R Observatory: Metrics for lordif version 0.4.2

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

lordif

0.4.2Package record

Logistic Ordinal Regression Differential Item Functioning using IRT

1packages depend

11.9Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Seung W. ChoiCRAN page ↗

Performs analysis of Differential Item Functioning (DIF) for dichotomous and polytomous items using an iterative hybrid of ordinal logistic regression and item response theory (IRT) according to Choi, Gibbons, and Crane (2011) doi:10.18637/jss.v039.i08.

Install

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

install.packages("lordif", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

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-lordif

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-lordif

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-lordif

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: 3.5 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-06-09
ERROR12 OK, 1 ERROR2026-06-08
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.4.2

READMEYes · 325 wordsVignettesNoNEWSNoCitation fileYes · cites a publicationWebsitenot declared in DESCRIPTION

Cites a JSS article

Help pages: 21includes a package overview page
Examples that run: 24%5 run in a plain check · 16 never run
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 71%

How these are measured

Downloads

11.9K

CRAN downloads in the past year

Rank #3,749 · ~33/day · ~991/mo

Releases R versions

Daily download trend is not available in this view yet.

1.2K30 days

2.6K90 days

11.9K1 year

Compare downloads with other packages →

Also on89 r2u3 autocran154 c2d4u

How downloads are counted

Dependencies

Declared dependencies

4 external dependencies (excludes base and recommended)

Installing lordif adds 115 packages (55 with compiled code, 88 MB of source tarballs). Heaviest: stringi 11 MB, TH.data 8.2 MB, ggplot2 6.0 MB.

Depends (5)

R >= 3.6.0mirt rms doSNOW foreach

Imports (1)

stats4

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

Imports 1

Depends, Imports or LinkingTo, most downloaded first

TestAnaAPP

How these are counted

Code & Tests

Datasets

People & History

People (3)

Seung W. Choi

Author, Maintainer since 0.1-1 (2009)

Paul K. Crane

Author

Laura E. Gibbons

Author

Listed in earlier versions (4)

Show 4 peopleHide 4 people

with contributions from Laura E. Gibbons

no longer listed · 2.9.0 to 0.3-3

Choi

no longer listed · 0.4.2

Crane

no longer listed · 0.4.2

Gibbons

no longer listed · 0.4.2

Releases (23)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
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R 4.5.0 released · 2025-04-11
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R 4.4.0 released · 2024-04-24
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R 4.3.0 released · 2023-04-21
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R 4.2.0 released · 2022-04-22
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R 4.1.0 released · 2021-05-18
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R 4.0.0 released · 2020-04-24
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R 3.6.0 released · 2019-04-26
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R 3.5.0 released · 2018-04-23
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R 3.4.0 released · 2017-04-21
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R 3.3.0 released · 2016-05-03
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R 3.2.0 released · 2015-04-16
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R 3.1.0 released · 2014-04-10
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R 3.0.0 released · 2013-04-03
2.15.1Latest
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2012-04-04 · current release · diff ↗
R
R 2.15.0 released · 2012-03-30

Show 29 earlier eventsHide 29 earlier events

2.14.1
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2011-11-16 · diff ↗ ·
added 1 export
permute
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R 2.14.0 released · 2011-10-31
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R 2.13.0 released · 2011-04-13
2.13.0
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2011-02-28 · diff ↗
2.12.1
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2010-11-29 · diff ↗
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R 2.12.0 released · 2010-10-15
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R 2.11.0 released · 2010-04-22
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2009-11-17 · diff ↗
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R 2.10.0 released · 2009-10-26
2.10.0
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2009-10-13 · diff ↗
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R 2.9.0 released · 2009-04-17
2.9.0
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2009-03-08 · diff ↗ ·
added 16 exports
lordif, montecarlo, plotDIF, plotMC, calcprob, calctheta, collapse, equate, extract, getcutoff, probgrm, recode, rundif, runolr, separate, tcc
0.4.2
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2025-01-09 · diff ↗
0.3-3
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2016-03-03 · diff ↗
0.3-2
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2015-09-18 · diff ↗ ·
added 2 exports
probgpcm, DFIT
0.2-2
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2012-04-05 · diff ↗
0.2-1
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2011-11-19 · diff ↗
0.1-10
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2011-03-01 · diff ↗
0.1-9
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2010-11-30 · diff ↗
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2010-10-05 · diff ↗
0.1-6
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2010-08-20 · diff ↗
0.1-5
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2010-07-09 · diff ↗ ·
removed 2 exports
plotDIF, plotMC

added 2 exports
plot.lordif, plot.lordif.MC
0.1-4
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2009-11-18 · diff ↗
0.1-3
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2009-11-05 · diff ↗
0.1-2
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2009-10-14 · diff ↗
0.1-1
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2009-07-26
R
R 2.8.0 released · 2008-10-20

Package metadata

First published: 2009-03-08
Total releases: 23 / 17 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.6.0
Bundled data: 9.0 KB / 1 file
Download size: 36 KB

Appears in task views

Psychometric Models and Methods

Cite

Cite this package

Run in R for the authors' entry:

citation("lordif")

The package provides a citation file, so citation() returns the authors' own entry.

It points to 10.18637/jss.v039.i08.

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 lordif version 0.4.2 [Data set]. HJJB, LLC. Data release v2026-10-25. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-25, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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