dcurver

0.9.3

Utility Functions for Davidian Curves

2packages depend

103.3Kdownloads / year

7.6%test coverage

13/13checks pass

Overview

About

Maintained by Ozan ÖğredenFirst published 2018-04-054 releasesCRAN page ↗GitHub ↗

A Davidian curve defines a seminonparametric density, whose shape and flexibility can be tuned by easy to estimate parameters. Since a special case of a Davidian curve is the standard normal density, Davidian curves can be used for relaxing normality assumption in statistical applications (Zhang & Davidian, 2001) doi:10.1111/j.0006-341X.2001.00795.x. This package provides the density function, the gradient of the loglikelihood and a random generator for Davidian curves.

Install

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

install.packages("dcurver", 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("oguzhanogreden/dcurver")

Development version from oguzhanogreden/dcurver. 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-dcurver

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

# 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-dcurver

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

Health

CRAN checks

13OK

Slowest check: 2.6 min · r-oldrel-macos-x86_64

Code health

Yes

Tests · ratio 0.43

7.6%

Coverage · measured lines

Dependencies · direct

Check history

OK2026-04-22
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
13 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 207 wordsVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: not tracked
Return-value docs: not tracked
References docs: 33%

Downloads

103.3K

CRAN downloads in the past year

Rank #1,327 · ~283/day · ~8.6K/mo

Releases R versions

Daily download trend is not available in this view yet.

6.5K30 days

24.8K90 days

103.3K1 year

Compare downloads with other packages →

Also on956 r2u10 autocran5.8K conda_forge151 c2d4u

Repository

GitHub ↗ oguzhanogreden/dcurver

0Stars

1Forks

0Open issues

0Open PRs

1Releases

41Commits

2Contributors

41 commits · Last activity 2025-10-24

Forks over time

2025-09-19 · 12026-07-07 · 1

Repository practices

Upstream repositoryBeta

3 development-tooling and community-health practices detected across 3 families in the upstream repository

Checks run against github.com/oguzhanogreden/dcurver on 2026-07-26.

Continuous integration (1)

GitHub Actions

CRAN release process (1)

cran-comments.md

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

4 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (1)

Rcpp

LinkingTo (2)

Rcpp RcppArmadillo

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

2direct

48indirect

IRTest mirt

Code & Tests

People & History

People (1)

Maintainer (1)

Ozan Öğreden

Author, Maintainer

Authors (1)

Ozan Öğreden

Author, Maintainer

Listed in earlier versions (1)

Oğuzhan Öğreden

no longer listed · 0.9.0 to 0.9.2

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
0.9.3Latest
2025-10-24 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
0.9.2
2020-11-04 · diff ↗
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
0.9.1
2018-04-23 · diff ↗
R
R 3.5.0 released · 2018-04-23
0.9.0
2018-04-05
R
R 3.4.0 released · 2017-04-21

Package metadata

First published: 2018-04-05
Total releases: 4 / 8 yrs
License: GPL-3 OSI
Download size: 7.2 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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