R Observatory: Metrics for epca version 1.1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

epca

1.1.0Package record

Exploratory Principal Component Analysis

0packages dependsuggested by 1

2.8Kdownloads / year

0.0%test coverage

0/13flavors OK

Overview

About

Maintained by Fan ChenCRAN page ↗GitHub ↗Issues ↗

Exploratory principal component analysis for large-scale dataset, including sparse principal component analysis and sparse matrix approximation.

Changes in 1.1.0

Fixed the unstable column ordering
Updated vignette

From NEWS.md in the release

Install

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

install.packages("epca", 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("fchen365/epca")

Development version from fchen365/epca. 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-epca

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-epca

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-epca

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

NOTERd filesr-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

checkRd: (-1) misClustRate.Rd:18: Lost braces; missing escapes or markup?
    18 | Compute the empirical MCR, assuming that #{cluster} = #{block},
       |                                           ^
checkRd: (-1) misClustRate.Rd:18: Lost braces; missing escapes or markup?
    18 | Compute the empirical MCR, assuming that #{cluster} = #{block},
       |                                                        ^

CRAN check page ↗

Slowest check: 1.4 min · r-oldrel-windows-x86_64

Status changes

NOTE13 NOTE2026-06-09
ERROR12 NOTE, 1 ERROR2026-06-08
NOTE14 NOTE2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.1.0

READMEYes · 167 wordsVignettesYes · 1 · dynamicNEWSYes · 100% structured · mentions 1.1.0Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 28includes a package overview page
Examples that run: 85%11 run in a plain check · 1 only when donttest examples are enabled (R CMD check --as-cran) · 1 hold no code
Exported functions with examples: 100%
Documented parameters: 88%
Return-value docs: 100%
Help pages citing references: 36%

Vignettes (1)

Explore multivariate data with `epca` HTML

How these are measured

Downloads

2.8K

CRAN downloads in the past year

Rank #13,368 · ~8/day · ~234/mo

Releases R versions

Daily download trend is not available in this view yet.

31630 days

85790 days

2.8K1 year

Compare downloads with other packages →

Also on69 r2u9 autocran

How downloads are counted

Repository

fchen365/epca ↗Account: fchen365

12Stars

2Forks

2Open issues

0Open PRs

0Releases

32Commits

2Commit identities

pcaexploratory-data-analysismatrix-decompositionssparse-matrixprincipal-component-analysiscommunity-detection

License file reads as GPL-3.0 · 32 commits · Last activity 2024-05-06 · 0% stars, 30d

Responsiveness

not measured

Stars over time

2024-05-02 · 112026-07-07 · 12

How these are measured

PracticesBeta

2 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/fchen365/epca on 2026-10-18.

Docs source (1)

README.Rmd

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

14 external dependencies (excludes base and recommended)

Installing epca adds 3 packages (2 with compiled code, 2.7 MB of source tarballs). Heaviest: GPArotation 1.6 MB, clue 727 KB, irlba 375 KB.

Depends (1)

R >= 3.5

Imports (4)

clue irlbaMatrixGPArotation

LinkingTo (0)

none

Suggests (11)

elasticnet ggcorrplot tidyverse rmarkdown reshape2 markdown RSpectra matlabr knitr PMA testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Suggested by 1

Suggests, most downloaded first

gdim

How these are counted

Code & Tests

Datasets

People & History

People (1)

Fan Chen

Author, Maintainer since 1.0.0 (2020)

Releases (3)

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
R
R 4.4.0 released · 2024-04-24
1.1.0Latest
record
2023-07-10 · current release · diff ↗
R
R 4.3.0 released · 2023-04-21
unarchivedReturned to CRAN
2023-02-07
1.0.1
record
2023-02-07 · diff ↗
archivedRemoved from CRAN
2022-05-25
requires archived package 'matlab'
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
1.0.0
record
2020-06-26
R
R 4.0.0 released · 2020-04-24

Package metadata

First published: 2020-06-26
Total releases: 3 / 6 yrs
License: GPL-3 OSI
Minimum R: ≥ 3.5
Bundled data: 0.8 KB / 2 files
Download size: 343 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("epca")

Format

Chen, F. (2023). epca: Exploratory Principal Component Analysis (Version 1.1.0) [Computer software]. https://doi.org/10.32614/CRAN.package.epca

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 epca version 1.1.0 [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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