Spower

0.6.4

Power Analyses using Monte Carlo Simulations

0packages depend

3.9Kdownloads / year

0.0%test coverage

13/13checks pass

Overview

About

Maintained by Phil ChalmersFirst published 2025-03-2510 releasesCRAN page ↗GitHub ↗

Provides a general purpose simulation-based power analysis API for routine and customized simulation experimental designs. The package focuses exclusively on Monte Carlo simulation experiment variants of (expected) prospective power analyses, criterion analyses, compromise analyses, sensitivity analyses, and a priori/post-hoc analyses. The default simulation experiment functions defined within the package provide stochastic variants of the power analysis subroutines in G*Power 3.1 (Faul, Erdfelder, Buchner, and Lang, 2009) doi:10.3758/brm.41.4.1149, along with various other parametric and non-parametric power analysis applications (e.g., mediation analyses) and support for Bayesian power analysis by way of Bayes factors or posterior probability evaluations. Additional functions for building empirical power curves, reanalyzing simulation information, and for increasing the precision of the resulting power estimates are also included, each of which utilize similar API structures. For further details see the associated publication in Chalmers (2025) doi:10.3758/s13428-025-02787-z.

Install

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

install.packages("Spower", 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("philchalmers/Spower")

Development version from philchalmers/Spower. 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-spower

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-Spower

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-Spower

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

Health

CRAN checks

13OK

Slowest check: 3.7 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.12

0.0%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-30
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-03-28
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 · 615 wordsVignettesYes · dynamicpkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 96%
Documented parameters: 99%
Return-value docs: 100%
References docs: 0%

Downloads

3.9K

CRAN downloads in the past year

Rank #8,783 · ~11/day · ~323/mo

Releases R versions

Daily download trend is not available in this view yet.

32630 days

1.3K90 days

3.9K1 year

Compare downloads with other packages →

Also on185 r2u19 autocran

Repository

GitHub ↗ philchalmers/spower

4Stars

2Forks

0Open issues

0Open PRs

7Releases

480Commits

1Contributors

480 commits · Last activity 2026-06-18 · 0% stars, 30d

Stars over time

2025-04-28 · 12026-07-07 · 4

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/philchalmers/spower on 2026-07-19.

Continuous integration (1)

GitHub Actions

Reproducibility and dev environment (1)

Makefile

Docs source (1)

README.Rmd

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

18 external dependencies (excludes base and recommended)

Depends (3)

R >= 4.1.0SimDesignstats

Imports (11)

cocor car polycor parallelly miraimethodscli ggplot2 plotly lavaan EnvStats

LinkingTo (0)

none

Suggests (7)

knitr rmarkdown bookdown extraDistr copula effectsize pwr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Code Composition

R 3,621 (43%)Rd 2,719 (32%)Vignettes 2,143 (25%)

Code characteristics

Object systems

S35

Cyclomatic complexity: 2.0 median / 46 max
Test cases: 7 / 0.12 per code line

Test coverage

Line coverage

Expression

0.0%

Tests / Examples

0.0% / 61% ex

Functions

60 40 exported

Complexity

4.7 avg / 46 max

Call network

60 nodes / 15 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

60 functions

Function	Cyclo	Coverage
Spower exp	46	0%
SpowerBatch exp	18	0%
SpowerCurve exp	30	0%
gen_2r exp	1	0%
gen_anova.test exp	2	0%
gen_chisq.test exp	2	0%

People & History

People (1)

Maintainer (1)

Phil Chalmers

Author, Maintainer

Authors (1)

Phil Chalmers

Author, Maintainer

Package Timeline

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

0.6.4Latest
2026-06-18 · current release · diff ↗
0.6.3
2026-05-22 · diff ↗
0.6.2
2026-05-06 · diff ↗
R
R 4.6.0 released · 2026-04-24
0.6
2026-02-13 · diff ↗
0.5.1
2025-11-27 · diff ↗
0.5.0
2025-10-16 · diff ↗
0.4.0
2025-09-05 · diff ↗
0.3.1
2025-07-17 · diff ↗
0.2.3
2025-05-21 · diff ↗
R
R 4.5.0 released · 2025-04-11
0.2.2
2025-03-25
R
R 4.4.0 released · 2024-04-24

Package metadata

First published: 2025-03-25
Total releases: 10 / 1 yrs
License: GPL (>= 3) OSI
Minimum R: ≥ 4.1.0
Download size: 2.7 MB
Installed size: not tracked yet
With dependencies: not tracked yet

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