deltaPlotR
Identification of Dichotomous Differential Item Functioning (DIF) using Angoff's Delta Plot Method
v1.9
·
Apr 25, 2026
·
GPL (>= 2)
Description
The deltaPlotR package implements Angoff's Delta Plot method to detect dichotomous DIF. Several detection thresholds are included, either from multivariate normality assumption or by prior determination. Item purification is supported (Magis and Facon (2014) <doi:10.18637/jss.v059.c01>).
Downloads
CRAN
1.4K
Last 30 days
3129th
4.8K
Last 90 days
16.7K
Last year
Trend: -18.1% (30d vs prior 30d)
r2u
CRAN
14
Last 30 days
54
Last 90 days
158
Last year
Trend: -63.2% (30d vs prior 30d)
CRAN Check Status
13
OK
Show all 13 flavors
| Flavor | Status |
|---|---|
| r-devel-linux-x86_64-debian-clang | OK |
| r-devel-linux-x86_64-debian-gcc | OK |
| r-devel-linux-x86_64-fedora-clang | OK |
| r-devel-linux-x86_64-fedora-gcc | OK |
| r-devel-windows-x86_64 | OK |
| r-oldrel-macos-arm64 | OK |
| r-oldrel-macos-x86_64 | OK |
| r-oldrel-windows-x86_64 | OK |
| r-patched-linux-x86_64 | OK |
| r-release-linux-x86_64 | OK |
| r-release-macos-arm64 | OK |
| r-release-macos-x86_64 | OK |
| r-release-windows-x86_64 | OK |
Check History
OK 13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE May 3, 2026
NOTE 0 OK · 14 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026
NOTE
r-devel-linux-x86_64-debian-clang
CRAN incoming feasibility
Maintainer: ‘David Magis <david.magis@ulg.ac.be>’
No Authors@R field in DESCRIPTION.
Please add one, modifying
Authors@R: c(person(given = "David",
family = "Magis",
role = c("aut", "cre"),
...[truncated]...
e France"))
as necessary.
Package CITATION file contains call(s) to old-style personList() or
as.personList(). Please use c() on person objects instead.
Package CITATION file contains call(s) to old-style citEntry(). Please
use bibentry() instead.
NOTE
r-devel-linux-x86_64-debian-gcc
CRAN incoming feasibility
Maintainer: ‘David Magis <david.magis@ulg.ac.be>’
No Authors@R field in DESCRIPTION.
Please add one, modifying
Authors@R: c(person(given = "David",
family = "Magis",
role = c("aut", "cre"),
...[truncated]...
e France"))
as necessary.
Package CITATION file contains call(s) to old-style personList() or
as.personList(). Please use c() on person objects instead.
Package CITATION file contains call(s) to old-style citEntry(). Please
use bibentry() instead.
NOTE
r-devel-linux-x86_64-fedora-clang
Rd files
checkRd: (-1) deltaPlot.Rd:28: Lost braces
28 | \item{purify}{logical: should item purification be performed? (Default is code{FALSE}). See \bold{Details}.}
| ^
NOTE
r-devel-linux-x86_64-fedora-gcc
Rd files
checkRd: (-1) deltaPlot.Rd:28: Lost braces
28 | \item{purify}{logical: should item purification be performed? (Default is code{FALSE}). See \bold{Details}.}
| ^
NOTE
r-devel-macos-arm64
Rd files
checkRd: (-1) deltaPlot.Rd:28: Lost braces
28 | \item{purify}{logical: should item purification be performed? (Default is code{FALSE}). See \bold{Details}.}
| ^
NOTE
r-devel-windows-x86_64
Rd files
checkRd: (-1) deltaPlot.Rd:28: Lost braces
28 | \item{purify}{logical: should item purification be performed? (Default is code{FALSE}). See \bold{Details}.}
| ^
NOTE
r-patched-linux-x86_64
Rd files
checkRd: (-1) deltaPlot.Rd:28: Lost braces
28 | \item{purify}{logical: should item purification be performed? (Default is code{FALSE}). See \bold{Details}.}
| ^
NOTE
r-release-linux-x86_64
Rd files
checkRd: (-1) deltaPlot.Rd:28: Lost braces
28 | \item{purify}{logical: should item purification be performed? (Default is code{FALSE}). See \bold{Details}.}
| ^
NOTE
r-release-macos-arm64
Rd files
checkRd: (-1) deltaPlot.Rd:28: Lost braces
28 | \item{purify}{logical: should item purification be performed? (Default is code{FALSE}). See \bold{Details}.}
| ^
NOTE
r-release-macos-x86_64
Rd files
checkRd: (-1) deltaPlot.Rd:28: Lost braces
28 | \item{purify}{logical: should item purification be performed? (Default is code{FALSE}). See \bold{Details}.}
| ^
NOTE
r-release-windows-x86_64
Rd files
checkRd: (-1) deltaPlot.Rd:28: Lost braces
28 | \item{purify}{logical: should item purification be performed? (Default is code{FALSE}). See \bold{Details}.}
| ^
NOTE
r-oldrel-macos-arm64
Rd files
checkRd: (-1) deltaPlot.Rd:28: Lost braces
28 | \item{purify}{logical: should item purification be performed? (Default is code{FALSE}). See \bold{Details}.}
| ^
NOTE
r-oldrel-macos-x86_64
Rd files
checkRd: (-1) deltaPlot.Rd:28: Lost braces
28 | \item{purify}{logical: should item purification be performed? (Default is code{FALSE}). See \bold{Details}.}
| ^
NOTE
r-oldrel-windows-x86_64
Rd files
checkRd: (-1) deltaPlot.Rd:28: Lost braces
28 | \item{purify}{logical: should item purification be performed? (Default is code{FALSE}). See \bold{Details}.}
| ^