R Observatory: Metrics for POSSA version 0.6.5

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

POSSA

0.6.5

Power Simulation for Sequential Analyses and Multiple Hypotheses

0packages depend

2.8Kdownloads / year

49.0%test coverage

13/13checks pass

Overview

About

Maintained by Gáspár LukácsFirst published 2022-07-185 releasesCRAN page ↗GitHub ↗

Calculates, via simulation, power and appropriate stopping alpha boundaries (and/or futility bounds) for sequential analyses (i.e., group sequential design) as well as for multiple hypotheses (multiple tests included in an analysis), given any specified global error rate. This enables the sequential use of practically any significance test, as long as the underlying data can be simulated in advance to a reasonable approximation. Lukács (2022) doi:10.21105/joss.04643.

Install

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

install.packages("POSSA", 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("gasparl/possa")

Development version from gasparl/possa. 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-possa

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-POSSA

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-POSSA

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

Health

CRAN checks

13OK

Slowest check: 2.4 min · r-oldrel-macos-x86_64

Code health

Yes

Tests · ratio 0.25

49.0%

Coverage · measured lines

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
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 341 wordsVignettesYes · dynamicpkgdown siteNoNEWSNoCode of conductNoContributing guideNo

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

Downloads

2.8K

CRAN downloads in the past year

Rank #20,335 · ~8/day · ~234/mo

Releases R versions

Daily download trend is not available in this view yet.

12330 days

54890 days

2.8K1 year

Compare downloads with other packages →

Also on101 r2u20 autocran

Repository

GitHub ↗ gasparl/possa

1Stars

1Forks

6Open issues

0Open PRs

5Releases

120Commits

2Contributors

multiple-testingrr-pkgsequential-analysessequential-designstatistical-analysis

120 commits · Last activity 2025-08-21

Stars over time

2022-05-14 · 12026-07-07 · 1

Repository practices

Upstream repositoryBeta

2 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/gasparl/possa on 2026-08-09.

Continuous integration (1)

GitHub Actions

CRAN release process (1)

CRAN-SUBMISSION

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

Dependencies

Declared dependencies

5 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.6.0

Imports (2)

data.tablemethods

LinkingTo (0)

none

Suggests (4)

testthat knitr rmarkdown faux

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (1)

Maintainer (1)

Gáspár Lukács

Author, Maintainer

Authors (1)

Gáspár Lukács

Author, Maintainer

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
0.6.5Latest
2025-08-21 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
0.6.4
2023-04-22 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.6.3
2023-03-14 · diff ↗
0.6.1
2022-08-29 · diff ↗
0.5.5
2022-07-18
R
R 4.2.0 released · 2022-04-22

Package metadata

First published: 2022-07-18
Total releases: 5 / 4 yrs
License: BSD_2_clause + file LICENSE OSI
Minimum R: ≥ 3.6.0
Download size: 158 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("POSSA")

Format

Lukács, G. (2025). POSSA: Power Simulation for Sequential Analyses and Multiple Hypotheses (Version 0.6.5) [Computer software]. https://doi.org/10.32614/CRAN.package.POSSA

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 POSSA version 0.6.5 [Data set]. HJJB, LLC. Data release v2026-08-15. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-15, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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