R Observatory: Metrics for cPCG version 1.0

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

This package was removed from CRAN on 2025-12-25. Its history is shown below.

Reason: issues were not addressed in time

Details below reflect version 1.0, its last release before removal.

cPCG

1.0Package record

Efficient and Customized Preconditioned Conjugate Gradient Method for Solving System of Linear Equations

0packages dependsuggested by 1

–downloads / year

–test coverage

–flavors OK

Overview

About

Maintained by Yongwen ZhuangCRAN page ↗

Solves system of linear equations using (preconditioned) conjugate gradient algorithm, with improved efficiency using Armadillo templated 'C++' linear algebra library, and flexibility for user-specified preconditioning method. Please check https://github.com/styvon/cPCG for latest updates.

Install

R (source archive)

url <- "https://cran.r-project.org/src/contrib/Archive/cPCG/cPCG_1.0.tar.gz"
pkgFile <- "cPCG_1.0.tar.gz"
download.file(url, pkgFile)
install.packages(pkgFile, type = "source", repos = NULL)

This package is no longer on CRAN, so install.packages() cannot fetch it by name. This downloads the last archived source (1.0) and builds it locally. Install its dependencies first, and note that building from source needs the usual compiler toolchain.

Health

CRAN checks

CRAN check results are not tracked yet.

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.0

READMENoVignettesYes · 1 · dynamicNEWSNoCitation fileNoWebsitenot declared in DESCRIPTION

Help pages: 4includes a package overview page
Examples that run: 25%1 run in a plain check · 3 never run
Exported functions with examples: 100%
Documented parameters: not tracked
Return-value docs: not tracked
Help pages citing references: 75%

How these are measured

Downloads

Releases R versions

Daily download trend is not available in this view yet.

Compare downloads with other packages →

Also on336 r2u4 autocran

How downloads are counted

Dependencies

Declared dependencies

5 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.0.0

Imports (1)

Rcpp

LinkingTo (2)

Rcpp RcppArmadillo

Suggests (2)

knitr rmarkdown

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

–indirect (not tracked)

Suggested by 1

Suggests, most downloaded first

MoBPS

How these are counted

Code & Tests

People & History

People (1)

Yongwen Zhuang

Contributor

Maintainer since 1.0 (2019)

Releases (1)

R
R 4.6.0 released · 2026-04-24
archivedRemoved from CRAN
2025-12-25
issues were not addressed in time
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
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
R
R 3.6.0 released · 2019-04-26
1.0
record
2019-01-11
R
R 3.5.0 released · 2018-04-23

Package metadata

First published: 2019-01-11
Total releases: 1 / 7 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.0.0

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("cPCG")

Format

Zhuang, Y. (n.d.). cPCG: Efficient and Customized Preconditioned Conjugate Gradient Method for Solving System of Linear Equations (Version 1.0) [Computer software]. Retrieved October 27, 2026, from https://CRAN.R-project.org/package=cPCG

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 cPCG version 1.0 [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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