R Observatory: Metrics for inflection version 1.3.7

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

inflection

1.3.7

Finds the Inflection Point of a Curve

7packages depend

29.4Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Demetris T. ChristopoulosFirst published 2013-03-207 releasesCRAN page ↗

Implementation of methods Extremum Surface Estimator (ESE) and Extremum Distance Estimator (EDE) to identify the inflection point of a curve . Christopoulos, DT (2014) doi:10.48550/arXiv.1206.5478 . Christopoulos, DT (2016) https://demovtu.veltech.edu.in/wp-content/uploads/2016/04/Paper-04-2016.pdf . Christopoulos, DT (2016) doi:10.2139/ssrn.3043076 .

Install

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

install.packages("inflection", 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-inflection

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-inflection

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-inflection

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

Health

CRAN checks

13OK

Slowest check: 2.9 min · r-release-macos-x86_64

Code health

None

Tests · ratio 0.00

not tracked

Coverage

4

Dependencies · direct

Check history

OK2026-08-05
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 620 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 33% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: not tracked
Return-value docs: not tracked
References docs: 96%

Downloads

29.4K

CRAN downloads in the past year

Rank #3,084 · ~81/day · ~2.4K/mo

Releases R versions

Daily download trend is not available in this view yet.

1K30 days

4.1K90 days

29.4K1 year

Compare downloads with other packages →

Also on176 r2u18 autocran208 conda_forge53 c2d4u

Dependencies

Declared dependencies

2 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (4)

parallelstatsgraphicsgrDevices

LinkingTo (0)

none

Suggests (2)

knitr rmarkdown

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

7direct

1indirect

BDAlgo RootsExtremaInflections archetypal matrixcut skedastic RRmorph RRphylo

Code & Tests

Datasets

People & History

People (1)

Maintainer (1)

Demetris T. Christopoulos

Author, Maintainer

Authors (1)

Demetris T. Christopoulos

Author, Maintainer

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
1.3.7Latest
2025-07-17 · 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
1.3.6
2022-06-15 · diff ↗
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
1.3.5
2019-06-28 · diff ↗
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
1.3
2017-05-13 · diff ↗
R
R 3.4.0 released · 2017-04-21
1.2
2016-06-10 · diff ↗
R
R 3.3.0 released · 2016-05-03

Show 6 earlier events

R
R 3.2.0 released · 2015-04-16
R
R 3.1.0 released · 2014-04-10
1.1
2013-04-04 · diff ↗
R
R 3.0.0 released · 2013-04-03
1.0
2013-03-20
R
R 2.15.0 released · 2012-03-30

Package metadata

First published: 2013-03-20
Total releases: 7 / 13 yrs
License: GPL (>= 2) OSI
Bundled data: 59 KB / 10 files
Download size: 215 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("inflection")

Format

Christopoulos, D. T. (2025). inflection: Finds the Inflection Point of a Curve (Version 1.3.7) [Computer software]. https://doi.org/10.32614/CRAN.package.inflection

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

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 inflection version 1.3.7 [Data set]. HJJB, LLC. Data release v2026-08-18. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-18, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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