R Observatory: Metrics for liver version 1.29

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

liver

1.29

Toolkit and Datasets for Data Science

2packages depend

9.8Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Reza MohammadiFirst published 2020-08-1830 releasesCRAN page ↗

Provides a collection of helper functions and illustrative datasets to support learning and teaching of data science with R. The package is designed as a companion to the book https://book-data-science-r.netlify.app, making key data science techniques accessible to individuals with minimal coding experience. Functions include tools for data partitioning, performance evaluation, and data transformations (e.g., z-score and min-max scaling). The included datasets are curated to highlight practical applications in data exploration, modeling, and multivariate analysis. An early inspiration for the package came from an ancient Persian idiom about "eating the liver", symbolizing deep and immersive engagement with knowledge.

Install

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

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

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

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-liver

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-liver

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-liver

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

Health

CRAN checks

13OK

Slowest check: 2.0 min · r-oldrel-windows-x86_64

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

2

Dependencies · direct

Check history

OK2026-08-05
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-05-08
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
WARNING2026-05-07
12 OK · 0 NOTE · 1 WARNING · 0 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 196 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 78%
References docs: 62%

Downloads

9.8K

CRAN downloads in the past year

Rank #5,055 · ~27/day · ~819/mo

Releases R versions

Daily download trend is not available in this view yet.

43130 days

1.5K90 days

9.8K1 year

Compare downloads with other packages →

Also on290 r2u21 autocran410 conda_forge

Dependencies

Declared dependencies

8 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.5.0

Imports (2)

classggplot2

LinkingTo (0)

none

Suggests (7)

pROC skimr knitr rmarkdown data.table mltools forcats

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

2direct

0indirect

SDI henna

Code & Tests

Datasets

People & History

People (3)

Maintainer (1)

Reza Mohammadi

Author, Maintainer

Authors (3)

Reza Mohammadi

Author, Maintainer

Kevin Burke

Author

Jeroen van Raak

Author · added in 1.28

Package Timeline

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

1.29Latest
2026-05-04 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
1.28
2026-04-07 · diff ↗
1.27
2026-02-18 · diff ↗
1.26
2025-11-26 · diff ↗
1.25
2025-11-14 · diff ↗
1.24
2025-10-24 · diff ↗
1.23
2025-10-05 · diff ↗
1.22
2025-09-27 · diff ↗
1.21
2025-09-08 · diff ↗
1.20
2025-08-21 · diff ↗
R
R 4.5.0 released · 2025-04-11
1.19
2025-03-18 · diff ↗
1.18
2024-11-22 · diff ↗
1.17
2024-10-28 · diff ↗
1.16
2024-09-05 · diff ↗

Show 21 earlier events

R
R 4.4.0 released · 2024-04-24
1.15
2023-11-01 · diff ↗
R
R 4.3.0 released · 2023-04-21
1.14
2023-04-11 · diff ↗
1.13
2022-08-07 · diff ↗
1.12
2022-05-06 · diff ↗
R
R 4.2.0 released · 2022-04-22
1.11
2022-03-03 · diff ↗
1.10
2021-10-27 · diff ↗
1.9
2021-09-12 · diff ↗
1.8
2021-08-16 · diff ↗
R
R 4.1.0 released · 2021-05-18
1.7
2021-04-20 · diff ↗
1.6
2021-04-06 · diff ↗
1.5
2021-03-09 · diff ↗
1.4
2021-02-11 · diff ↗
1.3
2020-11-13 · diff ↗
1.2
2020-09-25 · diff ↗
1.1
2020-09-10 · diff ↗
1.0
2020-08-18
R
R 4.0.0 released · 2020-04-24

Package metadata

First published: 2020-08-18
Total releases: 30 / 6 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.5.0
Bundled data: 3.6 MB / 27 files
Download size: 4.8 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Teaching Statistics

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("liver")

Format

Mohammadi, R., Burke, K., & van Raak, J. (2026). liver: Toolkit and Datasets for Data Science (Version 1.29) [Computer software]. https://doi.org/10.32614/CRAN.package.liver

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 liver version 1.29 [Data set]. HJJB, LLC. Data release v2026-08-22. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-22, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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