R Observatory: Metrics for inflection version 1.3.7

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

inflection

1.3.7Package record

Finds the Inflection Point of a Curve

5packages dependsuggested by 2

25.4Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Demetris T. ChristopoulosCRAN 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 .

Changes in 1.3.7

1. Fix minor issue of Author in DECRIPTION file

From NEWS.md in the release

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. 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-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). 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: 2.9 min · r-release-macos-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 1.3.7

READMEYes · 620 wordsVignettesYes · 3 · dynamicNEWSYes · 33% structured · mentions 1.3.7Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 23includes a package overview page
Examples that run: 96%22 run in a plain check · 1 hold no code
Exported functions with examples: 100%
Documented parameters: not tracked
Return-value docs: not tracked
Help pages citing references: 96%

Vignettes (3)

How these are measured

Downloads

25.4K

CRAN downloads in the past year

Rank #2,970 · ~70/day · ~2.1K/mo

Releases R versions

Daily download trend is not available in this view yet.

2.1K30 days

4.6K90 days

25.4K1 year

Compare downloads with other packages →

Also on234 r2u5 autocran285 conda_forge85 c2d4u

How downloads are counted

Dependencies

Declared dependencies

2 external dependencies (excludes base and recommended)

Installing inflection adds no packages beyond those that come with R.

Depends (0)

none

Imports (4)

parallelstatsgraphicsgrDevices

LinkingTo (0)

none

Suggests (2)

knitr rmarkdown

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

5direct

1indirect

Depends 2 · Imports 3

Suggested by 2

Depends, Imports or LinkingTo, most downloaded first

skedastic archetypal RootsExtremaInflections BDAlgo matrixcut

Suggests, most downloaded first

RRphylo RRmorph

How these are counted

Code & Tests

Datasets

People & History

People (1)

Demetris T. Christopoulos

Author, Maintainer since 1.0 (2013)

Releases (7)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
1.3.7Latest
record
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
record
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
record
2019-06-28 · diff ↗
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
1.3
record
2017-05-13 · diff ↗
R
R 3.4.0 released · 2017-04-21
1.2
record
2016-06-10 · diff ↗
R
R 3.3.0 released · 2016-05-03

Show 6 earlier eventsHide 6 earlier events

R
R 3.2.0 released · 2015-04-16
R
R 3.1.0 released · 2014-04-10
1.1
record
2013-04-04 · diff ↗
R
R 3.0.0 released · 2013-04-03
1.0
record
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

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 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 inflection version 1.3.7 [Data set]. HJJB, LLC. Data release v2026-10-21. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-21, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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