R Observatory: Metrics for features version 2025.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

features

2025.1Package record

Feature Extraction for Discretely-Sampled Functional Data

0packages depend

7.6Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Ravi VaradhanCRAN page ↗

Discretely-sampled function is first smoothed. Features of the smoothed function are then extracted. Some of the key features include mean value, first and second derivatives, critical points (i.e. local maxima and minima), curvature of cunction at critical points, wiggliness of the function, noise in data, and outliers in data.

Install

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

install.packages("features", 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-features

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-features

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-features

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: 51 s · r-devel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 2025.1

READMENoVignettesNoNEWSYes · 0% structuredCitation fileNoWebsitenot declared in DESCRIPTION

Help pages: 3
Examples that run: 100%3 run in a plain check
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 0%

Also includes 1 demo script (run with demo())

How these are measured

Downloads

7.6K

CRAN downloads in the past year

Rank #6,928 · ~21/day · ~633/mo

Releases R versions

Daily download trend is not available in this view yet.

39830 days

1.3K90 days

7.6K1 year

Compare downloads with other packages →

Also on89 r2u6 autocran135 c2d4u

How downloads are counted

Dependencies

Declared dependencies

1 external dependency (excludes base and recommended)

Installing features adds 2 packages (1 with compiled code, 227 KB of source tarballs). Heaviest: sfsmisc 187 KB, lokern 40 KB.

Depends (1)

lokern

Imports (0)

none

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

People & History

People (4)

Ravi Varadhan

Author, Maintainer since 2011.8-1 (2011)

AT&T Reserach Labs.

Author

MKG Subramaniam

Author

Johns Hopkins University

Author

Listed in earlier versions (2)

Labs.

no longer listed · 2025.1

University

no longer listed · 2025.1

Releases (4)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
2025.1Latest
record
2025-04-14 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
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
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03
2015.12-1
record
2015-12-02 · diff ↗
R
R 3.2.0 released · 2015-04-16
R
R 3.1.0 released · 2014-04-10
R
R 3.0.0 released · 2013-04-03

Show 5 earlier eventsHide 5 earlier events

R
R 2.15.0 released · 2012-03-30
R
R 2.14.0 released · 2011-10-31
2011.8-2
record
2011-08-17 · diff ↗ ·
added 2 exports
fget, plot.features
2011.8-1
record
2011-08-13
R
R 2.13.0 released · 2011-04-13

Package metadata

First published: 2011-08-13
Total releases: 4 / 15 yrs
License: GPL (>= 2) OSI
Download size: 4.8 KB

Appears in task views

Numerical Mathematics

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("features")

Format

Varadhan, R., Labs., A. R., Subramaniam, M., & University, J. H. (2025). features: Feature Extraction for Discretely-Sampled Functional Data (Version 2025.1) [Computer software]. https://doi.org/10.32614/CRAN.package.features

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 features version 2025.1 [Data set]. HJJB, LLC. Data release v2026-10-26. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-26, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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