R Observatory: Metrics for matchednull version 0.2.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

matchednull

0.2.1Package record

Matched-Null Tests for Cluster-Count Claims

0packages depend

777downloads / year

98.4%test coverage

13/13flavors OK

Overview

About

Maintained by Miura MengCRAN page ↗GitHub ↗Website ↗Issues ↗

Builds matched nulls for cluster-count claims: synthetic twins of a dataset that preserve every marginal distribution and the full correlation matrix while containing no cluster structure by construction. A reported number of clusters or "types" can then be tested against what the data's own margins and covariance already produce, using any clustering pipeline. A t-copula option adds tail dependence to the null, so that an apparent excess of clusters can be checked against a heavier-tailed alternative before it is read as evidence of types. Implements the matched-null procedure of Meng (2026) "Types Without Taxa" doi:10.17605/OSF.IO/2EKCG.

Changes in 0.2.1

matched_null_test() gains parallel. With parallel = TRUE the twin loop runs through 'future.apply', so the backend is whatever future::plan() the caller has set. Seeded results are reproducible and independent of the number of workers. The default parallel = FALSE path is unchanged, so existing seeded analyses reproduce exactly.
The maintainer address now uses a permanent personal inbox.

From NEWS.md in the release

Install

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

install.packages("matchednull", 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("haomeng797-ship-it/matchednull")

Development version from haomeng797-ship-it/matchednull. 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-matchednull

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-matchednull

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-matchednull

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: 1.7 min · r-release-macos-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK7 OK2026-07-22

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.2.1

READMEYes · 374 wordsVignettesYes · 1 · dynamicNEWSYes · 100% structured · mentions 0.2.1Citation fileYes · cites a publicationWebsiteYes · pkgdown

The repository also keeps web-only articles.

Help pages: 2
Examples that run: 50%1 run in a plain check · 1 only when donttest examples are enabled (R CMD check --as-cran)
Exported functions with examples: 100%
Documented parameters: 88%
Return-value docs: 100%
Help pages citing references: 50%

Vignettes (1)

Testing a cluster count with matched nulls HTML

How these are measured

Downloads

777

CRAN downloads in the past year

Rank #15,535 · ~2/day · ~65/mo

Releases R versions

Daily download trend is not available in this view yet.

25030 days

77790 days

7771 year

Compare downloads with other packages →

Also on26 r2u6 autocran

How downloads are counted

Repository

haomeng797-ship-it/matchednull ↗Account: haomeng797-ship-it

2Stars

0Forks

0Open issues

1Open PRs

1Releases

47Commits

1Commit identities

mixture-modelsnull-modelpsychometricsrr-packagereproducible-researchrstatstaxometrics

47 commits · Last activity 2026-08-19 · 0% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 100%
Median days to close, 50 most recently updated closed issues: not measured
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2026-07-22 · 02026-07-30 · 2

How these are measured

PracticesBeta

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

Checks run against github.com/haomeng797-ship-it/matchednull on 2026-10-11.

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 (2)

pkgdown

GitHub Pages site last deployed 2026-08-19

pkgdown site last built 2026-08-09, before release 0.2.1 (2026-08-21)

CRAN release process (1)

cran-comments.md

Research and citation (1)

CITATION.cff

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

Dependencies

Declared dependencies

6 external dependencies (excludes base and recommended)

Installing matchednull adds no packages beyond those that come with R.

Depends (0)

none

Imports (1)

stats

LinkingTo (0)

none

Suggests (6)

mclust testthat knitr rmarkdown future.apply future

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

People & History

People (1)

Miura Meng

Author, Maintainer since 0.1.0 (2026)

Releases (2)

Pick two releases to compare their code metrics.

0.2.1Latest
record
2026-08-21 · current release · diff ↗
0.1.0
record
2026-07-21
R
R 4.6.0 released · 2026-04-24

Package metadata

First published: 2026-07-21
Total releases: 2 / 1 yrs
License: MIT + file LICENSE OSI
Download size: 299 KB

Appears in task views

Cluster Analysis & Finite Mixture Models

Cite

Cite this package

Run in R for the authors' entry:

citation("matchednull")

The package provides a citation file, so citation() returns the authors' own entry.

The repository also keeps a CITATION.cff.

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 matchednull version 0.2.1 [Data set]. HJJB, LLC. Data release v2026-10-18. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-18, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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