R Observatory: Metrics for RMX version 0.1-7

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

RMX

0.1-7Package record

Rasch Models -- eXtensions

0packages depend

5.8Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Rainer W. AlexandrowiczCRAN page ↗

Extend Rasch and Item Response Theory (IRT) analyses by providing tools for post-processing the output from five major IRT packages (i.e., 'eRm', 'psychotools', 'ltm', 'mirt', and 'TAM'). The current version provides the plotPIccc() function, which extracts from the return object of the originating package all information required to draw an extended Person-Item-Map (PIccc), showing any combination of * category characteristic curves (CCCs), * threshold characteristic curves (TCCs), * item characteristic curves (ICCs), * category information functions (CIFs), * item information functions (IIFs), * test information function (TIF), and the * standard error curve (S.E.). for uni- and multidimensional models (as far as supported by each package). It allows for selecting dimensions, items, and categories to plot and offers numerous options to adapt the output. The return object contains all calculated values for further processing.

Changes in 0.1-7

NEW: relative reliability (O'Connor, 2018)
NEW: plotPIccc returns the standard errors of all parameters given they are provided by the originating package. Otherwise, the respective list elements contain NAs.
NEW: Option 'empirical' provides for empirical CCCs and TCCs. Several options allow for fine-tuning.
NEW: Option type='ESC' for the empirical score function.
CHG: The classical PI-Map connects the parameters across items. This allows for easier detection of threshold disordering.

From NEWS in the release

Install

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

install.packages("RMX", 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-rmx

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-RMX

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-RMX

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: 1.6 min · r-oldrel-macos-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.1-7

READMENoVignettesNoNEWSYes · 100% structured · mentions 0.1-7Citation fileYes · cites a publicationWebsitenot declared in DESCRIPTION

Help pages: 2
Examples that run: 100%2 run in a plain check
Exported functions with examples: 100%
Documented parameters: 97%
Return-value docs: 100%
Help pages citing references: 50%

How these are measured

Downloads

5.8K

CRAN downloads in the past year

Rank #12,730 · ~16/day · ~484/mo

Releases R versions

Daily download trend is not available in this view yet.

29730 days

88090 days

5.8K1 year

Compare downloads with other packages →

Also on74 r2u3 autocran

How downloads are counted

Dependencies

Declared dependencies

5 external dependencies (excludes base and recommended)

Installing RMX adds no packages beyond those that come with R.

Depends (1)

R >= 4.1.0

Imports (0)

none

LinkingTo (0)

none

Suggests (5)

eRm psychotools ltm mirt TAM

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

Datasets

People & History

People (2)

Rainer W. Alexandrowicz

Author, Maintainer since 0.1-6 (2024)

Milica Kabic

Author

Listed in earlier versions (1)

Alexandrowicz

no longer listed · 0.1-6 to 0.1-7

Releases (2)

Pick two releases to compare their code metrics.

0.1-7Latest
record
2026-05-19 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
0.1-6
record
2024-09-11
R
R 4.4.0 released · 2024-04-24

Package metadata

First published: 2024-09-11
Total releases: 2 / 2 yrs
License: GPL (>= 3) OSI
Minimum R: ≥ 4.1.0
Bundled data: 10 KB / 1 file
Download size: 55 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("RMX")

The package provides a citation file that builds its entry when R runs it. Run citation() to see it.

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 RMX version 0.1-7 [Data set]. HJJB, LLC. Data release v2026-10-21. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-21, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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