R Observatory: Metrics for powertools version 1.0.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

powertools

1.0.0Package record

Power and Sample Size Tools

0packages depend

3.2Kdownloads / year

0.0%test coverage

13/13flavors OK

Overview

About

Maintained by Catherine M. CrespiCRAN page ↗GitHub ↗Issues ↗

Power and sample size calculations for a variety of study designs and outcomes. Methods include t tests, ANOVA (including tests for interactions, simple effects and contrasts), proportions, categorical data (chi-square tests and proportional odds), linear, logistic and Poisson regression, alternative and coprimary endpoints, power for confidence intervals, correlation coefficient tests, cluster randomized trials, individually randomized group treatment trials, multisite trials, treatment-by-covariate interaction effects and nonparametric tests of location. Utilities are provided for computing various effect sizes. Companion package to the book "Power and Sample Size in R", Crespi (2025, ISBN:9781138591622). Further resources available at https://powerandsamplesize.org/.

Install

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

install.packages("powertools", 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("powerandsamplesize/powertools")

Development version from powerandsamplesize/powertools. 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-powertools

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-powertools

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-powertools

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

13OK

CRAN check page ↗

Slowest check: 3.6 min · r-release-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-06-09
ERROR12 OK, 1 ERROR2026-06-08
WARNING12 OK, 1 WARNING2026-06-07

Show 1 earlier changeHide 1 earlier change

OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.0.0

README· In the repository, left out of the releaseVignettesNoNEWSNoCitation fileNoWebsitenot declared in DESCRIPTION

Help pages: 65 (4 internal)
Examples that run: 100%64 run in a plain check
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 0%

How these are measured

Downloads

3.2K

CRAN downloads in the past year

Rank #15,821 · ~9/day · ~265/mo

Releases R versions

Daily download trend is not available in this view yet.

28530 days

77390 days

3.2K1 year

Compare downloads with other packages →

Also on83 r2u6 autocran

How downloads are counted

Repository

powerandsamplesize/powertools ↗Organization: powerandsamplesize

1Stars

1Forks

0Open issues

0Open PRs

0Releases

55Commits

2Commit identities

55 commits · Last activity 2026-03-04 · 0% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): not measured
Median days to close, 50 most recently updated closed issues: 72
Median days to close, 50 most recently updated closed PRs: not measured

Stars over time

2025-12-29 · 12026-07-07 · 1

How these are measured

PracticesBeta

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

Checks run against github.com/powerandsamplesize/powertools 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 (1)

README.Rmd

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

5 external dependencies (excludes base and recommended)

Installing powertools adds 55 packages (29 with compiled code, 59 MB of source tarballs). Heaviest: stringi 11 MB, ggplot2 6.0 MB, data.table 5.7 MB.

Depends (1)

R >= 2.10

Imports (5)

mvtnorm PowerTOST Hmiscstatsknitr

LinkingTo (0)

none

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

Datasets

People & History

People (3)

Catherine M. Crespi

Author, Maintainer since 0.1.0 (2024)

Zichen Liu

Author

Kristen M. McGreevy

Contributor

Releases (4)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
1.0.0Latest
record
2025-11-15 · current release · diff ↗
0.1.3
record
2025-06-10 · diff ↗ ·
removed 1 export
es.fsq

added 3 exports
es.fsq.overall, es.fsq.partial, safe.uniroot
R
R 4.5.0 released · 2025-04-11
0.1.2
record
2024-11-21 · diff ↗
0.1.0
record
2024-11-14
R
R 4.4.0 released · 2024-04-24

Package metadata

First published: 2024-11-14
Total releases: 4 / 2 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 2.10
Bundled data: 5.9 KB / 1 file
Download size: 73 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("powertools")

Format

Crespi, C. M., Liu, Z., & McGreevy, K. M. (2025). powertools: Power and Sample Size Tools (Version 1.0.0) [Computer software]. https://doi.org/10.32614/CRAN.package.powertools

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

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 powertools version 1.0.0 [Data set]. HJJB, LLC. Data release v2026-10-20. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-20, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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