R Observatory: Metrics for iNEXT.4steps version 1.0.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

iNEXT.4steps

1.0.1Package record

Four-Step Biodiversity Analysis Based on 'iNEXT'

0packages depend

4.2Kdownloads / year

76.1%test coverage

13/13flavors OK

Overview

About

Maintained by Anne ChaoCRAN page ↗GitHub ↗Website ↗Issues ↗

Expands 'iNEXT' to include the estimation of sample completeness and evenness. The package provides simple functions to perform the following four-step biodiversity analysis: STEP 1: Assessment of sample completeness profiles. STEP 2a: Analysis of size-based rarefaction and extrapolation sampling curves to determine whether the asymptotic diversity can be accurately estimated. STEP 2b: Comparison of the observed and the estimated asymptotic diversity profiles. STEP 3: Analysis of non-asymptotic coverage-based rarefaction and extrapolation sampling curves. STEP 4: Assessment of evenness profiles. The analyses in STEPs 2a, 2b and STEP 3 are mainly based on the previous 'iNEXT' package. Refer to the 'iNEXT' package for details. This package is mainly focusing on the computation for STEPs 1 and 4. See Chao et al. (2020) doi:10.1111/1440-1703.12102 for statistical background.

Install

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

install.packages("iNEXT.4steps", 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("KaiHsiangHu/iNEXT.4steps")

Development version from KaiHsiangHu/iNEXT.4steps. 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-inext.4steps

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-iNEXT.4steps

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-iNEXT.4steps

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: 5.9 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 1.0.1

READMENoVignettesYes · 1 · dynamicNEWSYes · 67% structuredCitation fileYes · cites a publicationWebsiteYes

Help pages: 8includes a package overview page
Examples that run: 86%6 run in a plain check · 1 only when donttest examples are enabled (R CMD check --as-cran)
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 38%

Vignettes (1)

A Quick Introduction to iNEXT.4steps via Examples

How these are measured

Downloads

4.2K

CRAN downloads in the past year

Rank #8,851 · ~12/day · ~353/mo

Releases R versions

Daily download trend is not available in this view yet.

46630 days

1.1K90 days

4.2K1 year

Compare downloads with other packages →

Also on69 r2u7 autocran

How downloads are counted

Repository

kaihsianghu/inext.4steps ↗Account: KaiHsiangHuFork of AnneChao/iNEXT.4steps

0Stars

1Forks

0Open PRs

0Releases

191Commits

1Commit identities

191 commits · Last activity 2024-06-17

Responsiveness

not measured

Forks over time

2025-12-17 · 12026-07-07 · 1

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/kaihsianghu/inext.4steps on 2026-10-21.

Docs source (1)

README.Rmd

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

9 external dependencies (excludes base and recommended)

Installing iNEXT.4steps adds 79 packages (42 with compiled code, 71 MB of source tarballs). Heaviest: stringi 11 MB, ggplot2 6.0 MB, doBy 4.3 MB.

Depends (1)

R >= 4.0

Imports (7)

ggplot2 reshape2 dplyrstatsggpubr purrr iNEXT.3D

LinkingTo (0)

none

Suggests (3)

testthat knitr rmarkdown

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

Datasets

People & History

People (2)

Anne Chao

Author, Maintainer since 1.0.0 (2024)

KaiHsiang Hu

Contributor

Releases (2)

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
1.0.1Latest
record
2024-06-18 · current release · diff ↗
R
R 4.4.0 released · 2024-04-24
1.0.0
record
2024-04-10
R
R 4.3.0 released · 2023-04-21

Package metadata

First published: 2024-04-10
Total releases: 2 / 2 yrs
License: GPL (>= 3) OSI
Minimum R: ≥ 4.0
Bundled data: 28 KB / 2 files
Download size: 403 KB

Cite

Cite this package

Run in R for the authors' entry:

citation("iNEXT.4steps")

The package provides a citation file, so citation() returns the authors' own entry.

It points to 10.1111/1440-1703.12102.

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 iNEXT.4steps version 1.0.1 [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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