R Observatory: Metrics for imagefluency version 1.0.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

imagefluency

1.0.0Package record

Image Statistics Based on Processing Fluency

0packages depend

10.8Kdownloads / year

91.8%test coverage

11/13flavors OK

Overview

About

Maintained by Stefan MayerCRAN page ↗GitHub ↗Website ↗Issues ↗

Get image statistics based on processing fluency theory. The functions provide scores for several basic aesthetic principles that facilitate fluent cognitive processing of images: contrast, complexity / simplicity, self-similarity, symmetry, and typicality. See Mayer & Landwehr (2018) doi:10.1037/aca0000187 and Mayer & Landwehr (2018) doi:10.31219/osf.io/gtbhw for the theoretical background of the methods.

Changes in 1.0.0

redesigned the Shiny dashboard with multi-image upload, integrated results, image comparison, and CSV export
added optional collapse-based speedups for self-similarity, symmetry, and typicality computations, while retaining base R fallbacks
made the complexity tests more robust across platforms and updated the test suite to modern testthat conventions
fixed img_complexity() normalization for array inputs outside the [0, 1] range to avoid platform-dependent results

From NEWS.md in the release

Install

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

install.packages("imagefluency", 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("stm/imagefluency")

Development version from stm/imagefluency. 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-imagefluency

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-imagefluency

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-imagefluency

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

2ERROR11OK

Check messages

ERRORtestsr-devel-linux-x86_64-fedora-clang, r-devel-linux-x86_64-fedora-gcc

Running ‘testthat.R’
Running the tests in ‘tests/testthat.R’ failed.
Complete output:
  > library(testthat)
  > library(imagefluency)
  > 
  > test_check("imagefluency")
  Saving _problems/test_complexity-65.R
  [ FAIL 1 | WARN 0 | SKIP 0 | PASS 107 ]
  
  ══ Failed tests ════════════════════════════════════════════════════════════════
  ── Failure ('test_complexity.R:65:3'): img_complexity works as intended (gives correct / consistent results) ──
  Expected `results` to equal 0.1600421.
  Differences:
    `actual`: 0.158
  `expected`: 0.160
  
  
  [ FAIL 1 | WARN 0 | SKIP 0 | PASS 107 ]
  Error:
  ! Test failures.
  Execution halted

CRAN check page ↗

Slowest check: 6.3 min · r-oldrel-windows-x86_64

Status changes

ERROR11 OK, 2 ERRORNow
ERROR12 OK, 2 ERROR2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.0.0

READMEYes · 521 wordsVignettesYes · 1 · dynamicNEWSYes · 100% structured · mentions 1.0.0Citation fileNoWebsiteYes · pkgdown

Help pages: 20 (10 internal)includes a package overview page
Examples that run: 100%10 run in a plain check (3 of them under a condition)
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 90%
Help pages citing references: 35%

Vignettes (1)

getting-started

How these are measured

Downloads

10.8K

CRAN downloads in the past year

Rank #4,061 · ~30/day · ~903/mo

Releases R versions

Daily download trend is not available in this view yet.

41030 days

2.2K90 days

10.8K1 year

Compare downloads with other packages →

Also on90 r2u4 autocran

How downloads are counted

Repository

stm/imagefluency ↗Account: stm

12Stars

1Forks

0Open issues

0Open PRs

7Releases

213Commits

1Commit identities

rrstatsr-packageimage-analysisimage-analyticsfluency

213 commits · Last activity 2026-06-03 · 0% stars, 30d · Default branch at 1.0.1, ahead of CRAN 1.0.0 (checked 2026-10-18)

Responsiveness

How these are sampled

PRs merged (all time): 0%
Median days to close, 50 most recently updated closed issues: 0
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2025-07-04 · 112026-07-07 · 12

How these are measured

PracticesBeta

8 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/stm/imagefluency 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 (2)

Code of conductIssue templates

Docs source (3)

pkgdown

GitHub Pages site last deployed 2026-06-03 · The repository has a site deploy workflow

pkgdown site last built 2026-06-03

Coverage (1)

Coverage reporting

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

Dependencies

Declared dependencies

19 external dependencies (excludes base and recommended)

Installing imagefluency adds 43 packages (26 with compiled code, 36 MB of source tarballs). Heaviest: bslib 5.6 MB, magick 4.4 MB, OpenImageR 3.6 MB.

Depends (1)

R >= 4.1.0

Imports (5)

R.utils readbitmap pracma magick OpenImageR

LinkingTo (0)

none

Suggests (15)

gridggplot2 scales shiny bslib testthat mockery knitr rmarkdown furrr future pbmcapply tictoc dplyr collapse

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

People & History

People (1)

Stefan Mayer

Author, Maintainer since 0.2.1 (2019)

Releases (6)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
unarchivedReturned to CRAN
2026-04-01
1.0.0Latest
record
2026-03-31 · current release · diff ↗
archivedRemoved from CRAN
2026-03-30
issues were not corrected in time
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
0.2.5
record
2024-02-22 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.2.4
record
2022-08-31 · 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
0.2.3
record
2020-01-09 · diff ↗
0.2.2
record
2019-12-12 · diff ↗
0.2.1
record
2019-09-27
R
R 3.6.0 released · 2019-04-26

Package metadata

First published: 2019-09-27
Total releases: 6 / 7 yrs
License: GPL-3 OSI
Minimum R: ≥ 4.1.0
Download size: 2.3 MB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("imagefluency")

Format

Mayer, S. (2026). imagefluency: Image Statistics Based on Processing Fluency (Version 1.0.0) [Computer software]. https://doi.org/10.32614/CRAN.package.imagefluency

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 imagefluency version 1.0.0 [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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