birtr

1.0.0

The R Package for "The Basics of Item Response Theory Using R"

0packages depend

3.6Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Seock-Ho KimFirst published 2017-10-041 releasesCRAN page ↗

R functions for "The Basics of Item Response Theory Using R" by Frank B. Baker and Seock-Ho Kim (Springer, 2017, ISBN-13: 978-3-319-54204-1) including iccplot(), icccal(), icc(), iccfit(), groupinv(), tcc(), ability(), tif(), and rasch(). For example, iccplot() plots an item characteristic curve under the two-parameter logistic model.

Install

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

install.packages("birtr")

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

Release

# one-time r2u setup for Ubuntu (noble)

curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash

# then install

sudo apt install r-cran-birtr

Fast Ubuntu binaries via r2u (no compilation). Run the setup once per machine.

bspm (used by r2u) also needs make: sudo apt install make

sudo dnf copr enable iucar/cran

sudo dnf install R-CRAN-birtr

RPMs from the iucar/cran COPR, rebuilt from CRAN.

sudo zypper install R-birtr

RPMs auto-built from CRAN on openSUSE OBS.

Health

CRAN checks

13OK

Code health

Yes

Tests · ratio 0.02

not tracked

Coverage

100%

Documentation · exports

None

Vignettes

README

Dependencies · direct

Check history

OK2026-04-25
12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-03-10
11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Downloads

3.6K

CRAN downloads in the past year

Rank #10,460 · ~10/day · ~303/mo

29030 days

1K90 days

3.6K1 year

Also on1.4K r2u23 autocran19 c2d4u

Source & community

Repository stars, issues, and contributor activity are not tracked yet.

Dependencies

Declared dependencies

1 external dependency (excludes base and recommended)

Depends (1)

R >= 3.4.1

Imports (0)

none

LinkingTo (0)

none

Suggests (1)

testthat

Enhances (0)

none

Reverse dependencies

0direct

–indirect (not tracked)

Nothing depends on this yet.

Code

1,149Lines of code

9Exported functions

Code & tests

Open call graph →

Line coverage

–

Expression

–

Tests / Examples

–

Functions

11 9 exported

Complexity

6.3 avg / 19 max

Call network

11 nodes / 2 edges

Test coverage has not been measured for this package yet; nodes fall back to a neutral fill.

Loading call graph…

Lowest coverage

Per-function coverage is not measured for this package yet.

People & History

People (1)

Maintainer (1)

Seock-Ho Kim

Author, Maintainer

Release timeline

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

R
R 4.6.0 released · 2026-04-24
1.0.0Latest
2026-03-10 · current release

Package metadata

First published: 2017-10-04
Total releases: 1 / 9 yrs
License: GPL (>= 2) OSI
Download size: not tracked yet
Installed size: not tracked yet
With dependencies: not tracked yet