R Observatory: Metrics for GammaFrailtySPC version 0.1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

GammaFrailtySPC

0.1.0Package record

Statistical Process Control Based on Gamma-Frailty AFT Models

0packages depend

553downloads / year

65.7%test coverage

13/13flavors OK

Overview

About

Maintained by Shikhar TyagiCRAN page ↗

Implements statistical process control ('SPC') monitoring schemes for heterogeneous reliability observations using Accelerated Failure Time ('AFT') models integrated with continuous gamma frailty. It accommodates both uncensored and right-censored reliability observations in the presence of observed and unobserved covariates. Provides Phase I maximum likelihood estimation of Weibull 'AFT' gamma frailty model parameters, and Phase II monitoring procedures including probability-limits-based control charts, exponentially weighted moving average ('EWMA') charts with conditional expected values, and likelihood-ratio cumulative sum ('CUSUM') control charts. Competing 'CUSUM' schemes (ignoring unobserved frailty or both covariates) and Average Run Length ('ARL') simulation utilities are also provided. The statistical methodology is based on Asadzadeh (2022) doi:10.1080/00949655.2021.1959582.

Install

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

install.packages("GammaFrailtySPC", 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-gammafrailtyspc

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-GammaFrailtySPC

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-GammaFrailtySPC

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: 1.9 min · r-oldrel-windows-x86_64

Status changes

OK13 OKNow
OK6 OK2026-08-09

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.1.0

READMENoVignettesYes · 1 · dynamicNEWSNoCitation fileNoWebsitenot declared in DESCRIPTION

Help pages: 10 (1 internal)includes a package overview page
Examples that run: 88%7 run in a plain check · 1 only when donttest examples are enabled (R CMD check --as-cran)
Exported functions with examples: 100%
Documented parameters: 98%
Return-value docs: 100%
Help pages citing references: 80%

Vignettes (1)

Statistical Process Control Based on Gamma-Frailty AFT Models HTML

How these are measured

Downloads

553

CRAN downloads in the past year

Rank #23,359 · ~2/day · ~46/mo

Releases R versions

Daily download trend is not available in this view yet.

21030 days

55390 days

5531 year

Compare downloads with other packages →

Also on12 r2u2 autocran

How downloads are counted

Dependencies

Declared dependencies

4 external dependencies (excludes base and recommended)

Installing GammaFrailtySPC adds 6 packages (2 with compiled code, 3.1 MB of source tarballs). Heaviest: sandwich 1.4 MB, maxLik 791 KB, zoo 675 KB.

Depends (1)

R >= 4.0.0

Imports (6)

maxLiksurvivalstatsgraphicsgrDevicesutils

LinkingTo (0)

none

Suggests (3)

testthat knitr rmarkdown

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

Datasets

People & History

People (4)

Shikhar Tyagi

Author, Maintainer since 0.1.0 (2026)

Arvind Pandey

Author

Bhupendra Singh

Author

Vrijesh Tripathi

Author

Releases (1)

0.1.0Latest
record
2026-08-08 · current release
R
R 4.6.0 released · 2026-04-24

Package metadata

First published: 2026-08-08
Total releases: 1 / 1 yrs
License: GPL-3 OSI
Minimum R: ≥ 4.0.0
Bundled data: 2.3 KB / 1 file
Download size: 40 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("GammaFrailtySPC")

Format

Tyagi, S., Pandey, A., Singh, B., & Tripathi, V. (2026). GammaFrailtySPC: Statistical Process Control Based on Gamma-Frailty AFT Models (Version 0.1.0) [Computer software]. https://doi.org/10.32614/CRAN.package.GammaFrailtySPC

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 GammaFrailtySPC version 0.1.0 [Data set]. HJJB, LLC. Data release v2026-10-22. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-22, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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