imgpalr

0.4.0

Create Color Palettes from Images

0packages depend

3.1Kdownloads / year

90.9%test coverage

13/13checks pass

Overview

About

Maintained by Matthew LeonawiczFirst published 2019-07-266 releasesCRAN page ↗GitHub ↗

Provides ability to create color palettes from image files. It offers control over the type of color palette to derive from an image (qualitative, sequential or divergent) and other palette properties. Quantiles of an image color distribution can be trimmed. Near-black or near-white colors can be trimmed in RGB color space independent of trimming brightness or saturation distributions in HSV color space. Creating sequential palettes also offers control over the order of HSV color dimensions to sort by. This package differs from other related packages like 'RImagePalette' in approaches to quantizing and extracting colors in images to assemble color palettes and the level of user control over palettes construction.

Install

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

install.packages("imgpalr", 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("leonawicz/imgpalr")

Development version from leonawicz/imgpalr. 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-imgpalr

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-imgpalr

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-imgpalr

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

Health

CRAN checks

13OK

Slowest check: 1.3 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.16

90.9%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 795 wordsVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 100%
References docs: 0%

Downloads

3.1K

CRAN downloads in the past year

Rank #15,304 · ~8/day · ~259/mo

Releases R versions

Daily download trend is not available in this view yet.

24630 days

69990 days

3.1K1 year

Compare downloads with other packages →

Also on109 r2u

Repository

GitHub ↗ leonawicz/imgpalr

53Stars

3Forks

0Open issues

0Open PRs

5Releases

34Commits

3Contributors

color-paletteimage-processingimage-classificationcolorrpackage

34 commits · Last activity 2024-09-19 · 0% stars, 30d

Stars over time

2025-01-18 · 512026-07-07 · 53

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/leonawicz/imgpalr on 2026-07-30.

Continuous integration (1)

GitHub Actions

Reproducibility and dev environment (1)

data-raw/

CRAN release process (2)

cran-comments.mdrevdep/

Docs source (1)

README.Rmd

Show all practices

Research and citation (1)

codemeta.json

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

10 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (6)

downloader farver tibble magrittr dplyr jpeg

LinkingTo (0)

none

Suggests (4)

testthat bmp png magick

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (1)

Maintainer (1)

Matthew Leonawicz

Author, Maintainer

Authors (1)

Matthew Leonawicz

Author, Maintainer

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
0.4.0Latest
2024-09-12 · current release · diff ↗
R
R 4.4.0 released · 2024-04-24
0.3.2
2023-09-10 · diff ↗
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
0.3.1
2021-02-21 · diff ↗
R
R 4.0.0 released · 2020-04-24
0.3.0
2019-11-28 · diff ↗
0.2.2
2019-10-26 · diff ↗
0.2.1
2019-07-26
R
R 3.6.0 released · 2019-04-26

Package metadata

First published: 2019-07-26
Total releases: 6 / 7 yrs
License: MIT + file LICENSE OSI
Download size: 1.1 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Report a problem with this page →