R Observatory: Metrics for focus version 0.1.9

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

focus

0.1.9

Online Changepoint Detection in Univariate and Multivariate Data Streams

0packages depend

1.7Kdownloads / year

5.1%test coverage

13/13checks pass

Overview

About

Maintained by Gaetano RomanoFirst published 2026-03-307 releasesCRAN page ↗

Provides high-performance online changepoint detection in univariate and multivariate data streams. Implements efficient 'C++' backends for the 'focus', 'md-focus' and 'np-focus' algorithms, with an 'R' interface for real-time monitoring and offline analysis. The package bundles code from 'Qhull' http://www.qhull.org/, by C. B. Barber and The Geometry Center. See 'inst/COPYRIGHTS' for details.

Install

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

install.packages("focus", 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-focus

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-focus

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-focus

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

Health

CRAN checks

13OK

Slowest check: 3.0 min · r-devel-windows-x86_64

Code health

Yes

Tests · ratio 0.78

5.1%

Coverage · measured lines

1

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
OK2026-04-25
12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-04-22
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
11 OK · 1 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE

Show 1 earlier snapshots

NOTE2026-03-31
6 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 2,309 wordsVignettesNopkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 67%
Documented parameters: not tracked
Return-value docs: not tracked
References docs: 10%

Downloads

1.7K

CRAN downloads in the past year

Rank #11,399 · ~5/day · ~139/mo

Releases R versions

Daily download trend is not available in this view yet.

19330 days

86390 days

1.7K1 year

Compare downloads with other packages →

Also on182 r2u16 autocran

Dependencies

Declared dependencies

3 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (1)

Rcpp

LinkingTo (1)

Rcpp

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (9)

Maintainer (1)

Gaetano Romano

Author, Maintainer, Translator

Authors (7)

Gaetano Romano

Author, Maintainer, Translator

Author

Author

Author

Author

Author

Author

Contributors (1)

C. B. Barber

Contributor, Copyright holder

Copyright holders (2)

C. B. Barber

Contributor, Copyright holder

The Geometry Center

Copyright holder

Translators (1)

Gaetano Romano

Author, Maintainer, Translator

Package Timeline

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

0.1.9Latest
2026-07-23 · current release · diff ↗
0.1.8
2026-06-25 · diff ↗
0.1.7
2026-06-13 · diff ↗
0.1.6
2026-06-09 · diff ↗
0.1.5
2026-05-06 · diff ↗
R
R 4.6.0 released · 2026-04-24
0.1.3
2026-04-01 · diff ↗
0.1.2
2026-03-30
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2026-03-30
Total releases: 7 / 1 yrs
License: GPL (>= 3) OSI
Download size: 372 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("focus")

Format

Romano, G., The Geometry Center, Barber, C. B., Eckley, I. A., Fan, Y., Fearnhead, P., Rigaill, G., Runge, V., & Ward, K. (2026). focus: Online Changepoint Detection in Univariate and Multivariate Data Streams (Version 0.1.9) [Computer software]. https://doi.org/10.32614/CRAN.package.focus

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 focus version 0.1.9 [Data set]. HJJB, LLC. Data release v2026-08-18. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-18, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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