R Observatory: Metrics for logcumulant version 0.1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

logcumulant

0.1.0

Goodness-of-Fit Tests and Diagrams Based on Mellin Log-Cumulants

0packages depend

558downloads / year

33.9%test coverage

13/13checks pass

Overview

About

Maintained by Raydonal OspinaFirst published 2026-06-121 releasesCRAN page ↗GitHub ↗

A family of three complementary goodness-of-fit tests based on an adaptation of Hotelling's T-squared statistic applied to vectors of sample log-cumulants (Mellin statistics) for positive-support reliability data. The package provides the asymptotic chi-squared reference and parametric bootstrap p-values for reliable finite-sample inference, covering the Weibull, Frechet, Gamma, Inverse-Gamma, Log-Normal, and Log-Logistic families. It also provides three diagnostic diagrams (log-cumulant, kurtosis-skewness, and coefficient-of-variation) with bootstrap concentration ellipses, in the spirit of moment-ratio diagrams. Methods are described in Santos, Ospina, Espinheira and Oliveira (2025).

Install

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

install.packages("logcumulant", 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("raydonal/logcumulant")

Development version from raydonal/logcumulant. 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-logcumulant

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-logcumulant

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-logcumulant

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

Health

CRAN checks

13OK

Slowest check: 4.6 min · r-devel-windows-x86_64

Code health

Yes

Tests · ratio 0.05

33.9%

Coverage · measured lines

100%

Documentation · exports

8

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
OK2026-06-13
6 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 326 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 67% structuredCode of conductNoContributing guideNo

Examples that run: 90%
Documented parameters: 92%
Return-value docs: 100%
References docs: 0%

Downloads

558

CRAN downloads in the past year

Rank #20,451 · ~2/day · ~47/mo

Releases R versions

Daily download trend is not available in this view yet.

15530 days

55890 days

5581 year

Compare downloads with other packages →

Also on47 r2u5 autocran

Repository

GitHub ↗ raydonal/logcumulant

0Stars

0Forks

0Open issues

0Open PRs

0Releases

Last activity 2026-07-02

Repository practices

Upstream repositoryBeta

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

Checks run against github.com/raydonal/logcumulant on 2026-08-23.

Continuous integration (1)

GitHub Actions

CRAN release process (1)

cran-comments.md

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

Dependencies

Declared dependencies

12 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.0

Imports (8)

RcppMASSVGAM actuar numDeriv goftest ggplot2 gridExtra

LinkingTo (2)

Rcpp RcppArmadillo

Suggests (3)

knitr rmarkdown testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Datasets

People & History

People (1)

Maintainer (1)

Raydonal Ospina

Author, Maintainer

Authors (1)

Raydonal Ospina

Author, Maintainer

Package Timeline

1 release. R releases are shown for context.

0.1.0Latest
2026-06-12 · current release
R
R 4.6.0 released · 2026-04-24

Package metadata

First published: 2026-06-12
Total releases: 1 / 1 yrs
License: GPL-3 OSI
Minimum R: ≥ 4.0
Bundled data: 1.6 KB / 1 file
Download size: 500 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("logcumulant")

Format

Ospina, R. (2026). logcumulant: Goodness-of-Fit Tests and Diagrams Based on Mellin Log-Cumulants (Version 0.1.0) [Computer software]. https://doi.org/10.32614/CRAN.package.logcumulant

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 logcumulant version 0.1.0 [Data set]. HJJB, LLC. Data release v2026-08-24. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-24, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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