R Observatory: Metrics for qrencoder version 0.1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

qrencoder

0.1.0Package record

Quick Response Code (QR Code) / Matrix Barcode Creator

1packages depend

8.5Kdownloads / year

0.0%test coverage

9/13flavors OK

Overview

About

Maintained by Bob RudisCRAN page ↗GitHub ↗Issues ↗

Quick Response codes (QR codes) are a type of matrix bar code and can be used to authenticate transactions, provide access to multi-factor authentication services and enable general data transfer in an image. QR codes use four standardized encoding modes (numeric, alphanumeric, byte/binary, and kanji) to efficiently store data. Matrix barcode generation is performed efficiently in C via the included 'libqrencoder' library created by Kentaro Fukuchi.

Changes in 0.1.0

Added a NEWS.md file to track changes to the package.
Packaged libqrencoder with the package
CRAN release

From NEWS.md in the release

Install

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

install.packages("qrencoder", 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("hrbrmstr/qrencoder")

Development version from hrbrmstr/qrencoder. 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-qrencoder

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-qrencoder

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-qrencoder

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

4NOTE9OK

Check messages

NOTECRAN incoming feasibilityr-devel-linux-x86_64-debian-clang, r-devel-linux-x86_64-debian-gcc

Maintainer: ‘Bob Rudis <bob@rud.is>’

Found the following (possibly) invalid file URI:
  URI: CONDUCT.md
    From: README.md

NOTEcompiled coder-devel-linux-x86_64-fedora-clang, r-devel-linux-x86_64-fedora-gcc

File ‘qrencoder/libs/qrencoder.so’:
  Found no calls to: ‘R_registerRoutines’, ‘R_useDynamicSymbols’

It is good practice to register native routines and to disable symbol
search.

See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.

CRAN check page ↗

Slowest check: 6.4 min · r-oldrel-windows-x86_64

Status changes

NOTE9 OK, 4 NOTENow
NOTE7 OK, 7 NOTE2026-04-22
ERROR6 OK, 7 NOTE, 1 ERROR2026-04-18
NOTE7 OK, 7 NOTE2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.1.0

READMEYes · 188 wordsVignettesNoNEWSYes · 67% structured · mentions 0.1.0Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 6includes a package overview page
Examples that run: 100%4 run in a plain check
Exported functions with examples: 80%
Documented parameters: 100%
Return-value docs: 0%
Help pages citing references: 0%

How these are measured

Downloads

8.5K

CRAN downloads in the past year

Rank #9,040 · ~23/day · ~705/mo

Releases R versions

Daily download trend is not available in this view yet.

31230 days

1.1K90 days

8.5K1 year

Compare downloads with other packages →

Also on384 r2u3 autocran

How downloads are counted

Repository

hrbrmstr/qrencoder ↗Account: hrbrmstr

62Stars

7Forks

5Open issues

0Open PRs

0Releases

25Commits

3Commit identities

rrstatsqrcodeqrcode-generator

25 commits · Last activity 2018-11-11 · 0% stars, 30d · Default branch at 0.2.1, ahead of CRAN 0.1.0 (checked 2026-10-21)

Responsiveness

How these are sampled

PRs merged (all time): 100%
Median days to close, 50 most recently updated closed issues: 26
Median days to close, 50 most recently updated closed PRs: 3

Stars over time

2025-08-13 · 612026-07-07 · 62

How these are measured

PracticesBeta

6 development-tooling and community-health practices detected across 5 families in the upstream repository

Checks run against github.com/hrbrmstr/qrencoder on 2026-10-21.

Continuous integration (1)

Travis CI (config file)

Governance and community (2)

Code of conduct

The repository owner accepts GitHub Sponsors

Docs source (1)

README.Rmd

CRAN release process (1)

cran-comments.md

Show all practicesHide 1 practice

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

6 external dependencies (excludes base and recommended)

Installing qrencoder adds 6 packages (6 with compiled code, 8.2 MB of source tarballs). Heaviest: sp 4.3 MB, Rcpp 1.8 MB, terra 1.5 MB.

Depends (2)

R >= 3.1.0raster

Imports (3)

Rcpp base64enc png

LinkingTo (1)

Rcpp

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

Imports 1

Depends, Imports or LinkingTo, most downloaded first

qrlabelr

How these are counted

Code & Tests

People & History

People (2)

Bob Rudis

Author, Maintainer since 0.1.0 (2016)

Kentaro Fukuchi

Contributor

libqrencoder

Releases (1)

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
0.1.0Latest
record
2016-09-16 · current release
R
R 3.3.0 released · 2016-05-03

Package metadata

First published: 2016-09-16
Total releases: 1 / 10 yrs
License: GPL-2 OSI
Minimum R: ≥ 3.1.0
Download size: 35 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("qrencoder")

Format

Rudis, B., & Fukuchi, K. (2016). qrencoder: Quick Response Code (QR Code) / Matrix Barcode Creator (Version 0.1.0) [Computer software]. https://doi.org/10.32614/CRAN.package.qrencoder

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 qrencoder version 0.1.0 [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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