R Observatory: Metrics for dichromat version 2.0-1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

dichromat

2.0-1

Color Schemes for Dichromats

10packages depend

344.1Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Achim ZeileisFirst published 2002-05-249 releasesCRAN page ↗Codeberg ↗

Collapse red-green or green-blue distinctions to simulate the effects of different types of color-blindness based on the work of Françoise Viénot and co-authors, especially doi:10.1038/376127a0 and doi:10.1364/josaa.14.002647. More recent functions for simulating color vision deficiency are provided in the 'colorspace' package.

Install

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

install.packages("dichromat", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

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-dichromat

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

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-dichromat

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-dichromat

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 1.3 min · r-release-macos-x86_64

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

2

Dependencies · direct

Check history

OK2026-08-05
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 167 wordsVignettesNopkgdown siteNoNEWSYes · 67% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 50%
References docs: 100%

Downloads

344.1K

CRAN downloads in the past year

Rank #660 · ~943/day · ~28.7K/mo

Releases R versions

Daily download trend is not available in this view yet.

30K30 days

85.9K90 days

344.1K1 year

Compare downloads with other packages →

Also on1.7K r2u194 autocran30.7K conda_forge128 c2d4u

Repository

Codeberg ↗ zeileis/dichromat

Repository practices

Upstream repositoryBeta

Repository codeberg.org/zeileis/dichromat is linked, but repository-practices checks have not run for it yet. Checks are GitHub-only for now.

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

0 external dependencies (excludes base and recommended)

Depends (1)

R >= 2.10

Imports (2)

statsgrDevices

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

10direct

4indirect

autoGO pals ternvis dplR eSDM inlcolor rasterVis reems scales viridis

Code & Tests

Datasets

People & History

People (4)

Maintainer (1)

Achim Zeileis

Author, Maintainer · added in 2.0-0

Authors (2)

Achim Zeileis

Author, Maintainer · added in 2.0-0

Thomas Lumley

Author

Contributors (2)

Kenneth Knoblauch

Contributor · added in 2.0-1

Scott Waichler

Contributor · added in 2.0-0

Listed in earlier versions (1)

Ken Knoblauch

no longer listed · 2.0-0 to 2.0-0.1

Package Timeline

9 releases. Pick two to compare their code metrics. R releases are shown for context.

2.0-1Latest
2026-07-22 · current release · diff ↗
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
2.0-0.1
2022-05-02 · diff ↗
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
R
R 3.0.0 released · 2013-04-03

Show 28 earlier events

2.0-0
2013-01-24 · diff ↗
R
R 2.15.0 released · 2012-03-30
1.2-4
2012-01-06 · diff ↗
R
R 2.14.0 released · 2011-10-31
R
R 2.13.0 released · 2011-04-13
R
R 2.12.0 released · 2010-10-15
R
R 2.11.0 released · 2010-04-22
R
R 2.10.0 released · 2009-10-26
R
R 2.9.0 released · 2009-04-17
1.2-3
2009-02-25 · diff ↗
R
R 2.8.0 released · 2008-10-20
R
R 2.7.0 released · 2008-04-22
R
R 2.6.0 released · 2007-10-03
R
R 2.5.0 released · 2007-04-24
1.2-2
2007-04-20 · diff ↗
R
R 2.4.0 released · 2006-10-03
R
R 2.3.0 released · 2006-04-24
R
R 2.2.0 released · 2005-10-06
R
R 2.1.0 released · 2005-04-18
1.2-1
2004-11-05 · diff ↗
R
R 2.0.0 released · 2004-10-04
1.1
2004-08-06 · diff ↗
R
R 1.9.0 released · 2004-04-12
R
R 1.8.0 released · 2003-10-08
R
R 1.7.0 released · 2003-04-16
R
R 1.6.0 released · 2002-10-01
1.0
2002-05-24
R
R 1.5.0 released · 2002-04-29

Package metadata

First published: 2002-05-24
Total releases: 9 / 24 yrs
License: GPL-2 OSI
Minimum R: ≥ 2.10
Bundled data: 12 KB / 1 file
Download size: 125 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("dichromat")

Format

Zeileis, A., Knoblauch, K., Lumley, T., & Waichler, S. (2026). dichromat: Color Schemes for Dichromats (Version 2.0-1) [Computer software]. https://doi.org/10.32614/CRAN.package.dichromat

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

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 dichromat version 2.0-1 [Data set]. HJJB, LLC. Data release v2026-08-22. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-22, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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