R Observatory: Metrics for pch version 2.2

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

pch

2.2Package record

Piecewise Constant Hazard Models for Censored and Truncated Data

4packages depend

4.8Kdownloads / year

–test coverage

13/13flavors OK

Overview

About

Maintained by Paolo FrumentoCRAN page ↗

Piecewise constant hazard models for survival data. The package allows for right-censored, left-truncated, and interval-censored data.

Changes in 2.2

modified the Author field in DESCRIPTION as requested by new CRAN policy
added the [pkg] option whenever \link to another R package not in the base package

From NEWS.md in the release

Install

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

install.packages("pch", 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-pch

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-pch

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-pch

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

13OK

CRAN check page ↗

Slowest check: 2.4 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
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 2.2

READMENoVignettesNoNEWSYes · 33% structured · mentions 2.2Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 4 (1 internal)
Examples that run: 100%3 run in a plain check
Exported functions with examples: 100%
Documented parameters: 100%
Return-value docs: 100%
Help pages citing references: 25%

How these are measured

Downloads

4.8K

CRAN downloads in the past year

Rank #9,542 · ~13/day · ~397/mo

Releases R versions

Daily download trend is not available in this view yet.

38430 days

1K90 days

4.8K1 year

Compare downloads with other packages →

Also on115 r2u4 autocran124 c2d4u

How downloads are counted

Dependencies

Declared dependencies

1 external dependency (excludes base and recommended)

Installing pch adds 51 packages (26 with compiled code, 52 MB of source tarballs). Heaviest: stringi 11 MB, ggplot2 6.0 MB, data.table 5.7 MB.

Depends (2)

survivalHmisc

Imports (1)

stats

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

4direct

2indirect

Depends 4

Depends, Imports or LinkingTo, most downloaded first

qrcm ctqr Mqrcm Qest

How these are counted

Code & Tests

People & History

People (1)

Paolo Frumento

Author, Maintainer since 1.0 (2015)

Releases (8)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
2.2Latest
record
2025-07-23 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
2.1
record
2024-02-09 · 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
2.0
record
2021-02-01 · diff ↗
R
R 4.0.0 released · 2020-04-24
1.4
record
2020-02-27 · diff ↗
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
1.3
record
2016-11-06 · diff ↗
1.2
record
2016-08-20 · diff ↗

Show 4 earlier eventsHide 4 earlier events

R
R 3.3.0 released · 2016-05-03
1.1
record
2016-02-18 · diff ↗ ·
added 1 export
splinex
1.0
record
2015-11-27
R
R 3.2.0 released · 2015-04-16

Package metadata

First published: 2015-11-27
Total releases: 8 / 11 yrs
License: GPL-2 OSI
Download size: 17 KB

Appears in task views

Survival Analysis

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("pch")

Format

Frumento, P. (2025). pch: Piecewise Constant Hazard Models for Censored and Truncated Data (Version 2.2) [Computer software]. https://doi.org/10.32614/CRAN.package.pch

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

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 pch version 2.2 [Data set]. HJJB, LLC. Data release v2026-10-26. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-26, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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