R Observatory: Metrics for qrcode version 0.3.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

qrcode

0.3.0Package record

Generate QRcodes with R

3packages dependsuggested by 2

30.3Kdownloads / year

87.9%test coverage

0/13flavors OK

Overview

About

Maintained by Thierry OnkelinxCRAN page ↗GitHub ↗Website ↗Issues ↗

Create static QR codes in R. The content of the QR code is exactly what the user defines. We don't add a redirect URL, making it impossible for us to track the usage of the QR code. This allows to generate fast, free to use and privacy friendly QR codes.

Changes in 0.3.0

Add qr_vcard() to generate QR codes for a vCard.
Add qr_sepa() to generate QR codes for SEPA payments.
Add qr_location() to generate QR codes for locations.
generate_svg() now escapes the special characters &, ', ", <, >. Fixes #19 reported by @kaveelim.

From NEWS.md in the release

Install

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

install.packages("qrcode", 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("ThierryO/qrcode")

Development version from ThierryO/qrcode. 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-qrcode

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-qrcode

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-qrcode

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

13NOTE

Check messages

NOTEDESCRIPTION meta-informationr-devel-linux-x86_64-debian-clang, r-devel-linux-x86_64-debian-gcc, r-devel-linux-x86_64-fedora-clang, r-devel-linux-x86_64-fedora-gcc, r-devel-windows-x86_64, r-oldrel-macos-arm64, r-oldrel-macos-x86_64, r-oldrel-windows-x86_64, r-patched-linux-x86_64, r-release-linux-x86_64, r-release-macos-arm64, r-release-macos-x86_64, r-release-windows-x86_64

r-devel-linux-x86_64-debian-clang, r-devel-linux-x86_64-debian-gcc, r-devel-linux-x86_64-fedora-clang, r-devel-linux-x86_64-fedora-gcc, r-oldrel-macos-arm64, r-oldrel-macos-x86_64, r-patched-linux-x86_64, r-release-linux-x86_64, r-release-macos-arm64, r-release-macos-x86_64

Missing dependency on R >= 4.2.0 because package code uses the pipe
  placeholder syntax added in R 4.2.0.
  File(s) using such syntax:
    ‘qr_vcard.R’

r-devel-windows-x86_64, r-oldrel-windows-x86_64, r-release-windows-x86_64

Missing dependency on R >= 4.2.0 because package code uses the pipe
  placeholder syntax added in R 4.2.0.
  File(s) using such syntax:
    'qr_vcard.R'

NOTER code for possible problemsr-devel-linux-x86_64-debian-clang, r-devel-linux-x86_64-debian-gcc, r-devel-linux-x86_64-fedora-clang, r-devel-linux-x86_64-fedora-gcc, r-devel-windows-x86_64

Found calls to structure() using deprecated special names:
  qrcode/R/qr_mode.R (.Names: 1)
'.Names' should be changed to 'names'.

CRAN check page ↗

Slowest check: 1.5 min · r-oldrel-windows-x86_64

Status changes

NOTE13 NOTENow
NOTE12 NOTE, 1 FAILURE2026-06-08
WARNING12 NOTE, 1 WARNING2026-06-07
NOTE3 OK, 11 NOTE2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.3.0

READMEYes · 307 wordsVignettesNoNEWSYes · 100% structured · mentions 0.3.0Citation fileYes · software entry onlyWebsiteYes · pkgdown

Help pages: 21
Examples that run: 100%17 run in a plain check
Exported functions with examples: 75%
Documented parameters: 100%
Return-value docs: 31%
Help pages citing references: 0%

How these are measured

Downloads

30.3K

CRAN downloads in the past year

Rank #2,877 · ~83/day · ~2.5K/mo

Releases R versions

Daily download trend is not available in this view yet.

1.6K30 days

5K90 days

30.3K1 year

Compare downloads with other packages →

Also on188 r2u3 autocran1.9K conda_forge

How downloads are counted

Repository

thierryo/qrcode ↗Account: ThierryO

52Stars

8Forks

5Open issues

1Open PRs

7Releases

156Commits

3Commit identities

qrcodeqrcode-generatorr-packager-projectcran

License file reads as GPL-3.0 · 156 commits · Last activity 2024-09-29 · 0% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 90%
Median days to close, 50 most recently updated closed issues: 16
Median days to close, 50 most recently updated closed PRs: 4

Stars over time

2025-10-14 · 472026-09-15 · 52

How these are measured

PracticesBeta

15 development-tooling and community-health practices detected across 8 families in the upstream repository

Checks run against github.com/thierryo/qrcode on 2026-10-18.

Continuous integration (2)

GitHub ActionsR CMD check workflow

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

Governance and community (4)

Code of conductContributing guideFunding

Funding links: GitHub Sponsors

The repository owner accepts GitHub Sponsors

Docs source (3)

README.Rmdpkgdown

GitHub Pages site last deployed 2024-09-29

pkgdown site last built 2024-09-29

Coverage (1)

Coverage reporting (Codecov)

Show all practicesHide 4 practices

Reproducibility and dev environment (1)

data-raw/

CRAN release process (1)

cran-comments.md

Research and citation (2)

CITATION.cffZenodo

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

8 external dependencies (excludes base and recommended)

Installing qrcode adds 1 package (0 with compiled code, 12 KB of source tarballs). Heaviest: assertthat 12 KB.

Depends (1)

R >= 4.1.0

Imports (3)

assertthatstatsutils

LinkingTo (0)

none

Suggests (7)

httr jpeg knitr opencv png rsvg testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

3direct

0indirect

Depends 1 · Imports 2

Suggested by 2

Depends, Imports or LinkingTo, most downloaded first

huito baRcodeR gofigR

Suggests, most downloaded first

opencv serocalculator

How these are counted

Code & Tests

People & History

People (2)

Thierry Onkelinx

Author, Maintainer since 0.1.3 (2021) · added in 0.1.3

Author of the reimplemented functions

Victor Teh

Author

Original author

Previously maintained by Victor Teh (0.1.1).

Releases (7)

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
0.3.0Latest
record
2024-09-29 · current release · diff ↗ ·
added 3 exports
qr_location, qr_sepa, qr_vcard
R
R 4.4.0 released · 2024-04-24
0.2.2
record
2023-11-11 · diff ↗ ·
removed 7 exports
DataStringBinary, ECgenerator, qrFillUpMatrix, qrInterleave, qrMask, qrVersionInfo, qrcode_gen

added 1 export
coordinates
R
R 4.3.0 released · 2023-04-21
0.2.1
record
2022-12-18 · diff ↗ ·
added 1 export
add_logo
0.2.0
record
2022-11-19 · diff ↗ ·
added 2 exports
qr_event, qr_wifi
R
R 4.2.0 released · 2022-04-22
0.1.4
record
2021-10-13 · diff ↗ ·
added 9 exports
bits, bits2int, int2bits, qr_code, qr_encode, qr_error, qr_matrix, qr_mode, qr_version
0.1.3
record
2021-07-02 · diff ↗ ·
added 1 export
generate_svg
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

Show 3 earlier eventsHide 3 earlier events

R
R 3.3.0 released · 2016-05-03
0.1.1
record
2015-08-23
R
R 3.2.0 released · 2015-04-16

Package metadata

First published: 2015-08-23
Total releases: 7 / 11 yrs
License: GPL-3 OSI
Minimum R: ≥ 4.1.0
Download size: 41 KB

Cite

Cite this package

Run in R for the authors' entry:

citation("qrcode")

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

It points to 10.5281/zenodo.5040088.

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 qrcode version 0.3.0 [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.

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