focus

0.1.9

Online Changepoint Detection in Univariate and Multivariate Data Streams

0packages depend

1.5Kdownloads / 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)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

# 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: 2.2 min · r-oldrel-windows-x86_64

Check history

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

Documentation

Documentation signals are not tracked yet for this package.

Downloads

1.5K

CRAN downloads in the past year

Rank #10,021 · ~4/day · ~124/mo

focus Releases R versions

Daily download trend is not available in this view yet.

34030 days

1.1K90 days

1.5K1 year

Compare downloads with other packages →

Also on153 r2u28 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

C. B. Barber

Contributor, Copyright holder

The Geometry Center

Translators (1)

Gaetano Romano

Author, Maintainer, Translator

Package Timeline

7 releases. 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: not tracked yet
Installed size: not tracked yet
With dependencies: not tracked yet

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