R Observatory: Metrics for eRm version 1.0-10

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

eRm

1.0-10Package record

Extended Rasch Modeling

5packages dependsuggested by 11

30.5Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Patrick MairCRAN page ↗

Fits Rasch models (RM), linear logistic test models (LLTM), rating scale model (RSM), linear rating scale models (LRSM), partial credit models (PCM), and linear partial credit models (LPCM). Missing values are allowed in the data matrix. Additional features are the ML estimation of the person parameters, Andersen's LR-test, item-specific Wald test, Martin-Loef-Test, nonparametric Monte-Carlo Tests, itemfit and personfit statistics including infit and outfit measures, ICC and other plots, automated stepwise item elimination, simulation module for various binary data matrices.

Changes in 1.0-10

MLoef() bug for missings fix, RSM option added (thanks to Rainer Alexandrowicz).

From inst/NEWS.Rd in the release

Install

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

install.packages("eRm", 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-erm

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-eRm

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-eRm

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: 4.9 min · r-devel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-06-27
WARNING12 OK, 1 WARNING2026-06-14
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.0-10

READMENoVignettesYes · 1 · dynamicNEWSYes · mentions 1.0-10Citation fileYes · cites a publicationWebsitenot declared in DESCRIPTION

Cites a JSS article

Help pages: 56
Examples that run: 96%50 run in a plain check · 2 never run
Exported functions with examples: 100%
Documented parameters: 96%
Return-value docs: 83%
Help pages citing references: 61%

Vignettes (1)

eRm Basics PDF

How these are measured

Downloads

30.5K

CRAN downloads in the past year

Rank #2,582 · ~84/day · ~2.5K/mo

Releases R versions

Daily download trend is not available in this view yet.

2.3K30 days

6K90 days

30.5K1 year

Compare downloads with other packages →

Also on495 r2u7 autocran189 c2d4u

How downloads are counted

Dependencies

Declared dependencies

2 external dependencies (excludes base and recommended)

Installing eRm adds 4 packages (2 with compiled code, 4.8 MB of source tarballs). Heaviest: colorspace 2.0 MB, GPArotation 1.6 MB, psych 1.1 MB.

Depends (1)

R >= 3.5.0

Imports (10)

graphicsgrDevicesstatsmethodsMASSsplinesMatrixlatticecolorspace psych

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

5direct

0indirect

Depends 1 · Imports 4

Suggested by 11

Show all 16 packagesHide all 16 packages

Depends, Imports or LinkingTo, most downloaded first

iarm whomds exhaustiveRasch tcl mstDIF

Suggests, most downloaded first

PP easyRasch2 eyeprocess rasch easyRaschBayes mfrmr pwrRasch lvmPlot GMX RMX tmt

How these are counted

Code & Tests

Datasets

People & History

People (5)

Patrick Mair

Maintainer since at least 0.3.2 (2006), Author

Reinhold Hatzinger

Author

Marco J. Maier

Author

Thomas Rusch

Author · added in 0.15-5

Rudolf Debelak

Contributor · added in 1.0-0

Listed in earlier versions (1)

Maier

no longer listed · 0.15-1 to 1.0-10

Releases (27)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
1.0-10Latest
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2025-05-28 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
1.0-9
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2025-03-25 · diff ↗ ·
added 1 export
coef.ppar
R
R 4.4.0 released · 2024-04-24
1.0-6
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2024-03-15 · diff ↗
1.0-5
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2024-03-01 · diff ↗
1.0-4
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2023-09-28 · diff ↗
R
R 4.3.0 released · 2023-04-21
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R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
1.0-2
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2021-02-15 · diff ↗
R
R 4.0.0 released · 2020-04-24
1.0-1
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2020-03-03 · diff ↗
1.0-0
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2019-06-06 · diff ↗
R
R 3.6.0 released · 2019-04-26

Show 38 earlier eventsHide 38 earlier events

0.16-2
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2018-10-03 · diff ↗
0.16-1
record
2018-05-26 · diff ↗
R
R 3.5.0 released · 2018-04-23
0.16-0
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2018-03-11 · diff ↗ ·
added 1 export
PersonMisfit
R
R 3.4.0 released · 2017-04-21
0.15-7
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2016-11-20 · diff ↗
R
R 3.3.0 released · 2016-05-03
0.15-6
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2015-11-12 · diff ↗
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R 3.2.0 released · 2015-04-16
0.15-5
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2015-01-10 · diff ↗ ·
added 1 export
SepRel
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R 3.1.0 released · 2014-04-10
0.15-4
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2014-02-05 · diff ↗
0.15-3
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2013-12-07 · diff ↗
R
R 3.0.0 released · 2013-04-03
0.15-1
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2012-11-11 · diff ↗ ·
added 27 exports
MLoef, plotDIF, plotPImap, plotPWmap, sim.2pl, sim.rasch, sim.xdim, sim.locdep, stepwiseIt, gofIRT, NPtest, llra.datprep, build_W, collapse_W, LLRA, plotGR, plotTR, plotINFO, item_info, test_info, i_info, rsampler, rstats, rsctrl, rsextrobj, rsextrmat, phi.range
R
R 2.15.0 released · 2012-03-30
R
R 2.14.0 released · 2011-10-31
R
R 2.13.0 released · 2011-04-13
R
R 2.12.0 released · 2010-10-15
R
R 2.11.0 released · 2010-04-22
R
R 2.10.0 released · 2009-10-26
R
R 2.9.0 released · 2009-04-17
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R 2.8.0 released · 2008-10-20
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R 2.7.0 released · 2008-04-22
0.9-5
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2007-10-24 · diff ↗
0.9-4
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2007-10-17 · diff ↗
R
R 2.6.0 released · 2007-10-03
0.9-3
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2007-09-25 · diff ↗
0.9-2
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2007-09-01 · diff ↗ ·
added 2 exports
IC, thresholds
0.9.1.1
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2007-05-23 · diff ↗
0.9.1
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2007-05-18 · diff ↗
0.9.0
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2007-04-26 · diff ↗ ·
added 9 exports
LRtest, itemfit, person.parameter, personfit, plotGOF, plotICC, plotjointICC, pmat, Waldtest
R
R 2.5.0 released · 2007-04-24
0.3.2
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2006-10-18 · diff ↗
0.3.1
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2006-10-15 · diff ↗
R
R 2.4.0 released · 2006-10-03
0.3
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2006-09-13
R
R 2.3.0 released · 2006-04-24

Package metadata

First published: 2006-09-13
Total releases: 27 / 20 yrs
License: GPL-3 OSI
Minimum R: ≥ 3.5.0
Bundled data: 163 KB / 19 files
Download size: 742 KB

Appears in task views

Missing Data Psychometric Models and Methods

Cite

Cite this package

Run in R for the authors' entry:

citation("eRm")

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

It points to 10.18637/jss.v020.i09, 10.1007/978-3-319-00035-0_34, 10.1027/1614-2241/a000090, 10.1177/0146621619835501.

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 eRm version 1.0-10 [Data set]. HJJB, LLC. Data release v2026-10-20. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-20, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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