R Observatory: Metrics for fChange version 2.1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

fChange

2.1.0Package record

Functional Change Point Detection and Analysis

0packages dependsuggested by 1

2.8Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Jeremy VanderDoesCRAN page ↗Website ↗

Analyze functional data and its change points. Includes functionality to store and process data, summarize and validate assumptions, characterize and perform inference of change points, and provide visualizations. Data is stored as discretely collected observations without requiring the selection of basis functions. For more details see chapter 8 of Horvath and Rice (2024) doi:10.1007/978-3-031-51609-2. Additional papers are forthcoming. Focused works are also included in the documentation of corresponding functions.

Changes in 2.1.0

Create more stable package so that further updates will be more precise
Forecasting bounds and options
Add Seasonality to dfts rather than functions
CIDR and OCIDR inclusion
Fix PCA calculations and when only 1 dimension is used
Changes for the workshop article
Update tests for dependency package updates
Clean-up documentation
Squashing many bugs

From NEWS.md in the release

Install

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

install.packages("fChange", 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-fchange

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-fChange

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-fChange

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: 12.0 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-06-09
ERROR12 OK, 1 ERROR2026-06-08
OK13 OK2026-05-11

Show 6 earlier changesHide 6 earlier changes

WARNING12 OK, 1 WARNING2026-05-10
OK14 OK2026-04-22
ERROR13 OK, 1 ERROR2026-04-18
OK14 OK2026-04-10
ERROR13 OK, 1 ERROR2026-04-09
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 2.1.0

READMEYes · 109 wordsVignettesNoNEWSYes · 100% structured · mentions 2.1.0Citation fileNoWebsiteYes · pkgdown

The repository also keeps web-only articles.

Help pages: 48 (2 internal)includes a package overview page
Examples that run: 100%41 run in a plain check
Exported functions with examples: 97%
Documented parameters: 95%
Return-value docs: 100%
Help pages citing references: 27%

How these are measured

Downloads

2.8K

CRAN downloads in the past year

Rank #12,540 · ~8/day · ~233/mo

Releases R versions

Daily download trend is not available in this view yet.

33230 days

87990 days

2.8K1 year

Compare downloads with other packages →

Also on352 r2u8 autocran

How downloads are counted

Repository

jrvanderdoes/fchange ↗Account: jrvanderdoes

1Stars

0Forks

1Open issues

0Open PRs

1Releases

937Commits

1Commit identities

License file reads as GPL-3.0 · 937 commits · Last activity 2025-06-21 · 0% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 100%
Median days to close, 50 most recently updated closed issues: 5
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2022-11-03 · 12026-07-07 · 1

How these are measured

PracticesBeta

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

Checks run against github.com/jrvanderdoes/fchange 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

Governance and community (1)

CODEOWNERS

Docs source (4)

README.Rmdpkgdown

GitHub Pages site last deployed 2025-06-21 · The repository has a site deploy workflow

pkgdown site last built 2025-06-21

Reproducibility and dev environment (1)

data-raw/

Show all practicesHide 2 practices

CRAN release process (2)

cran-comments.mdrevdep/

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

28 external dependencies (excludes base and recommended)

Installing fChange adds 160 packages (88 with compiled code, 132 MB of source tarballs). Heaviest: stringi 11 MB, ggplot2 6.0 MB, data.table 5.7 MB.

Depends (1)

R >= 2.10

Imports (23)

dplyr fastmatrix fda ftsa ggplot2 ggpubrgraphicsgrDevicesMASSmethodsplot3D plotly rainbow RColorBrewer Rcpp RcppArmadillo Rfast sandwich scalesstatstensorA tidyr vars

LinkingTo (2)

Rcpp RcppArmadillo

Suggests (9)

CompQuadForm fda.usc forecast funData jmuOutlier knitrlatticermarkdown testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Suggested by 1

Suggests, most downloaded first

ggchangepoint

How these are counted

Code & Tests

Datasets

People & History

People (3)

Jeremy VanderDoes

Gregory Rice

Author

Martin Wendler

Author · added in 2.0.0

Previously maintained by Ozan Sonmez (0.1.0 to 0.2.1).

Listed in earlier versions (2)

Alexander Aue

no longer listed · 0.1.0 to 0.2.1

Ozan Sonmez

no longer listed · 0.1.0 to 0.2.1

Releases (5)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
2.1.0Latest
record
2025-06-21 · current release · diff ↗ ·
added 4 exports
cidr, ocidr, pca_components, sacf
R
R 4.5.0 released · 2025-04-11
unarchivedReturned to CRAN
2025-03-27
2.0.0
record
2025-03-27 · diff ↗ ·
removed 18 exports
Conf_int, Cov_test, LongRun, LongRunCovMatrix, center_data, change_FF, change_fPCA, eval_component, eval_joint, fun_AR, fun_IID, fun_MA, fun_heavy_tailed, insert_change, opt_bandwidth, partial_cov, pick_dim, trace_change

added 38 exports
%>%, acf, adaptive_bandwidth, as.dfts, autocorrelation, autocovariance, bartlett_kernel, center, confidence_interval, daniell_kernel, dfts, fchange, flat_top_kernel, generate_brownian_bridge, generate_brownian_motion, generate_data, generate_far1, generate_karhunen_loeve, generate_ornstein_uhlenbeck, impute, is.dfts, kpss_test, long_run_covariance, pacf, parzen_kernel, pca, pca_examination, portmanteau_tests, projection_model, qqplot and 8 more
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
archivedRemoved from CRAN
2020-03-07
check problems were not corrected despite reminders
R
R 3.6.0 released · 2019-04-26
0.2.1
record
2019-02-24 · diff ↗
0.2.0
record
2018-11-26 · diff ↗ ·
added 6 exports
Cov_test, LongRunCovMatrix, eval_component, eval_joint, partial_cov, trace_change
R
R 3.5.0 released · 2018-04-23
0.1.0
record
2017-07-29

Show 1 earlier eventHide 1 earlier event

R
R 3.4.0 released · 2017-04-21

Package metadata

First published: 2017-07-29
Total releases: 5 / 9 yrs
License: GPL (>= 3) OSI · relicensed from MIT + file LICENSE in 2.0.0
Minimum R: ≥ 2.10
Bundled data: 675 KB / 5 files
Download size: 809 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("fChange")

Format

VanderDoes, J., Rice, G., & Wendler, M. (2025). fChange: Functional Change Point Detection and Analysis (Version 2.1.0) [Computer software]. https://doi.org/10.32614/CRAN.package.fChange

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 fChange version 2.1.0 [Data set]. HJJB, LLC. Data release v2026-10-18. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-18, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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