R Observatory: Metrics for iarm version 0.4.3

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

iarm

0.4.3Package record

Item Analysis in Rasch Models

0packages dependsuggested by 1

4.1Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Marianne MuellerCRAN page ↗

Tools to assess model fit and identify misfitting items for Rasch models (RM) and partial credit models (PCM). Included are item fit statistics, item characteristic curves, item-restscore association, conditional likelihood ratio tests, assessment of measurement error, estimates of the reliability and test targeting as described in Christensen et al. (Eds.) (2013, ISBN:978-1-84821-222-0).

Changes in 0.4.3

Improved MLE and WLE estimation in person_estimate for situations with unequal numbers of item response categories.
fixed a bug in several functions dealing with unequal numbers of item response categories.

From NEWS.md in the release

Install

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

install.packages("iarm", 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-iarm

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-iarm

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-iarm

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: 2.9 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 0.4.3

READMENoVignettesNoNEWSYes · 100% structured · mentions 0.4.3Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 18includes a package overview page
Examples that run: 83%10 run in a plain check · 2 never run
Exported functions with examples: 77%
Documented parameters: 94%
Return-value docs: 92%
Help pages citing references: 61%

How these are measured

Downloads

4.1K

CRAN downloads in the past year

Rank #8,418 · ~11/day · ~343/mo

Releases R versions

Daily download trend is not available in this view yet.

46230 days

1.1K90 days

4.1K1 year

Compare downloads with other packages →

Also on93 r2u5 autocran84 c2d4u

How downloads are counted

Dependencies

Declared dependencies

6 external dependencies (excludes base and recommended)

Installing iarm adds 97 packages (48 with compiled code, 87 MB of source tarballs). Heaviest: stringi 11 MB, ggplot2 6.0 MB, data.table 5.7 MB.

Depends (3)

R >= 3.5.0eRm ggplot2

Imports (6)

gridExtra Hmisc psychotoolsstatsutilsvcdExtra

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Suggested by 1

Suggests, most downloaded first

easyRasch2

How these are counted

Code & Tests

Datasets

People & History

People (2)

Marianne Mueller

Author, Maintainer since 0.1.2 (2019)

Pedro Henrique Ribeiro Santiago

Contributor · added in 0.4.1

Releases (6)

Pick two releases to compare their code metrics.

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
R
R 4.3.0 released · 2023-04-21
0.4.3Latest
record
2022-08-27 · current release · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
0.4.2
record
2020-09-12 · diff ↗
R
R 4.0.0 released · 2020-04-24
0.4.1
record
2020-04-19 · diff ↗ ·
added 1 export
ICCplot
0.3.0
record
2019-12-04 · diff ↗
0.2.0
record
2019-05-03 · diff ↗ ·
added 2 exports
partgam_DIF, partgam_LD
R
R 3.6.0 released · 2019-04-26
0.1.2
record
2019-03-06
R
R 3.5.0 released · 2018-04-23

Package metadata

First published: 2019-03-06
Total releases: 6 / 7 yrs
License: GPL-2 OSI
Minimum R: ≥ 3.5.0
Bundled data: 9.3 KB / 2 files
Download size: 37 KB

Appears in task views

Psychometric Models and Methods

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("iarm")

Format

Mueller, M., & Ribeiro Santiago, P. H. (2022). iarm: Item Analysis in Rasch Models (Version 0.4.3) [Computer software]. https://doi.org/10.32614/CRAN.package.iarm

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

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 iarm version 0.4.3 [Data set]. HJJB, LLC. Data release v2026-10-23. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-23, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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