R Observatory: Metrics for ecan version 0.3.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

ecan

0.3.0Package record

Ecological Analysis and Visualization

0packages depend

7.2Kdownloads / year

93.1%test coverage

13/13flavors OK

Overview

About

Maintained by Toshikazu MatsumuraCRAN page ↗GitHub ↗Website ↗Issues ↗

Support ecological analyses such as ordination and clustering. Contains consistent and easy wrapper functions of 'stat', 'vegan', and 'labdsv' packages, and visualisation functions of ordination and clustering.

Changes in 0.3.0

2026-10-05
Added twinspan(), a native R implementation of TWINSPAN (Hill 1979) and modified TWINSPAN (Roleček et al. 2009). It is written in plain R from the published description of the algorithm, and is not a port of the original FORTRAN program. The known differences from the original are listed in ?twinspan, which also points to the twinspan package of Oksanen for those who need the results of the original program.
polish = "hill" (the default) follows the steps of Hill's program, and reproduces it exactly on the dune, sipoo, varespec, mite, BCI and pyrifos data of 'vegan': the same groups of stands and of species, with the same numbers, divisions and eigenvalues, and on twenty randomly generated data sets. polish = "ecan" keeps the earlier way, written from the published description alone.

Show all changes in 0.3.0Hide the rest of the changes in 0.3.0

Rare pseudospecies are downweighted in the ordination as the original does, which can be turned off with downweight = FALSE.
Helpers: pseudospecies(), tw_ra(), tw_downweight(), tw_inertia(), tw_preference(), tw_hill_const() and tw_two_way().
stats::as.hclust() converts the result so that cls_color(), cls_add_group() and ggdendro::ggdendrogram() can be used.
Bug fixes
shdi() gave NaN for h when an abundance was zero. A zero is now read as an absent species, as s already did.
ind_val() did not order its result at all. The species of a group are now given in decreasing order of ind.val.
cls_add_group() turned every label into NA when a single stand was missing from df. Only the labels of the missing stands are NA now: pad2longest() no longer lets an NA decide the width.
dist2df() dropped a distance of zero between two different plots. It now drops the diagonal only.
ordination() raised an unrelated error for an unknown o_method. It now names the method and lists the valid ones.
ind_val() numbered the groups in the order in which they appeared in df. They now follow the levels of a factor, or the order of sort() otherwise.
ord_add_group() keeps the column named by group, even when that column is not one-to-multi to indiv.
cols_one2multi() and select_one2multi() spell their argument include_self. The misspelt inculde_self is still accepted.
read_biss() joins the tables quietly, and its example reads a file bundled in inst/extdata instead of a file on GitHub.
twinspan(polish = "hill") takes the downweighting limits from tw_hill_const() instead of the defaults of tw_downweight(). The values are the same, so the results do not change.

From NEWS.md in the release

Install

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

install.packages("ecan", 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("matutosi/ecan")

Development version from matutosi/ecan. 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-ecan

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-ecan

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-ecan

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: 1.7 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-20
ERROR12 OK, 1 ERROR2026-08-18
OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-05-21

Show 2 earlier changesHide 2 earlier changes

ERROR12 OK, 1 ERROR2026-05-20
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.3.0

READMEYes · 194 wordsVignettesYes · 1 · dynamicNEWSYes · 100% structured · mentions 0.3.0Citation fileNoWebsiteYes · pkgdown

Help pages: 21 (1 internal)
Examples that run: 37%7 run in a plain check · 12 only when donttest examples are enabled (R CMD check --as-cran)
Exported functions with examples: 95%
Documented parameters: 77%
Return-value docs: 100%
Help pages citing references: 5%

Vignettes (1)

TWINSPAN with ecan HTML

How these are measured

Downloads

7.2K

CRAN downloads in the past year

Rank #7,955 · ~20/day · ~603/mo

Releases R versions

Daily download trend is not available in this view yet.

44130 days

1.1K90 days

7.2K1 year

Compare downloads with other packages →

Also on82 r2u2 autocran

How downloads are counted

Repository

matutosi/ecan ↗Account: matutosi

0Stars

0Forks

0Open issues

0Open PRs

0Releases

Last activity 2026-10-05 · Default branch at 0.3.0.9000, ahead of CRAN 0.3.0 (checked 2026-10-18)

Responsiveness

not measured

How these are measured

PracticesBeta

8 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/matutosi/ecan on 2026-10-18.

Continuous integration (1)

GitHub Actions

Docs source (4)

README.Rmdpkgdown

GitHub Pages site last deployed 2026-10-05 · The repository has a site deploy workflow

pkgdown site last built 2026-10-05

CRAN release process (2)

cran-comments.mdCRAN-SUBMISSION

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v3 (2026-09-26)

AI coding toolsBeta

This repository shows signs of AI coding tools.

Claude Codefirst seen 2026-08-17
Seen in the repository: .claude
Named in .Rbuildignore: .claude
Commits: at least 28 crediting it in the message

Models named in its commits

Claude Opus 519 commits · Aug to Sep 2026
Claude Opus 5.59 commits · Sep to Oct 2026

Counts are commits, not lines of code. Commits by a tool's accounts count once across all of its accounts. Commits crediting it are the largest count among its credit lines, a minimum.How this is detected·Detection ruleset v4 (updated 2026-09-27)

Dependencies

Declared dependencies

16 external dependencies (excludes base and recommended)

Installing ecan adds 38 packages (20 with compiled code, 41 MB of source tarballs). Heaviest: stringi 11 MB, ggplot2 6.0 MB, dendextend 4.5 MB.

Depends (1)

R >= 3.5.0

Imports (14)

MASSclusterdendextend dplyr ggplot2 jsonlite labdsv magrittr purrr rlang stringr tibble tidyr vegan

LinkingTo (0)

none

Suggests (4)

ggdendro knitr rmarkdown testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

People & History

People (1)

Toshikazu Matsumura

Author, Maintainer since 0.2.0 (2023)

Releases (4)

Pick two releases to compare their code metrics.

0.3.0Latest
record
2026-10-05 · current release · diff ↗ ·
added 9 exports
pseudospecies, tw_downweight, tw_hill_const, tw_inertia, tw_preference, tw_ra, tw_species_data, tw_two_way, twinspan
0.2.2
record
2026-08-22 · diff ↗
R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
unarchivedReturned to CRAN
2023-07-07
0.2.1
record
2023-07-07 · diff ↗
archivedRemoved from CRAN
2023-05-08
requires archived package 'dave'
R
R 4.3.0 released · 2023-04-21
0.2.0
record
2023-03-23
R
R 4.2.0 released · 2022-04-22

Package metadata

First published: 2023-03-23
Total releases: 4 / 3 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 3.5.0
Download size: 113 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("ecan")

Format

Matsumura, T. (2026). ecan: Ecological Analysis and Visualization (Version 0.3.0) [Computer software]. https://doi.org/10.32614/CRAN.package.ecan

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 ecan version 0.3.0 [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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