D3mirt

2.1.0

Descriptive 2D and 3D Descriptive Multidimensional Item Response Theory Modeling

0packages depend

3.8Kdownloads / year

55.7%test coverage

13/13checks pass

Overview

About

Maintained by Erik ForsbergFirst published 2023-04-289 releasesCRAN page ↗GitHub ↗

For identifying, estimating, and plotting descriptive multidimensional item response theory models, restricted to 2D and 3D and dichotomous or polytomous data that fit the two-parameter logistic model or the graded response model. The method is primarily exploratory and centered on the plot function, which exposes item characteristics and constructs, represented by vector arrows, within a three-dimensional interactive latent space. The results can be useful for item-level analysis as well as test development.

Install

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

install.packages("D3mirt", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("ForsbergPsychometrics/D3mirt")

Development version from ForsbergPsychometrics/D3mirt. Installs pak first if it is not already available.

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-d3mirt

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

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-D3mirt

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-D3mirt

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 3.8 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.71

55.7%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-05-02
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-25
11 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 5,034 wordsVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 29%
Documented parameters: 100%
Return-value docs: 100%
References docs: 36%

Downloads

3.8K

CRAN downloads in the past year

Rank #9,829 · ~11/day · ~320/mo

Releases R versions

Daily download trend is not available in this view yet.

35430 days

1.1K90 days

3.8K1 year

Compare downloads with other packages →

Also on90 r2u30 autocran19 c2d4u

Repository

GitHub ↗ forsbergpsychometrics/d3mirt

2Stars

2Forks

0Open issues

4Open PRs

3Releases

793Commits

3Contributors

License GPL-3.0 · 793 commits · Last activity 2026-07-12

Commits over time

2026-07-12 · 7922026-07-19 · 793

Repository practices

Upstream repositoryBeta

6 development-tooling and community-health practices detected across 5 families in the upstream repository

Checks run against github.com/forsbergpsychometrics/d3mirt on 2026-07-19.

Continuous integration (1)

GitHub Actions

Reproducibility and dev environment (1)

data-raw/

CRAN release process (2)

cran-comments.mdrevdep/

Docs source (1)

README.Rmd

Show all practices

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

6 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.6.0

Imports (2)

mirt rgl

LinkingTo (0)

none

Suggests (5)

knitr rmarkdownstatstestthat R.rsp

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Code Composition

R 2,772 (48%)Markdown 1,787 (31%)Rd 1,188 (21%)Other 3 (0%)

Code characteristics

Object systems

S310

Cyclomatic complexity: 11.5 median / 81 max
Test cases: 3 / 0.71 per code line

Test coverage

Line coverage

56%

Expression

58.5%

Tests / Examples

55.7% / 0% ex

Functions

14 4 exported

Complexity

27.6 avg / 81 max

Call network

14 nodes / 0 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

14 functions

Function	Cyclo	Coverage
plot.D2mirt	81	28%
plot.D3mirt	79	31%
print.D2mirt	9	56%
modid exp	12	62%
information.D3mirt	24	66%
D3mirt exp	62	69%

Datasets

Bundled datasets · 3

Name	Class	Rows × Cols	Also ships in
anes0809offwaves	data.frame	1,046 × 22	–
angles2D	data.frame	16 × 4	–
angles3D	data.frame	42 × 6	–

People & History

People (1)

Maintainer (1)

Erik Forsberg

Author, Maintainer, Copyright holder

Authors (1)

Erik Forsberg

Author, Maintainer, Copyright holder

Erik Forsberg

Author, Maintainer, Copyright holder

Listed in earlier versions (1)

Anders Sjöberg

no longer listed · 1.0.1

Package Timeline

9 releases. Pick two to compare their code metrics. R releases are shown for context.

2.1.0Latest
2026-07-08 · current release · diff ↗
2.0.5
2026-06-07 · diff ↗
R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
2.0.4
2024-06-22 · diff ↗
R
R 4.4.0 released · 2024-04-24
1.1.0
2023-08-08 · diff ↗
1.0.5
2023-07-20 · diff ↗
1.0.4
2023-06-12 · diff ↗
1.0.3
2023-05-11 · diff ↗
1.0.2
2023-05-10 · diff ↗
1.0.1
2023-04-28
R
R 4.3.0 released · 2023-04-21

Package metadata

First published: 2023-04-28
Total releases: 9 / 3 yrs
License: GPL (>= 3) OSI
Minimum R: ≥ 3.6.0
Bundled data: 13 KB / 3 files
Download size: 878 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Psychometric Models and Methods

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