R Observatory: Metrics for RcppCNPy version 0.2.15

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

RcppCNPy

0.2.15Package record

Read-Write Support for 'NumPy' Files via 'Rcpp'

0packages depend

14.3Kdownloads / year

66.0%test coverage

13/13flavors OK

Overview

About

Maintained by Dirk EddelbuettelCRAN page ↗GitHub ↗Website ↗Issues ↗

The 'cnpy' library written by Carl Rogers provides read and write facilities for files created with (or for) the 'NumPy' extension for 'Python'. Vectors and matrices of numeric types can be read or written to and from files as well as compressed files. Support for integer files is available if the package has been built with as C++11 which should be the default on all platforms since the release of R 3.3.0.

Changes in 0.2.15

Replaced Rf_error with Rcpp::stop in three files
Maintenance updates to continuous integration

From inst/NEWS.Rd in the release

Install

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

install.packages("RcppCNPy", 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("eddelbuettel/rcppcnpy")

Development version from eddelbuettel/rcppcnpy. 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-rcppcnpy

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-RcppCNPy

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 3.1 min · r-devel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-05-02
NOTE11 OK, 1 NOTE2026-04-25
OK14 OK2026-04-22

Show 4 earlier changesHide 4 earlier changes

ERROR13 OK, 1 ERROR2026-04-18
OK14 OK2026-04-16
NOTE13 OK, 1 NOTE2026-03-28
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.2.15

READMEYes · 259 wordsVignettesYes · 2 · staticNEWSYes · mentions 0.2.15Citation fileYes · cites a publicationWebsiteYes

Cites a JOSS paper

Help pages: 1includes a package overview page
Examples that run: 0%1 never run
Exported functions with examples: not tracked
Documented parameters: not tracked
Return-value docs: not tracked
Help pages citing references: 100%

Also includes 1 demo script (run with demo())

Vignettes (2)

RcppCNPy-intro PDF
RcppCNPy-reticulate PDF

How these are measured

Downloads

14.3K

CRAN downloads in the past year

Rank #3,756 · ~39/day · ~1.2K/mo

Releases R versions

Daily download trend is not available in this view yet.

78730 days

2.5K90 days

14.3K1 year

Compare downloads with other packages →

Also on422 r2u6.2K conda_forge

How downloads are counted

Repository

eddelbuettel/rcppcnpy ↗Account: eddelbuettel

31Stars

14Forks

2Open issues

0Open PRs

0Releases

190Commits

5Commit identities

rcranr-packagenumpyc-plus-plus

License file reads as GPL-2.0 · 190 commits · Last activity 2026-03-13 · 0% stars, 30d

Responsiveness

How these are sampled

PRs merged (all time): 88%
Median days to close, 50 most recently updated closed issues: 2
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2025-08-20 · 302026-09-13 · 31

How these are measured

PracticesBeta

2 development-tooling and community-health practices detected across 2 families in the upstream repository

Checks run against github.com/eddelbuettel/rcppcnpy on 2026-10-18.

Continuous integration (1)

GitHub Actions

Governance and community (1)

The repository owner accepts GitHub Sponsors

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

Dependencies

Declared dependencies

4 external dependencies (excludes base and recommended)

Installing RcppCNPy adds 1 package (1 with compiled code, 1.8 MB of source tarballs). Heaviest: Rcpp 1.8 MB.

Depends (1)

R >= 3.1.0

Imports (2)

methodsRcpp

LinkingTo (1)

Rcpp

Suggests (2)

reticulate rbenchmark

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

People & History

People (3)

Dirk Eddelbuettel

Author, Maintainer since 0.0.1 (2012)

Carl Rogers

Author · added in 0.2.13

Author of CNPy

Wush Wu

Author · added in 0.2.4

Releases (18)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
0.2.15Latest
record
2026-03-13 · current release · diff ↗
0.2.14
record
2025-11-04 · diff ↗
R
R 4.5.0 released · 2025-04-11
0.2.13
record
2024-09-03 · diff ↗
R
R 4.4.0 released · 2024-04-24
0.2.12
record
2023-11-27 · diff ↗
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
0.2.11
record
2022-03-25 · diff ↗
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
0.2.10
record
2018-07-29 · diff ↗
R
R 3.5.0 released · 2018-04-23
0.2.9
record
2018-03-23 · diff ↗

Show 17 earlier eventsHide 17 earlier events

0.2.8
record
2018-01-04 · diff ↗
0.2.7
record
2017-09-22 · diff ↗
R
R 3.4.0 released · 2017-04-21
0.2.6
record
2016-09-26 · diff ↗
0.2.5
record
2016-08-26 · diff ↗
R
R 3.3.0 released · 2016-05-03
R
R 3.2.0 released · 2015-04-16
0.2.4
record
2015-01-06 · diff ↗
0.2.3
record
2014-04-10 · diff ↗
R
R 3.1.0 released · 2014-04-10
0.2.2
record
2013-11-30 · diff ↗
0.2.1
record
2013-11-28 · diff ↗
R
R 3.0.0 released · 2013-04-03
0.2.0
record
2012-07-31 · diff ↗
0.1.0
record
2012-07-08 · diff ↗
0.0.1
record
2012-07-05
R
R 2.15.0 released · 2012-03-30

Package metadata

First published: 2012-07-05
Total releases: 18 / 14 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.1.0
Download size: 216 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("RcppCNPy")

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 RcppCNPy version 0.2.15 [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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