irtoys

0.2.2

A Collection of Functions Related to Item Response Theory (IRT)

7packages depend

9.9Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Ivailo PartchevFirst published 2007-05-0811 releasesCRAN page ↗

A collection of functions useful in learning and practicing IRT, which can be combined into larger programs. Provides basic CTT analysis, a simple common interface to the estimation of item parameters in IRT models for binary responses with three different programs (ICL, BILOG-MG, and ltm), ability estimation (MLE, BME, EAP, WLE, plausible values), item and person fit statistics, scaling methods (MM, MS, Stocking-Lord, and the complete Hebaera method), and a rich array of parametric and non-parametric (kernel) plots. Estimates and plots Haberman's interaction model when all items are dichotomously scored.

Install

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

install.packages("irtoys", 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-irtoys

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-irtoys

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-irtoys

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

Health

CRAN checks

13OK

Slowest check: 3.1 min · r-devel-linux-x86_64-fedora-clang

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesYes · dynamicpkgdown siteNoNEWSYes · 33% structuredCode of conductNoContributing guideNo

Examples that run: 94%
Documented parameters: 100%
Return-value docs: 88%
References docs: 20%

Downloads

9.9K

CRAN downloads in the past year

Rank #4,725 · ~27/day · ~826/mo

Releases R versions

Daily download trend is not available in this view yet.

55630 days

1.9K90 days

9.9K1 year

Compare downloads with other packages →

Also on486 r2u27 autocran80 c2d4u

Dependencies

Declared dependencies

4 external dependencies (excludes base and recommended)

Depends (2)

sm ltm

Imports (0)

none

LinkingTo (0)

none

Suggests (3)

MASSknitr rmarkdown

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

7direct

1indirect

subscore PerFit PsyControl irtGUI shinyIRT PLmixed catIrt

Code & Tests

People & History

People (3)

Maintainer (1)

Ivailo Partchev

Author, Maintainer

Authors (2)

Ivailo Partchev

Author, Maintainer

Gunter Maris

Author · added in 0.2.1

Contributors (1)

Tamaki Hattori

Contributor · added in 0.2.1

Package Timeline

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

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
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R 4.3.0 released · 2023-04-21
0.2.2Latest
2022-05-12 · current release · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
0.2.1
2017-12-15 · diff ↗
R
R 3.4.0 released · 2017-04-21
0.2.0
2016-10-10 · diff ↗
R
R 3.3.0 released · 2016-05-03
R
R 3.2.0 released · 2015-04-16
R
R 3.1.0 released · 2014-04-10

Show 20 earlier events

0.1.7
2014-01-23 · diff ↗
R
R 3.0.0 released · 2013-04-03
0.1.6
2012-09-26 · diff ↗
0.1.5
2012-07-01 · diff ↗
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R 2.15.0 released · 2012-03-30
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R 2.14.0 released · 2011-10-31
0.1.4
2011-06-23 · diff ↗
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R 2.13.0 released · 2011-04-13
0.1.3
2010-11-06 · 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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R 2.10.0 released · 2009-10-26
0.1.2
2009-10-12 · diff ↗
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R 2.9.0 released · 2009-04-17
R
R 2.8.0 released · 2008-10-20
0.1.1
2008-06-25 · diff ↗
R
R 2.7.0 released · 2008-04-22
R
R 2.6.0 released · 2007-10-03
0.1.0
2007-05-08
R
R 2.5.0 released · 2007-04-24

Package metadata

First published: 2007-05-08
Total releases: 11 / 19 yrs
License: GPL (>= 2) OSI
Bundled data: 12 KB / 6 files
Download size: 611 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Psychometric Models and Methods

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