R Observatory: Metrics for ferrn version 0.3.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

ferrn

0.3.0

Facilitate Exploration of touRR optimisatioN

0packages depend

3.2Kdownloads / year

18.3%test coverage

13/13flavors OK

Overview

About

Maintained by H. Sherry ZhangCRAN page ↗GitHub ↗Website ↗Issues ↗

Diagnostic plots for optimisation, with a focus on projection pursuit. These show paths the optimiser takes in the high-dimensional space in multiple ways: by reducing the dimension using principal component analysis, and also using the tour to show the path on the high-dimensional space. Several botanical colour palettes are included, reflecting the name of the package. A paper describing the methodology can be found at https://journal.r-project.org/articles/RJ-2021-105/index.html.

Changes in 0.3.0

New ggplot2 implementation to plot the huber plot: geom_huber()
New functionalities to calculate smoothness and squintability: calc_smoothness() and calc_squintability()

From NEWS.md in the release

Install

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

install.packages("ferrn", 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("huizezhang-sherry/ferrn")

Development version from huizezhang-sherry/ferrn. 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-ferrn

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-ferrn

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-ferrn

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

13OK

CRAN check page ↗

Slowest check: 2.9 min · r-oldrel-macos-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-06-09
ERROR12 OK, 1 ERROR2026-06-08
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.3.0

READMEYes · 329 wordsVignettesNoNEWSYes · 100% structured · mentions 0.3.0Citation fileYes · cites a publicationWebsiteYes · pkgdown

Cites an R Journal article

Help pages: 32 (2 internal)includes a package overview page
Examples that run: 94%17 run in a plain check · 1 never run
Exported functions with examples: 55%
Documented parameters: 97%
Return-value docs: 93%
Help pages citing references: 0%

How these are measured

Downloads

3.2K

CRAN downloads in the past year

Rank #9,053 · ~9/day · ~271/mo

Releases R versions

Daily download trend is not available in this view yet.

43830 days

1K90 days

3.2K1 year

Compare downloads with other packages →

Also on104 r2u13 autocran

How downloads are counted

Repository

huizezhang-sherry/ferrn ↗Account: huizezhang-sherry

6Stars

2Forks

1Open issues

0Open PRs

1Releases

258Commits

4Commit identities

258 commits · Last activity 2025-11-20 · The default branch showed an older version (0.2.0) than CRAN on 2026-10-11

Responsiveness

How these are sampled

PRs merged (all time): 0%
Median days to close, 50 most recently updated closed issues: 34
Median days to close, 50 most recently updated closed PRs: 1,093

Stars over time

2023-04-21 · 62026-07-07 · 6

How these are measured

PracticesBeta

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

Checks run against github.com/huizezhang-sherry/ferrn on 2026-10-11.

Continuous integration (2)

GitHub ActionsR CMD check workflow

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

Docs source (4)

README.Rmdpkgdown

GitHub Pages site last deployed 2025-11-20 · The repository has a site deploy workflow

pkgdown site last built 2025-11-20

Coverage (1)

Coverage reporting (Codecov)

Reproducibility and dev environment (1)

data-raw/

Show all practicesHide 2 practices

CRAN release process (1)

cran-comments.md

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

26 external dependencies (excludes base and recommended)

Installing ferrn adds 83 packages (52 with compiled code, 92 MB of source tarballs). Heaviest: BH 14 MB, stringi 11 MB, sf 9.3 MB.

Depends (1)

R >= 4.1.0

Imports (17)

rlang dplyr magrittr scales gganimate ggplot2 tibble purrr tourr stringr ggrepel ggforce tidyr cli progress glue GpGp

LinkingTo (0)

none

Suggests (9)

roxygen2 covr pkgdown testthat forcats patchwork future.apply ash vdiffr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

Datasets

People & History

People (5)

H. Sherry Zhang

Author, Maintainer since 0.0.1 (2021)

Dianne Cook

Author · added in 0.0.2

Ursula Laa

Author

Nicolas Langrené

Author

Patricia Menéndez

Author

Listed in earlier versions (1)

Di Cook

no longer listed · 0.0.1

Releases (4)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
0.3.0Latest
record
2025-11-20 · current release · diff ↗ ·
added 6 exports
GeomHuber, StatHuber, geom_huber, prep_huber_best_proj, stat_huber, theme_huber
R
R 4.5.0 released · 2025-04-11
0.1.0
record
2024-06-24 · diff ↗ ·
added 9 exports
calc_smoothness, calc_squintability, compute_projection, explore_space_end, explore_space_start, fit_ks, fit_nls, plot_projection, sample_bases
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
0.0.2
record
2022-08-06 · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
0.0.1
record
2021-03-17
R
R 4.0.0 released · 2020-04-24

Package metadata

First published: 2021-03-17
Total releases: 4 / 5 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 4.1.0
Bundled data: 1.1 MB / 19 files
Download size: 3.2 MB

Appears in task views

Dynamic Visualizations and Interactive Graphics

Cite

Cite this package

Run in R for the authors' entry:

citation("ferrn")

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

It points to 10.32614/rj-2021-105.

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 ferrn version 0.3.0 [Data set]. HJJB, LLC. Data release v2026-10-17. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-17, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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