R Observatory: Metrics for frechet version 0.3.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

frechet

0.3.0Package record

Statistical Analysis for Random Objects and Non-Euclidean Data

0packages depend

3.7Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Yaqing ChenCRAN page ↗GitHub ↗Issues ↗

Provides implementation of statistical methods for random objects lying in various metric spaces, which are not necessarily linear spaces. The core of this package is Fréchet regression for random objects with Euclidean predictors, which allows one to perform regression analysis for non-Euclidean responses under some mild conditions. Examples include distributions in 2-Wasserstein space, covariance matrices endowed with power metric (with Frobenius metric as a special case), Cholesky and log-Cholesky metrics, spherical data. References: Petersen, A., & Müller, H.-G. (2019) doi:10.1214/17-AOS1624.

Changes in 0.3.0

Changes:

Included implementations for Fréchet variance and Fréchet ANOVA <DOI:10.1093/biomet/asz052>.
Included implementations for Fréchet change-point detection <DOI:10.1214/19-AOS1930>.
Included methods for functional object data proposed in <DOI:10.1080/01621459.2021.1917416> and <DOI:10.1111/rssb.12337>.
Included implementations for Fréchet regression for spherical responses and correlations <DOI:10.1214/17-AOS1624>.
Included implementations for point process Fréchet regression <DOI:10.1109/TIT.2021.3126466>.
Included computation for Fréchet means with potentially unequal weights.

Minors:

Fixed bugs in Fréchet regression for distributions and covariances.

From NEWS in the release

Install

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

install.packages("frechet", 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("functionaldata/tFrechet")

Development version from functionaldata/tFrechet. 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-frechet

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-frechet

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-frechet

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: 3.4 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
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.3.0

READMEYes · 85 wordsVignettesNoNEWSYes · 33% structured · mentions 0.3.0Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 37includes a package overview page
Examples that run: 47%14 run in a plain check · 16 only when donttest examples are enabled (R CMD check --as-cran)
Exported functions with examples: 86%
Documented parameters: 90%
Return-value docs: 100%
Help pages citing references: 59%

How these are measured

Downloads

3.7K

CRAN downloads in the past year

Rank #11,510 · ~10/day · ~308/mo

Releases R versions

Daily download trend is not available in this view yet.

28930 days

94190 days

3.7K1 year

Compare downloads with other packages →

Also on87 r2u6 autocran71 c2d4u

How downloads are counted

Repository

functionaldata/tfrechet ↗Organization: functionaldata

14Stars

5Forks

3Open issues

1Open PRs

0Releases

59Commits

5Commit identities

59 commits · Last activity 2024-10-03 · The default branch showed an older version (0.2.0) than CRAN on 2026-10-21

Responsiveness

How these are sampled

PRs merged (all time): 77%
Median days to close, 50 most recently updated closed issues: not measured
Median days to close, 50 most recently updated closed PRs: 0

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/functionaldata/tfrechet on 2026-10-21.

Governance and community (1)

Issue templates

CRAN release process (1)

cran-comments.md

How this is detected·Detection ruleset v4 (2026-10-20)

Dependencies

Declared dependencies

13 external dependencies (excludes base and recommended)

Installing frechet adds 63 packages (34 with compiled code, 65 MB of source tarballs). Heaviest: stringi 11 MB, ggplot2 6.0 MB, data.table 5.7 MB.

Depends (0)

none

Imports (13)

bootcorrplot e1071 fdadensity fdapaceMatrixmethodspracma quadprog osqpstatstrustutils

LinkingTo (0)

none

Suggests (5)

Rcpp testthat igraph mpoly truncnorm

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

People & History

People (14)

Yaqing Chen

Author, Maintainer since 0.1.0 (2020)

Petersen Alexander

Author · added in 0.3.0

Satarupa Bhattacharjee

Author

Han Chen

Author · added in 0.3.0

Author

Author

Author

Author

Copyright holder, Thesis advisor, Author

Qixian Zhong

Author

Yidong Zhou

Author · added in 0.3.0

Su I Iao

Contributor · added in 0.3.0

Poorbita Kundu

Contributor · added in 0.3.0

Changbo Zhu

Contributor · added in 0.3.0

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
0.3.0Latest
record
2023-12-09 · current release · diff ↗ ·
added 24 exports
CovFIntegral, DenANOVA, DenCPD, DenFVar, GloCorReg, GloPointPrReg, GloSpheReg, LocCorReg, LocPointPrReg, LocSpheReg, NetANOVA, NetCPD, NetFIntegral, NetFVar, ObjCov, SpheGeoDist, SpheGeoGrad, SpheGeoHess, VarObj, WassFIntegral, expSphere, frameSphere, logSphere, pol2car
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
0.2.0
record
2020-12-16 · diff ↗ ·
added 2 exports
dist4cov, dist4den
0.1.0
record
2020-06-19
R
R 4.0.0 released · 2020-04-24

Package metadata

First published: 2020-06-19
Total releases: 3 / 6 yrs
License: BSD_3_clause + file LICENSE OSI
Download size: 91 KB

Appears in task views

Functional Data Analysis

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("frechet")

Format

Chen, Y., Alexander, P., Bhattacharjee, S., Chen, H., Dubey, P., Fan, J., Gajardo, A., Han, K., Iao, S. I., Kundu, P., Müller, H., Zhong, Q., Zhou, Y., & Zhu, C. (2023). frechet: Statistical Analysis for Random Objects and Non-Euclidean Data (Version 0.3.0) [Computer software]. https://doi.org/10.32614/CRAN.package.frechet

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 frechet version 0.3.0 [Data set]. HJJB, LLC. Data release v2026-10-25. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-25, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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