R Observatory: Metrics for mefa4 version 0.3-12

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

mefa4

0.3-12Package record

Multivariate Data Handling with S4 Classes and Sparse Matrices

2packages dependsuggested by 1

4.8Kdownloads / year

82.2%test coverage

13/13flavors OK

Overview

About

Maintained by Peter SolymosCRAN page ↗GitHub ↗Issues ↗

An S4 update of the 'mefa' package using sparse matrices for enhanced efficiency. Sparse array-like objects are supported via lists of sparse matrices.

Install

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

install.packages("mefa4", 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("psolymos/mefa4")

Development version from psolymos/mefa4. 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-mefa4

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-mefa4

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-mefa4

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: 2.5 min · r-oldrel-macos-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.3-12

README· In the repository, left out of the releaseVignettesNoNEWS· In the repository, left out of the releaseCitation fileYes · cites a publication

Cites a JSS article

Help pages: 13includes a package overview page
Examples that run: 85%11 run in a plain check · 2 never run
Exported functions with examples: 100%
Documented parameters: 89%
Return-value docs: 100%
Help pages citing references: 15%

How these are measured

Downloads

4.8K

CRAN downloads in the past year

Rank #6,775 · ~13/day · ~397/mo

Releases R versions

Daily download trend is not available in this view yet.

58430 days

1.3K90 days

4.8K1 year

Compare downloads with other packages →

Also on83 r2u5 autocran

How downloads are counted

Repository

psolymos/mefa4 ↗Account: psolymos

0Stars

0Forks

0Open issues

0Open PRs

3Releases

733Commits

4Commit identities

sparse-matricesrcranecologydata-manipulation

733 commits · Last activity 2026-04-25

Responsiveness

How these are sampled

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

Releases over time

2018-07-06 · 32026-07-07 · 3

How these are measured

PracticesBeta

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

Checks run against github.com/psolymos/mefa4 on 2026-10-18.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on macOS

Docs source (3)

pkgdown

GitHub Pages site last deployed 2026-04-25 · The repository has a site deploy workflow

Lint, format, editor (1)

RStudio project

Git structural (1)

.gitattributes

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

Dependencies

Declared dependencies

1 external dependency (excludes base and recommended)

Installing mefa4 adds no packages beyond those that come with R.

Depends (3)

R >= 3.2.0methodsMatrix

Imports (0)

none

LinkingTo (0)

none

Suggests (1)

mefa

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

2direct

0indirect

Depends 1 · Imports 1

Suggested by 1

Depends, Imports or LinkingTo, most downloaded first

bSims opticut

Suggests, most downloaded first

mefa

How these are counted

Code & Tests

Datasets

People & History

People (1)

Peter Solymos

Author, Maintainer since 0.2-0 (2011)

Releases (28)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03
R
R 3.2.0 released · 2015-04-16
R
R 3.1.0 released · 2014-04-10
3.0.2Latest
record
2013-09-25 · current release · diff ↗
R
R 3.0.0 released · 2013-04-03
2.15.2
record
2012-07-06 · diff ↗

Show 30 earlier eventsHide 30 earlier events

2.15.1
record
2012-05-02 · diff ↗
R
R 2.15.0 released · 2012-03-30
2.15.0
record
2012-03-19 · diff ↗
R
R 2.14.0 released · 2011-10-31
2.13.2
record
2011-08-23 · diff ↗
2.13.1
record
2011-05-13 · diff ↗
R
R 2.13.0 released · 2011-04-13
2.12.2
record
2011-02-14 · diff ↗ ·
added 1 export
Melt
0.3-12
record
2025-07-14 · diff ↗
0.3-11
record
2024-05-20 · diff ↗
0.3-9
record
2022-09-12 · diff ↗
0.3-8
record
2021-10-06 · diff ↗
0.3-7
record
2020-02-28 · diff ↗
0.3-6
record
2019-06-21 · diff ↗
0.3-5
record
2018-03-25 · diff ↗ ·
added 1 export
sum_by
0.3-4
record
2016-10-14 · diff ↗ ·
added 4 exports
normalizeNames, reclass, redistribute, %notin%
0.3-3
record
2016-03-01 · diff ↗ ·
added 3 exports
compare_sets, find_max, find_min
0.3-2
record
2015-11-22 · diff ↗ ·
added 1 export
r2rmd
0.3-1
record
2014-05-16 · diff ↗ ·
added 3 exports
pasteDate, paste0date, nameAlnum
0.3-0
record
2013-10-08 · diff ↗
0.2-9
record
2013-07-11 · diff ↗
0.2-8
record
2012-07-07 · diff ↗
0.2-7
record
2012-05-14 · diff ↗
0.2-6
record
2012-03-19 · diff ↗
0.2-4
record
2011-10-17 · diff ↗
0.2-3
record
2011-08-23 · diff ↗
0.2-2
record
2011-07-23 · diff ↗
0.2-1
record
2011-05-15 · diff ↗
0.2-0
record
2011-02-10
R
R 2.12.0 released · 2010-10-15

Package metadata

First published: 2011-02-10
Total releases: 28 / 15 yrs
License: GPL-2 OSI
Minimum R: ≥ 3.2.0
Bundled data: 293 KB / 1 file
Download size: 316 KB

Cite

Cite this package

Run in R for the authors' entry:

citation("mefa4")

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

It points to 10.18637/jss.v029.i08.

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 mefa4 version 0.3-12 [Data set]. HJJB, LLC. Data release v2026-10-21. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-21, which the citation names so these numbers can be found later. More on citing and the projects behind them.

Report a problem with this page →