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DACF: Data Analysis with Ceiling and/or Floor Data

An implementation of data analytic methods in R for analyses for data with ceiling/floor effects. The package currently includes functions for mean/variance estimation and mean comparison tests. Implemented methods are from Aitkin (1964) <doi:10.1007/BF02289723> and Liu & Wang (2021) <doi:10.3758/s13428-020-01407-2>.

Version: 1.1.0
Depends: R (≥ 3.5)
Imports: mvtnorm, qgraph, Matrix, psych, utils
Suggests: knitr, rmarkdown, MASS, ggplot2
Published: 2026-07-16
DOI: 10.32614/CRAN.package.DACF
Author: Qimin Liu [aut, cre], Lijuan Wang [aut], Lauren Trichtinger [aut], Grace Murray [ctb]
Maintainer: Qimin Liu <Qliuacademia at gmail.com>
License: GPL-2
NeedsCompilation: no
Materials: README, NEWS
CRAN checks: DACF results

Documentation:

Reference manual: DACF.html , DACF.pdf
Vignettes: Data Analyses with Ceiling/Floor data (source, R code)

Downloads:

Package source: DACF_1.1.0.tar.gz
Windows binaries: r-devel: not available, r-release: not available, r-oldrel: not available
macOS binaries: r-release (arm64): not available, r-oldrel (arm64): not available, r-release (x86_64): not available, r-oldrel (x86_64): not available
Old sources: DACF archive

Linking:

Please use the canonical form https://CRAN.R-project.org/package=DACF to link to this page.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.