gkwdist

1.1.4

Generalized Kumaraswamy Distribution Family

1packages depend

4.2Kdownloads / year

75.3%test coverage

13/13checks pass

Overview

About

Maintained by José Evandeilton LopesFirst published 2025-11-135 releasesCRAN page ↗GitHub ↗

Implements the five-parameter Generalized Kumaraswamy ('gkw') distribution proposed by 'Carrasco, Ferrari and Cordeiro (2010)' doi:10.48550/arXiv.1004.0911 and its seven nested sub-families for modeling bounded continuous data on the unit interval (0,1). The 'gkw' distribution extends the Kumaraswamy distribution described by Jones (2009) doi:10.1016/j.stamet.2008.04.001. Provides density, distribution, quantile, and random generation functions, along with analytical log-likelihood, gradient, and Hessian functions implemented in 'C++' via 'RcppArmadillo' for maximum computational efficiency. Suitable for modeling proportions, rates, percentages, and indices exhibiting complex features such as asymmetry, or heavy tails and other shapes not adequately captured by standard distributions like simple Beta or Kumaraswamy.

Install

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

install.packages("gkwdist", 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("evandeilton/gkwdist")

Development version from evandeilton/gkwdist. 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-gkwdist

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-gkwdist

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-gkwdist

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

Health

CRAN checks

13OK

Slowest check: 6.0 min · r-devel-linux-x86_64-fedora-gcc

Code health

Yes

Tests · ratio 0.16

75.3%

Coverage · measured lines

98%

Documentation · exports

Yes

Vignettes

Yes

README

Dependencies · direct

Check history

OK2026-06-04
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-05-22
11 OK · 0 NOTE · 0 WARNING · 2 ERROR · 0 FAILURE
OK2026-04-25
12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-04-22
12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
11 OK · 2 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE

Show 1 earlier snapshots

NOTE2026-03-10
12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Downloads

4.2K

CRAN downloads in the past year

Rank #5,975 · ~12/day · ~353/mo

Releases R versions

Daily download trend is not available in this view yet.

47730 days

1.7K90 days

4.2K1 year

Compare downloads with other packages →

Also on323 r2u30 autocran

Repository

GitHub ↗ evandeilton/gkwdist

1Stars

0Forks

0Open issues

0Open PRs

5Releases

79Commits

1Contributors

cppdistributiongkwrrcpparmadillounit-interval

79 commits · Last activity 2026-05-27 · 0% stars, 30d

Stars over time

2026-06-13 · 12026-07-07 · 1

Dependencies

Declared dependencies

9 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (4)

Rcpp RcppArmadillo magrittr numDeriv

LinkingTo (2)

Rcpp RcppArmadillo

Suggests (3)

knitr rmarkdown testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

gkwreg

Code & Tests

Code Composition

R 15,534 (40%)Rd 12,310 (32%)C++ 8,255 (21%)Vignettes 1,796 (5%)C 940 (2%)

Code characteristics

Cyclomatic complexity: 1.0 median / 18 max
Test cases: 129 / 0.16 per code line
Documented parameters: 100%

Test coverage

Line coverage

75%

Expression

73.5%

Tests / Examples

75.3% / 0% ex

Functions

226 50 exported

Complexity

5.1 avg / 18 max

Call network

226 nodes / 214 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

226 functions

Function	Cyclo	Coverage
dbeta_ exp	9	57%
qgkw exp	18	68%
qbkw exp	16	68%
qkkw exp	16	68%
qekw exp	14	68%
qmc exp	14	68%

People & History

People (1)

Maintainer (1)

José Evandeilton Lopes

Author, Maintainer

Authors (1)

José Evandeilton Lopes

Author, Maintainer

Package Timeline

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

1.1.4Latest
2026-05-28 · current release · diff ↗
1.1.3
2026-05-21 · diff ↗
R
R 4.6.0 released · 2026-04-24
1.1.2
2026-01-08 · diff ↗
1.1.1
2025-11-27 · diff ↗
1.0.10
2025-11-13
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2025-11-13
Total releases: 5 / 1 yrs
License: MIT + file LICENSE OSI
Download size: 860 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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