1017/S0033822200033154. This package uses the calibration curves from the data package 'rintcal'.

Install

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

install.packages("rice", 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("Maarten14C/rice")

Development version from Maarten14C/rice. 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-rice

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-rice

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-rice

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

Health

CRAN checks

1NOTE12OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-gcc

Slowest check: 4.8 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.06

32.7%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-04-11
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-10
13 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 95 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 99%
Documented parameters: 100%
Return-value docs: 94%
References docs: 0%

Downloads

13.4K

CRAN downloads in the past year

Rank #3,694 · ~37/day · ~1.1K/mo

Releases R versions

Daily download trend is not available in this view yet.

71630 days

2.8K90 days

13.4K1 year

Compare downloads with other packages →

Also on201 r2u

Repository

GitHub ↗ maarten14c/rice

3Stars

0Forks

0Open issues

0Open PRs

1Releases

195Commits

1Contributors

195 commits · Last activity 2026-07-30 · +50% stars, 30d

Stars over time

2025-07-15 · 22026-07-15 · 3

Repository practices

Upstream repositoryBeta

4 development-tooling and community-health practices detected across 3 families in the upstream repository

Checks run against github.com/maarten14c/rice on 2026-07-31.

Continuous integration (1)

GitHub Actions

Reproducibility and dev environment (1)

data-raw/

CRAN release process (2)

cran-comments.mdCRAN-SUBMISSION

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

Dependencies

Declared dependencies

18 external dependencies (excludes base and recommended)

Depends (2)

R >= 3.5.0rintcal

Imports (3)

rlang ggplot2 maps

LinkingTo (0)

none

Suggests (14)

knitr rmarkdown utf8 remotes sf flextable rnaturalearthdata rnaturalearth audio tuneR leaflet htmltools CopernicusMarine testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

4direct

0indirect

clam coffee rbacon rplum

Code & Tests

Datasets

People & History

People (3)

Maintainer (1)

Maarten Blaauw

Author, Maintainer

Authors (1)

Maarten Blaauw

Author, Maintainer

Contributors (2)

Vegard Martinsen

Contributor · added in 1.6.0

Paula Reimer

Contributor · added in 1.6.0

Package Timeline

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

2.2.1Latest
2026-07-09 · current release · diff ↗
2.2.0
2026-06-15 · diff ↗
R
R 4.6.0 released · 2026-04-24
2.1.0
2026-04-09 · diff ↗
2.0.1
2026-03-19 · diff ↗
1.6.2
2026-01-22 · diff ↗
1.6.0
2026-01-08 · diff ↗
1.5.0
2025-12-15 · diff ↗
1.4.0
2025-09-06 · diff ↗
1.3.0
2025-07-25 · diff ↗
1.2.0
2025-06-13 · diff ↗
R
R 4.5.0 released · 2025-04-11
1.1.1
2025-04-09 · diff ↗
1.0.0
2025-01-07 · diff ↗
0.4.0
2024-10-30 · diff ↗
0.3.0
2024-10-21 · diff ↗

Show 3 earlier events

0.2.0
2024-09-24 · diff ↗
0.1.1
2024-09-02
R
R 4.4.0 released · 2024-04-24

Package metadata

First published: 2024-09-02
Total releases: 16 / 2 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.5.0
Bundled data: 77 KB / 2 files
Download size: 1.4 MB
Installed size: not tracked yet
With dependencies: not tracked yet

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