grmtree

0.2.0

Recursive Partitioning for Graded Response Models

0packages depend

1.3Kdownloads / year

60.0%test coverage

13/13checks pass

Overview

About

Maintained by Olayinka I. ArimoroFirst published 2026-01-142 releasesCRAN page ↗GitHub ↗

Provides methods for recursive partitioning based on the 'Graded Response Model' ('GRM'), extending the 'MOB' algorithm from the 'partykit' package. The package allows for fitting 'GRM' trees that partition the population into homogeneous subgroups based on item response patterns and covariates. Includes specialized plotting functions for visualizing 'GRM' trees with different terminal node displays (threshold regions, parameter profiles, and factor score distributions). The package also implements the Longitudinal GRMTree for detecting response shift in PROMs measured at two time points, embedding a constrained two-factor longitudinal GRM within recursive partitioning, with post-hoc characterization of recalibration and reprioritization. For more details on the methods, see Samejima (1969) doi:10.1002/J.2333-8504.1968.TB00153.X, Komboz et al. (2018) doi:10.1177/0013164416664394 and Arimoro et al. (2025) doi:10.1007/s11136-025-04018-6.

Install

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

install.packages("grmtree", 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("Predicare1/grmtree")

Development version from Predicare1/grmtree. 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-grmtree

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

# 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-grmtree

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

Health

CRAN checks

13OK

Slowest check: 12.9 min · r-devel-linux-x86_64-fedora-clang

Check history

OK2026-07-14
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-07-11
9 OK · 0 NOTE · 0 WARNING · 4 ERROR · 0 FAILURE
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

Documentation signals are not tracked yet for this package.

Downloads

1.3K

CRAN downloads in the past year

Rank #19,170 · ~4/day · ~112/mo

grmtree Releases R versions

Daily download trend is not available in this view yet.

23430 days

60390 days

1.3K1 year

Compare downloads with other packages →

Also on34 r2u21 autocran

Repository

GitHub ↗ predicare1/grmtree

0Stars

0Forks

0Open issues

0Open PRs

0Releases

Last activity 2026-07-01

Repository practices

Upstream repositoryBeta

6 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/predicare1/grmtree on 2026-07-19.

Continuous integration (1)

GitHub Actions

Reproducibility and dev environment (1)

data-raw/

CRAN release process (3)

cran-comments.mdrevdep/CRAN-SUBMISSION

Lint, format, editor (1)

RStudio project

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

Dependencies

Declared dependencies

14 external dependencies (excludes base and recommended)

Depends (3)

R >= 4.1.0partykit mirt

Imports (6)

statsgraphicsgridggplot2 rlang strucchange

LinkingTo (0)

none

Suggests (9)

hlt dplyr magrittr testthat knitr rmarkdown psychotools psychotree psych

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Datasets

People & History

People (6)

Maintainer (1)

Olayinka I. Arimoro

Author, Maintainer

Authors (3)

Olayinka I. Arimoro

Author, Maintainer

Lisa M. Lix

Author

Tolulope T. Sajobi

Author

Contributors (3)

Matthew T. James

Contributor

Maria Santana

Contributor

Emmanuel Ugochukwu

Contributor

Package Timeline

2 releases. R releases are shown for context.

0.2.0Latest
2026-07-02 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
0.1.0
2026-03-10
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2026-01-14
Total releases: 2 / 1 yrs
License: GPL-3 OSI
Download size: 288 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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