anomalize

0.3.0

Tidy Anomaly Detection

2packages depend

41.5Kdownloads / year

79.0%test coverage

13/13checks pass

Overview

About

Maintained by Matt DanchoFirst published 2018-04-068 releasesCRAN page ↗GitHub ↗

The 'anomalize' package enables a "tidy" workflow for detecting anomalies in data. The main functions are time_decompose(), anomalize(), and time_recompose(). When combined, it's quite simple to decompose time series, detect anomalies, and create bands separating the "normal" data from the anomalous data at scale (i.e. for multiple time series). Time series decomposition is used to remove trend and seasonal components via the time_decompose() function and methods include seasonal decomposition of time series by Loess ("stl") and seasonal decomposition by piecewise medians ("twitter"). The anomalize() function implements two methods for anomaly detection of residuals including using an inner quartile range ("iqr") and generalized extreme studentized deviation ("gesd"). These methods are based on those used in the 'forecast' package and the Twitter 'AnomalyDetection' package. Refer to the associated functions for specific references for these methods.

Install

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

install.packages("anomalize", 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("business-science/anomalize")

Development version from business-science/anomalize. 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-anomalize

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-anomalize

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-anomalize

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

Health

CRAN checks

13OK

Slowest check: 4.6 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.25

79.0%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 461 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 75%
Documented parameters: 100%
Return-value docs: 92%
References docs: 29%

Downloads

41.5K

CRAN downloads in the past year

Rank #3,872 · ~114/day · ~3.5K/mo

Releases R versions

Daily download trend is not available in this view yet.

74630 days

2.6K90 days

41.5K1 year

Compare downloads with other packages →

Also on172 r2u64 autocran104 c2d4u

Repository

GitHub ↗ business-science/anomalize

339Stars

61Forks

35Open issues

3Open PRs

0Releases

125Commits

7Contributors

detect-anomaliesdecompositioniqrtime-seriesanomaly-detectionanomalyr-package

125 commits · Last activity 2023-12-28 · 0% stars, 30d

Stars over time

2025-06-22 · 3372026-07-07 · 339

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/business-science/anomalize on 2026-07-19.

Continuous integration (1)

GitHub Actions

Reproducibility and dev environment (1)

data-raw/

CRAN release process (2)

cran-comments.mdCRAN-SUBMISSION

Docs source (1)

README.Rmd

Show all practices

Lint, format, editor (1)

RStudio project

Coverage (1)

Codecov

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

19 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.0.0

Imports (10)

dplyr glue timetk sweep tibbletime purrr rlang tibble tidyr ggplot2

LinkingTo (0)

none

Suggests (9)

tidyverse tidyquant stringr testthat covr knitr rmarkdown devtools roxygen2

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

2direct

0indirect

pathviewr whippr

Code & Tests

Code Composition

R 2,840 (64%)Rd 914 (21%)Vignettes 683 (15%)

Code characteristics

Object systems

S326

Cyclomatic complexity: 1.0 median / 8 max
Test cases: 45 / 0.25 per code line

Test coverage

Line coverage

79%

Expression

81.5%

Tests / Examples

79.0% / 64% ex

Functions

62 17 exported

Complexity

2 avg / 8 max

Call network

62 nodes / 47 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

62 functions

Function	Cyclo	Coverage
set_time_scale_template exp	2	0%
time_scale_template exp	1	0%
.onLoad	1	0%
anomalize.default	1	0%
palette_dark	1	0%
palette_green	1	0%

People & History

People (2)

Maintainer (1)

Matt Dancho

Author, Maintainer

Authors (2)

Matt Dancho

Author, Maintainer

Davis Vaughan

Author

Package Timeline

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

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
0.3.0Latest
2023-10-31 · current release · diff ↗
0.2.4
2023-09-26 · diff ↗
unarchivedReturned to CRAN
2023-09-25
R
R 4.3.0 released · 2023-04-21
archivedRemoved from CRAN
2023-03-23
requires archived package 'sweep'
0.2.3
2023-02-09 · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
0.2.2
2020-10-20 · diff ↗
0.2.1
2020-06-19 · diff ↗
unarchivedReturned to CRAN
2020-06-19
archivedRemoved from CRAN
2020-06-15
check problems were not corrected in time
R
R 4.0.0 released · 2020-04-24

Show 6 earlier events

0.2.0
2019-09-21 · diff ↗
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
0.1.1
2018-04-17 · diff ↗
0.1.0
2018-04-06
R
R 3.4.0 released · 2017-04-21

Package metadata

First published: 2018-04-06
Total releases: 8 / 8 yrs
License: GPL (>= 3) OSI
Minimum R: ≥ 3.0.0
Bundled data: 40 KB / 1 file
Download size: 2.9 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Anomaly Detection

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