R Observatory: Metrics for pscl version 1.5.9

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

pscl

1.5.9Package record

Political Science Computational Laboratory

36packages dependsuggested by 48

393.3Kdownloads / year

–test coverage

8/13flavors OK

Overview

About

Maintained by Simon JackmanCRAN page ↗GitHub ↗

Bayesian analysis of item-response theory (IRT) models, roll call analysis; computing highest density regions; maximum likelihood estimation of zero-inflated and hurdle models for count data; goodness-of-fit measures for GLMs; data sets used in writing and teaching; seats-votes curves.

Install

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

install.packages("pscl", 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("atahk/pscl")

Development version from atahk/pscl. 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-pscl

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

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-pscl

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-pscl

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

5NOTE8OK

Check messages

NOTER code for possible problemsr-devel-linux-x86_64-debian-clang, r-devel-linux-x86_64-debian-gcc, r-devel-linux-x86_64-fedora-clang, r-devel-linux-x86_64-fedora-gcc, r-devel-windows-x86_64

Found calls to structure() using deprecated special names:
  pscl/R/hurdle.R (.Names: 1)
  pscl/R/zeroinfl.R (.Names: 1)
'.Names' should be changed to 'names'.

CRAN check page ↗

Slowest check: 4.1 min · r-devel-windows-x86_64

Status changes

NOTE8 OK, 5 NOTENow
NOTE11 OK, 2 NOTE2026-07-16
OK13 OK2026-06-09
ERROR12 OK, 1 ERROR2026-06-08
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.5.9

READMEYes · 135 wordsVignettesYes · 1 · dynamicNEWSNoCitation fileYes · cites a publicationWebsitenot declared in DESCRIPTION

Help pages: 59
Examples that run: 87%48 run in a plain check · 7 never run
Exported functions with examples: 100%
Documented parameters: 89%
Return-value docs: 94%
Help pages citing references: 42%

Vignettes (1)

Regression Models for Count Data in R PDF

How these are measured

Downloads

393.3K

CRAN downloads in the past year

Rank #650 · ~1.1K/day · ~32.8K/mo

Releases R versions

Daily download trend is not available in this view yet.

29.9K30 days

85.9K90 days

393.3K1 year

Compare downloads with other packages →

Also on5.4K r2u10 autocran13.8K conda_forge181 bioconda289 c2d4u

How downloads are counted

Repository

atahk/pscl ↗Account: atahk

74Stars

15Forks

11Open issues

0Open PRs

1Releases

64Commits

10Commit identities

64 commits · Last activity 2026-04-20 · 0% stars, 30d · Default branch at 1.6.0, ahead of CRAN 1.5.9 (checked 2026-10-22)

Responsiveness

How these are sampled

PRs merged (all time): 75%
Median days to close, 50 most recently updated closed issues: 22
Median days to close, 50 most recently updated closed PRs: 3

Stars over time

2025-10-07 · 702026-09-19 · 74

How these are measured

PracticesBeta

1 development-tooling and community-health practice detected across 1 family in the upstream repository

Checks run against github.com/atahk/pscl on 2026-10-22.

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v4 (2026-10-20)

Dependencies

Declared dependencies

8 external dependencies (excludes base and recommended)

Installing pscl adds no packages beyond those that come with R.

Depends (0)

none

Imports (6)

MASSdatasetsgrDevicesgraphicsstatsutils

LinkingTo (0)

none

Suggests (10)

latticeMCMCpack car lmtest sandwich zoo coda vcd mvtnormmgcv

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

36direct

8indirect

Depends 8 · Imports 28

Suggested by 48

Show the 48 most downloaded packagesHide the 48 most downloaded packages

Depends, Imports or LinkingTo, most downloaded first

Suggests, most downloaded first

sandwich insight performance parameters ggstats glmmTMB AER marginaleffects modelsummary ggeffects modelbased sjPlot

and 36 more packages that suggest it on CRAN ↗

How these are counted

Code & Tests

Datasets

People & History

People (6)

Simon Jackman

Author, Maintainer since 0.5 (2005)

James Fearon

Contributor · added in 1.5.9

Christina Maimone

Contributor · added in 0.58

Zoe Meers

Contributor · added in 1.5.1

Alex Tahk

Contributor · added in 1.5.9

Achim Zeileis

Contributor · added in 0.73

Listed in earlier versions (2)

Jim Fearon

no longer listed · 0.58 to 1.5.5.1

with contributions from Alex Tahk

no longer listed · 0.58 to 1.5.5.1

Releases (39)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
1.5.9Latest
record
2024-01-31 · current release · diff ↗
1.5.5.1
record
2023-05-10 · diff ↗
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
1.5.5
record
2020-03-07 · diff ↗
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
1.5.2
record
2017-10-10 · diff ↗
1.5.1
record
2017-08-30 · diff ↗
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03

Show 52 earlier eventsHide 52 earlier events

R
R 3.2.0 released · 2015-04-16
1.4.9
record
2015-03-29 · diff ↗
1.4.8
record
2015-01-24 · diff ↗
1.4.6
record
2014-08-27 · diff ↗
R
R 3.1.0 released · 2014-04-10
R
R 3.0.0 released · 2013-04-03
1.04.4
record
2012-06-13 · diff ↗
R
R 2.15.0 released · 2012-03-30
R
R 2.14.0 released · 2011-10-31
1.04.1
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2011-10-23 · diff ↗
1.04
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2011-10-15 · diff ↗
R
R 2.13.0 released · 2011-04-13
1.03.10
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2011-03-31 · diff ↗
1.03.6.1
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2011-03-21 · diff ↗
R
R 2.12.0 released · 2010-10-15
1.03.6
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2010-08-26 · diff ↗
R
R 2.11.0 released · 2010-04-22
1.03.5
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2010-04-13 · diff ↗
1.03.4
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2010-04-12 · diff ↗
1.03.3
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2010-01-19 · diff ↗
1.03.2
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2009-11-19 · diff ↗
R
R 2.10.0 released · 2009-10-26
R
R 2.9.0 released · 2009-04-17
1.03
record
2009-01-27 · diff ↗
1.02
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2008-10-21 · diff ↗
R
R 2.8.0 released · 2008-10-20
1.01
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2008-10-12 · diff ↗
1.00
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2008-07-18 · diff ↗
0.97
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2008-07-16 · diff ↗
0.96
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2008-06-26 · diff ↗
R
R 2.7.0 released · 2008-04-22
0.95
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2008-03-20 · diff ↗
0.94
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2008-02-17 · diff ↗
R
R 2.6.0 released · 2007-10-03
0.92
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2007-05-16 · diff ↗
0.91
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2007-05-13 · diff ↗ ·
added 4 exports
hurdletest, simpi, hitmiss, pR2
R
R 2.5.0 released · 2007-04-24
0.75
record
2007-01-25 · diff ↗
0.73
record
2006-11-29 · diff ↗ ·
added 2 exports
seatsVotes, plot.seatsVotes
0.72
record
2006-10-25 · diff ↗ ·
removed 3 exports
predprob.glm, predprob.ideal, predprob.zeroinfl

added 2 exports
hurdle.control, zeroinfl.control
R
R 2.4.0 released · 2006-10-03
0.61
record
2006-08-19 · diff ↗ ·
added 1 export
summary.rollcall
0.60
record
2006-08-03 · diff ↗ ·
removed 4 exports
dropUnanimous.rollcall, dropUnanimous.matrix, plot1d, plot2d

added 1 export
postProcess
0.59
record
2006-07-21 · diff ↗
0.58
record
2006-07-12 · diff ↗ ·
added 22 exports
predprob.glm, predprob.ideal, predprob.zeroinfl, computeMargins, constrain.items, constrain.legis, convertCodes, dropRollCall, dropUnanimous, dropUnanimous.rollcall, dropUnanimous.matrix, extractRollCallObject, ideal, idealToMCMC, readKH, rollcall, plot.predict.ideal, plot.ideal, plot1d, plot2d, tracex, vectorRepresentation
0.54
record
2006-04-27 · diff ↗ ·
added 5 exports
densigamma, pigamma, qigamma, rigamma, igammaHDR
R
R 2.3.0 released · 2006-04-24
R
R 2.2.0 released · 2005-10-06
0.52
record
2005-09-06 · diff ↗ ·
added 2 exports
ntable, betaHPD
0.51
record
2005-06-14 · diff ↗
0.5
record
2005-05-31
R
R 2.1.0 released · 2005-04-18

Package metadata

First published: 2005-05-31
Total releases: 39 / 21 yrs
License: GPL-2 OSI
Bundled data: 137 KB / 20 files
Download size: 2.9 MB

Appears in task views

Bayesian Inference Econometrics Analysis of Ecological and Environmental Data Psychometric Models and Methods

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("pscl")

The package provides a citation file that builds its entry when R runs it. Run citation() to see it.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for pscl version 1.5.9 [Data set]. HJJB, LLC. Data release v2026-10-24. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-24, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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