R Observatory: Metrics for blosc version 0.1.2

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

blosc

0.1.2Package record

Compress and Decompress Data Using the 'BLOSC' Library

1packages dependsuggested by 1

4.8Kdownloads / year

86.3%test coverage

13/13flavors OK

Overview

About

Maintained by Pepijn de VriesCRAN page ↗GitHub ↗Website ↗Issues ↗

Arrays of structured data types can require large volumes of disk space to store. 'Blosc' is a library that provides a fast and efficient way to compress such data. It is often applied in storage of n-dimensional arrays, such as in the case of the geo-spatial 'zarr' file format. This package can be used to compress and decompress data using 'Blosc'.

Changes in 0.1.2

Updates to configure script

From NEWS.md in the release

Install

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

install.packages("blosc", 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("pepijn-devries/blosc")

Development version from pepijn-devries/blosc. 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-blosc

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-blosc

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-oldrel-macos-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK13 OK2026-05-08
WARNING12 OK, 1 WARNING2026-05-07
OK13 OK2026-05-02

Show 4 earlier changesHide 4 earlier changes

NOTE11 OK, 1 NOTE2026-04-25
OK14 OK2026-04-08
NOTE13 OK, 1 NOTE2026-03-30
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.1.2

READMEYes · 224 wordsVignettesYes · 2 · dynamicNEWSYes · 100% structured · mentions 0.1.2Citation fileNoWebsiteYes · pkgdown

Help pages: 4 (1 internal)includes a package overview page
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: 0%

Vignettes (2)

Blosc Compression HTML
Data Types HTML

How these are measured

Downloads

4.8K

CRAN downloads in the past year

Rank #6,087 · ~13/day · ~400/mo

Releases R versions

Daily download trend is not available in this view yet.

42330 days

1.4K90 days

4.8K1 year

Compare downloads with other packages →

Also on395 r2u

How downloads are counted

Repository

pepijn-devries/blosc ↗Account: pepijn-devries

3Stars

0Forks

0Open issues

0Open PRs

0Releases

195Commits

1Commit identities

License file reads as GPL-3.0 · 195 commits · Last activity 2025-12-07 · 0% stars, 30d · Default branch at 0.1.2.0002, ahead of CRAN 0.1.2 (checked 2026-10-21)

Responsiveness

How these are sampled

PRs merged (all time): 97%
Median days to close, 50 most recently updated closed issues: 6
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2025-11-08 · 12026-07-07 · 3

How these are measured

PracticesBeta

11 development-tooling and community-health practices detected across 7 families in the upstream repository

Checks run against github.com/pepijn-devries/blosc on 2026-10-21.

Continuous integration (2)

GitHub ActionsR CMD check workflow

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

Governance and community (1)

Code of conduct

Docs source (4)

README.Rmdpkgdown

GitHub Pages site last deployed 2025-12-07 · The repository has a site deploy workflow

pkgdown site last built 2025-12-07

Coverage (1)

Coverage reporting (Codecov)

Show all practicesHide 3 practices

Reproducibility and dev environment (1)

data-raw/

Lint, format, editor (1)

RStudio project

Git structural (1)

.gitattributes

How this is detected·Detection ruleset v4 (2026-10-20)

Dependencies

Declared dependencies

7 external dependencies (excludes base and recommended)

Installing blosc adds 1 package (0 with compiled code, 298 KB of source tarballs). Heaviest: cpp11 298 KB.

Depends (1)

R >= 4.3

Imports (0)

none

LinkingTo (1)

cpp11

Suggests (6)

dplyr knitr reticulate rmarkdown spelling testthat (>= 3.0.0)

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

1indirect

Imports 1

Suggested by 1

Depends, Imports or LinkingTo, most downloaded first

zarr

Suggests, most downloaded first

pizzarr

How these are counted

Code & Tests

People & History

People (3)

Pepijn de Vries

Author, Maintainer since 0.0.6 (2025)

Alexander Gessler

Copyright holder

Chris Maiwald

Copyright holder

Releases (3)

Pick two releases to compare their code metrics.

R
R 4.6.0 released · 2026-04-24
0.1.2Latest
record
2025-09-27 · current release · diff ↗
0.1.1
record
2025-09-11 · diff ↗
0.0.6
record
2025-09-01
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2025-09-01
Total releases: 3 / 1 yrs
License: GPL (>= 3) OSI
Minimum R: ≥ 4.3
Download size: 150 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("blosc")

Format

de Vries, P., Gessler, A., & Maiwald, C. (2025). blosc: Compress and Decompress Data Using the 'BLOSC' Library (Version 0.1.2) [Computer software]. https://doi.org/10.32614/CRAN.package.blosc

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 blosc version 0.1.2 [Data set]. HJJB, LLC. Data release v2026-10-25. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-25, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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