R Observatory: Metrics for cpr version 0.4.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

cpr

0.4.1Package record

Control Polygon Reduction

0packages depend

5.1Kdownloads / year

72.5%test coverage

13/13flavors OK

Overview

About

Maintained by Peter DeWittCRAN page ↗GitHub ↗Website ↗Issues ↗

Implementation of the Control Polygon Reduction and Control Net Reduction methods for finding parsimonious B-spline regression models.

Changes in 0.4.1

Bug fixes:

plot_bs() builds the x-axis correctly for a basis built with values outside of the boundary knots.

Other fixes:

Spelling and gammar fixes in documentation and vignettes.

Non-User Visible Changes

C++ error handling now uses Rcpp::stop() for consistent error signaling. (Thanks to @Enchufa2, re #63)

From NEWS.md in the release

Install

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

install.packages("cpr", 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("dewittpe/cpr")

Development version from dewittpe/cpr. 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-cpr

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-cpr

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-cpr

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: 9.7 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK12 OK2026-04-25
NOTE12 OK, 2 NOTE2026-04-22
ERROR11 OK, 2 NOTE, 1 ERROR2026-04-18

Show 1 earlier changeHide 1 earlier change

NOTE12 OK, 2 NOTE2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.4.1

READMEYes · 378 wordsVignettesYes · 2 · dynamicNEWSYes · 100% structured · mentions 0.4.1Citation fileNoWebsiteYes · pkgdown

Help pages: 42 (1 internal)includes a package overview page
Examples that run: 95%35 run in a plain check · 2 only when donttest examples are enabled (R CMD check --as-cran)
Exported functions with examples: 95%
Documented parameters: 95%
Return-value docs: 90%
Help pages citing references: 14%

Vignettes (2)

How these are measured

Downloads

5.1K

CRAN downloads in the past year

Rank #9,159 · ~14/day · ~427/mo

Releases R versions

Daily download trend is not available in this view yet.

44030 days

1K90 days

5.1K1 year

Compare downloads with other packages →

Also on390 r2u4 autocran

How downloads are counted

Repository

dewittpe/cpr ↗Account: dewittpe

2Stars

1Forks

8Open issues

0Open PRs

0Releases

684Commits

2Commit identities

684 commits · Last activity 2026-01-07 · 0% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 100%
Median days to close, 50 most recently updated closed issues: 16
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2022-01-31 · 22026-07-07 · 2

How these are measured

PracticesBeta

9 development-tooling and community-health practices detected across 5 families in the upstream repository

Checks run against github.com/dewittpe/cpr on 2026-10-18.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, macOS and Windows, and on R-devel

Docs source (3)

pkgdown

GitHub Pages site last deployed 2026-01-08 · The repository has a site deploy workflow

pkgdown site last built 2026-01-08

Coverage (1)

Coverage reporting (Codecov)

Reproducibility and dev environment (2)

data-raw/Makefile

Show all practicesHide 1 practice

CRAN release process (1)

cran-comments.md

How this is detected·Detection ruleset v3 (2026-09-26)

Dependencies

Declared dependencies

12 external dependencies (excludes base and recommended)

Installing cpr adds 52 packages (28 with compiled code, 49 MB of source tarballs). Heaviest: ggplot2 6.0 MB, bslib 5.6 MB, lme4 4.1 MB.

Depends (1)

R >= 3.5.0

Imports (6)

ggplot2 lme4 plot3D Rcpp (>= 1.0.11)rgl scales

LinkingTo (2)

Rcpp RcppArmadillo

Suggests (5)

Matrixgeepack ggpubr knitr qwraps2

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 (3)

Peter DeWitt

Author, Maintainer since 0.2.3 (2017)

Nichole Carlson

Thesis advisor

Samantha MaWhinney

Thesis advisor

Releases (4)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
0.4.1Latest
record
2026-01-08 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
0.4.0
record
2024-02-15 · diff ↗ ·
removed 1 export
loglikelihood

added 6 exports
d_order_statistic, influence_of_iknots, insert_a_knot, p_order_statistic, sign_changes, wiegh_iknots
0.3.0
record
2023-11-29 · diff ↗ ·
removed 6 exports
is.cpr_bs, is.cpr_bt, is.cpr_cn, is.cpr_cnr, is.cpr_cp, is.cpr_cpr
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
R
R 3.5.0 released · 2018-04-23
R
R 3.4.0 released · 2017-04-21
0.2.3
record
2017-03-07
R
R 3.3.0 released · 2016-05-03

Package metadata

First published: 2017-03-07
Total releases: 4 / 9 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.5.0
Bundled data: 277 KB / 2 files
Download size: 1.6 MB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("cpr")

Format

DeWitt, P., Carlson, N., & MaWhinney, S. (2026). cpr: Control Polygon Reduction (Version 0.4.1) [Computer software]. https://doi.org/10.32614/CRAN.package.cpr

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 cpr version 0.4.1 [Data set]. HJJB, LLC. Data release v2026-10-20. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-20, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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