conquestr: An R Package to Extend 'ACER ConQuest'

Extends 'ACER ConQuest' through a family of functions designed to improve graphical outputs and help with advanced analysis (e.g., differential item functioning). Allows R users to call 'ACER ConQuest' from within R and read 'ACER ConQuest' System Files (generated by the command ‘put' <https://conquestmanual.acer.org/s4-00.html#put>). Requires ’ACER ConQuest' version 5.40 or later. A demonstration version can be downloaded from <https://shop.acer.org/acer-conquest-5.html>.

Version: 1.5.5
Depends: R (≥ 4.1.0)
Imports: dplyr, ggplot2 (≥ 3.5.1), ggrepel, kableExtra, magrittr, methods, Rcpp, rlang, stats, stringr, tidyr, tidyselect, zlib
LinkingTo: Rcpp
Suggests: knitr, gridExtra, rmarkdown, testthat (≥ 3.2.1)
Published: 2025-08-23
DOI: 10.32614/CRAN.package.conquestr
Author: Dan Cloney ORCID iD [aut, cre], Ray Adams [aut]
Maintainer: Dan Cloney <dan.cloney at acer.org>
License: GPL-3
URL: https://www.acer.org/au/conquest, https://conquestmanual.acer.org, https://shop.acer.org/acer-conquest-5.html
NeedsCompilation: yes
SystemRequirements: ACER ConQuest (>=5.40.0)
Materials: README, NEWS
In views: Psychometrics
CRAN checks: conquestr results

Documentation:

Reference manual: conquestr.html , conquestr.pdf
Vignettes: Data cleaning function in conquestr (source, R code)
Generate item responses in conquestr (source, R code)
Introduction to conquestr (source, R code)
Item analysis tables in conquestr (source, R code)
Plotting in conquestr (source, R code)
Probability of response vectors in conquestr (source, R code)
Item Review Sheets produced using conquestr (source, R code)

Downloads:

Package source: conquestr_1.5.5.tar.gz
Windows binaries: r-devel: conquestr_1.5.5.zip, r-release: conquestr_1.5.5.zip, r-oldrel: conquestr_1.5.5.zip
macOS binaries: r-release (arm64): conquestr_1.5.5.tgz, r-oldrel (arm64): conquestr_1.5.5.tgz, r-release (x86_64): conquestr_1.5.5.tgz, r-oldrel (x86_64): conquestr_1.5.5.tgz
Old sources: conquestr archive

Linking:

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