R Observatory: Metrics for magicrect version 1.0.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

magicrect

1.0.0Package record

Construct Magic Rectangles and Nearly Magic Rectangles

0packages depend

513downloads / year

96.3%test coverage

13/13flavors OK

Overview

About

Maintained by Arijit RayCRAN page ↗GitHub ↗Website ↗Issues ↗

Constructs a magic rectangle or a nearly magic rectangle of order p x q for every order for which one exists, together with existence classification and verification utilities. A magic rectangle arranges the integers 1 to p*q so that all row sums are equal and all column sums are equal; it exists exactly when p and q have the same parity, excluding 2 x 2 and degenerate single-row/column cases (Hagedorn, 1999, doi:10.1016/S0012-365X(99)00041-2). When p and q have opposite parity a nearly magic rectangle exists instead, with constant sums along one direction and sums differing by at most one along the other (Chai, Singh and Stufken, 2019, Journal of Combinatorial Designs 27(6), 368-376). Implements the constructions of De Los Reyes, Das, Midha and Vellaisamy (2009) for even by even orders, Chai, Das and Midha (2013) for odd by odd orders, and Chai, Singh and Stufken (2019) for the nearly magic (even by odd) case.

Changes in 1.0.0

Initial release.
magic_rectangle(p, q) constructs a magic rectangle (p, q of equal parity; De Los Reyes et al. 2009 for even orders, Chai-Das-Midha 2013 for odd orders) or a nearly magic rectangle (opposite parity; Chai-Singh-Stufken 2019) for every order for which one exists.
rectangle_type(p, q) classifies existence ("magic", "nearly magic", "none").
verify_rectangle(M) checks the defining properties from first principles.
Exhaustive test suite over all orders up to 40 x 40.

From NEWS.md in the release

Install

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

install.packages("magicrect", 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("Arijitray2/magic-rectangles")

Development version from Arijitray2/magic-rectangles. 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-magicrect

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-magicrect

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-magicrect

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: 43 s · r-devel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK6 OK2026-07-20

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.0.0

READMEYes · 448 wordsVignettesNoNEWSYes · 67% structured · mentions 1.0.0Citation fileNoWebsiteYes

Help pages: 3
Examples that run: 100%3 run in a plain check
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 33%

How these are measured

Downloads

513

CRAN downloads in the past year

Rank #24,925 · ~1/day · ~43/mo

Releases R versions

Daily download trend is not available in this view yet.

15630 days

45390 days

5131 year

Compare downloads with other packages →

Also on13 r2u2 autocran

How downloads are counted

Repository

arijitray2/magic-rectangles ↗Account: Arijitray2

0Stars

0Forks

0Open issues

0Open PRs

0Releases

Last activity 2026-07-11

Responsiveness

not measured

How these are measured

PracticesBeta

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

Checks run against github.com/arijitray2/magic-rectangles on 2026-10-21.

Docs source (1)

GitHub Pages site last deployed 2026-07-11

CRAN release process (1)

cran-comments.md

How this is detected·Detection ruleset v4 (2026-10-20)

AI coding toolsBeta

This repository shows signs of AI coding tools.

Claude Codefirst seen 2026-07-10
Commits: at least 6 crediting it in the message

Counts are commits, not lines of code. Commits by a tool's accounts count once across all of its accounts. Commits crediting it are the largest count among its credit lines, a minimum.How this is detected·Detection ruleset v4 (updated 2026-09-27)

Dependencies

Declared dependencies

0 external dependencies (excludes base and recommended)

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

Depends (0)

none

Imports (0)

none

LinkingTo (0)

none

Suggests (0)

none

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)

Arijit Ray

Author, Maintainer since 1.0.0 (2026)

Releases (1)

1.0.0Latest
record
2026-07-19 · current release
R
R 4.6.0 released · 2026-04-24

Package metadata

First published: 2026-07-19
Total releases: 1 / 1 yrs
License: MIT + file LICENSE OSI
Download size: 8.8 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("magicrect")

Format

Ray, A. (2026). magicrect: Construct Magic Rectangles and Nearly Magic Rectangles (Version 1.0.0) [Computer software]. https://doi.org/10.32614/CRAN.package.magicrect

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 magicrect version 1.0.0 [Data set]. HJJB, LLC. Data release v2026-10-25. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-25, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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