EstCRM

1.6

Calibrating Parameters for the Samejima's Continuous IRT Model

3packages depend

4.5Kdownloads / year

–test coverage

11/13checks pass

Overview

About

Maintained by Cengiz ZopluogluFirst published 2011-06-157 releasesCRAN page ↗

Estimates item and person parameters for the Continuous Response Model (CRM; Samejima, 1973, doi:10.1007/BF02291114), computes item fit residual statistics, draws empirical 3D item category response curves, draws theoretical 3D item category response curves, and generates data under the CRM for simulation studies.

Install

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

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

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

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-estcrm

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-EstCRM

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-EstCRM

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

Health

CRAN checks

2NOTE11OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-clang
NOTE r-devel-linux-x86_64-debian-gcc

Slowest check: 2.3 min · r-oldrel-windows-x86_64

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

Dependencies · direct

Check history

NOTE2026-06-09
11 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
11 OK · 1 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-03-10
12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSYes · 33% structuredCode of conductNoContributing guideNo

Examples that run: 0%
Documented parameters: 100%
Return-value docs: 100%
References docs: 70%

Downloads

4.5K

CRAN downloads in the past year

Rank #9,379 · ~12/day · ~372/mo

Releases R versions

Daily download trend is not available in this view yet.

31930 days

1.2K90 days

4.5K1 year

Compare downloads with other packages →

Also on100 r2u11 autocran91 c2d4u

Dependencies

Declared dependencies

1 external dependency (excludes base and recommended)

Depends (2)

Hmisclattice

Imports (0)

none

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

3direct

0indirect

TestAnaAPP airt outlierensembles

Code & Tests

Code Composition

Rd 956 (59%)R 651 (41%)

Code characteristics

Object systems

S31

Cyclomatic complexity: 8.0 median / 35 max

Test coverage

Line coverage

–

Expression

–

Tests / Examples

–

Functions

7 6 exported

Complexity

11.9 avg / 35 max

Call network

7 nodes / 1 edges

Call graph

Open call graph →

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Lowest coverage

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

Datasets

Bundled datasets · 2

Name	Class	Rows × Cols	Also ships in
EPIA	data.frame	1,033 × 5	–
SelfEff	data.frame	307 × 10	–

People & History

People (0)

Author records are not tracked yet for this package.

Listed in earlier versions (1)

Cengiz Zopluoglu

no longer listed · 1.0 to 1.6

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
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R 4.5.0 released · 2025-04-11
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R 4.4.0 released · 2024-04-24
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R 4.3.0 released · 2023-04-21
1.6Latest
2022-09-16 · current release · diff ↗
1.5
2022-06-14 · diff ↗
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
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R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03
1.4
2015-07-13 · diff ↗
R
R 3.2.0 released · 2015-04-16
R
R 3.1.0 released · 2014-04-10

Show 8 earlier events

R
R 3.0.0 released · 2013-04-03
1.3
2012-07-30 · diff ↗
R
R 2.15.0 released · 2012-03-30
1.2
2012-02-06 · diff ↗
R
R 2.14.0 released · 2011-10-31
1.1
2011-06-17 · diff ↗
1.0
2011-06-15
R
R 2.13.0 released · 2011-04-13

Package metadata

First published: 2011-06-15
Total releases: 7 / 15 yrs
License: GPL (>= 2) OSI
Bundled data: 13 KB / 2 files
Download size: 31 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Psychometric Models and Methods

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