twopartm

0.1.0

Two-Part Model with Marginal Effects

0packages depend

3.9Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Yajie DuanFirst published 2022-10-141 releasesCRAN page ↗

Fit two-part regression models for zero-inflated data. The models and their components are represented using S4 classes and methods. Average Marginal effects and predictive margins with standard errors and confidence intervals can be calculated from two-part model objects. Belotti, F., Deb, P., Manning, W. G., & Norton, E. C. (2015) doi:10.1177/1536867X1501500102.

Install

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

install.packages("twopartm", 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-twopartm

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-twopartm

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-twopartm

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

Health

CRAN checks

13OK

Slowest check: 1.5 min · r-oldrel-windows-x86_64

Code health

None

Tests · ratio 0.00

not tracked

Coverage

Dependencies · direct

Check history

OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 548 wordsVignettesNopkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: not tracked
Return-value docs: not tracked
References docs: 92%

Downloads

3.9K

CRAN downloads in the past year

Rank #12,210 · ~11/day · ~328/mo

Releases R versions

Daily download trend is not available in this view yet.

26030 days

87490 days

3.9K1 year

Compare downloads with other packages →

Also on97 r2u30 autocran

Dependencies

Declared dependencies

1 external dependency (excludes base and recommended)

Depends (1)

R >= 2.10

Imports (5)

methodsgraphicsstatsdata.tableMASS

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Code Composition

R 1,653 (62%)Rd 992 (38%)

Code characteristics

Object systems

S4 class1S4 generic4S4 method11

Cyclomatic complexity: 3.0 median / 18 max

Test coverage

Line coverage

–

Expression

–

Tests / Examples

–

Functions

15 0 exported

Complexity

6.5 avg / 18 max

Call network

15 nodes / 25 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
bioChemists	data.frame	915 × 6	in 3 packages
meps	data.frame	19,386 × 32	–

People & History

People (5)

Maintainer (1)

Yajie Duan

Author, Maintainer

Authors (4)

Author, Maintainer

Author

Author

Author

Funders (1)

Package Timeline

1 release. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
0.1.0Latest
2026-03-10 · current release
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2022-10-14
Total releases: 1 / 4 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 2.10
Bundled data: 392 KB / 2 files
Download size: 415 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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