R Observatory: Metrics for mmapcharr version 0.3.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

mmapcharr

0.3.1Package record

Memory-Map Character Files

1packages depend

11.9Kdownloads / year

62.7%test coverage

13/13flavors OK

Overview

About

Maintained by Florian PrivéCRAN page ↗GitHub ↗Issues ↗

Uses memory-mapping to enable the random access of elements of a text file of characters separated by characters as if it were a simple R(cpp) matrix.

Install

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

install.packages("mmapcharr", 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("privefl/mmapcharr")

Development version from privefl/mmapcharr. 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-mmapcharr

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-mmapcharr

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-mmapcharr

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: 2.8 min · r-devel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-06-09
NOTE12 OK, 1 NOTE2026-06-08
OK13 OK2026-05-02

Show 6 earlier changesHide 6 earlier changes

NOTE11 OK, 1 NOTE2026-04-25
OK14 OK2026-04-22
ERROR13 OK, 1 ERROR2026-04-18
OK14 OK2026-04-16
NOTE13 OK, 1 NOTE2026-03-28
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.3.1

README· In the repository, left out of the releaseVignettesNoNEWSNoCitation fileNoWebsitenot declared in DESCRIPTION

Help pages: 7 (1 internal)includes a package overview page
Examples that run: 100%4 run in a plain check
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 75%
Help pages citing references: 0%

How these are measured

Downloads

11.9K

CRAN downloads in the past year

Rank #4,435 · ~33/day · ~992/mo

Releases R versions

Daily download trend is not available in this view yet.

60630 days

1.9K90 days

11.9K1 year

Compare downloads with other packages →

Also on546 r2u2 autocran3.2K conda_forge

How downloads are counted

Repository

privefl/mmapcharr ↗Account: privefl

6Stars

0Forks

0Open issues

0Open PRs

0Releases

32Commits

1Commit identities

32 commits · Last activity 2025-11-27 · +20% 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

2024-10-05 · 52026-09-30 · 6

How these are measured

PracticesBeta

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

Checks run against github.com/privefl/mmapcharr on 2026-10-21.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

4 external dependencies (excludes base and recommended)

Installing mmapcharr adds 5 packages (3 with compiled code, 2.4 MB of source tarballs). Heaviest: Rcpp 1.8 MB, ff 321 KB, bit 297 KB.

Depends (1)

R >= 3.3.0

Imports (2)

methodsRcpp

LinkingTo (2)

Rcpp rmio

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

Imports 1 · LinkingTo 1

Depends, Imports or LinkingTo, most downloaded first

pcadapt

How these are counted

Code & Tests

People & History

People (1)

Florian Privé

Author, Maintainer since 0.1.0 (2017)

Releases (3)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
0.3.1Latest
record
2025-11-28 · current release · diff ↗
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
0.3.0
record
2019-02-26 · diff ↗
R
R 3.5.0 released · 2018-04-23
0.1.0
record
2017-12-12
R
R 3.4.0 released · 2017-04-21

Package metadata

First published: 2017-12-12
Total releases: 3 / 9 yrs
License: GPL-3 OSI
Minimum R: ≥ 3.3.0
Download size: 73 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("mmapcharr")

Format

Privé, F. (2025). mmapcharr: Memory-Map Character Files (Version 0.3.1) [Computer software]. https://doi.org/10.32614/CRAN.package.mmapcharr

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 mmapcharr version 0.3.1 [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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