iNEXT.4steps

1.0.1

Four-Step Biodiversity Analysis Based on 'iNEXT'

0packages depend

4Kdownloads / year

76.1%test coverage

12/13checks pass

Overview

About

Maintained by Anne ChaoFirst published 2024-04-102 releasesCRAN page ↗GitHub ↗

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.

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).

Health

CRAN checks

1NOTE12OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-gcc

Slowest check: 6.4 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.07

76.1%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesYes · dynamicpkgdown siteNoNEWSYes · 67% structuredCode of conductNoContributing guideNo

Examples that run: 86%
Documented parameters: 100%
Return-value docs: 100%
References docs: 38%

Downloads

CRAN downloads in the past year

Rank #13,271 · ~11/day · ~336/mo

Releases R versions

Daily download trend is not available in this view yet.

27330 days

76890 days

4K1 year

Compare downloads with other packages →

Also on98 r2u

Repository

GitHub ↗ kaihsianghu/inext.4steps

0Stars

1Forks

0Open issues

0Open PRs

0Releases

191Commits

1Contributors

191 commits · Last activity 2025-06-09

Forks over time

2025-12-17 · 12026-07-07 · 1

Repository practices

Upstream repositoryBeta

2 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/kaihsianghu/inext.4steps on 2026-08-02.

Docs source (1)

README.Rmd

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

9 external dependencies (excludes base and recommended)

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.

Code & Tests

Datasets

People & History

People (2)

Maintainer (1)

Anne Chao

Author, Maintainer

Authors (1)

Anne Chao

Author, Maintainer

Contributors (1)

KaiHsiang Hu

Contributor

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
1.0.1Latest
2024-06-18 · current release · diff ↗
R
R 4.4.0 released · 2024-04-24
1.0.0
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
Installed size: not tracked yet
With dependencies: not tracked yet

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