pizzarr

0.2.0

Slice into 'Zarr' Arrays

0packages depend

2.4Kdownloads / year

85.5%test coverage

12/13checks pass

Overview

About

Maintained by David BlodgettFirst published 2026-03-244 releasesCRAN page ↗GitHub ↗

An implementation of chunked, compressed, N-dimensional arrays for R. 'Zarr' spec V2 (2024) doi:10.5281/zenodo.11320255.

Install

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

install.packages("pizzarr", 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("zarr-developers/pizzarr")

Development version from zarr-developers/pizzarr. 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-pizzarr

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

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-pizzarr

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-pizzarr

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

1NOTE12OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-gcc

Slowest check: 3.9 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 1.73

85.5%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-06-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-08
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-26
10 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-03-25
5 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE

Documentation

READMEYes · 1,007 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 98%
Return-value docs: 44%
References docs: 1%

Downloads

2.4K

CRAN downloads in the past year

Rank #7,307 · ~6/day · ~197/mo

Releases R versions

Daily download trend is not available in this view yet.

19730 days

1.3K90 days

2.4K1 year

Compare downloads with other packages →

Also on52 r2u5 autocran

Repository

GitHub ↗ zarr-developers/pizzarr

49Stars

3Forks

10Open issues

0Open PRs

4Releases

181Commits

3Contributors

zarr

181 commits · Last activity 2026-05-16 · +2.1% stars, 30d

Stars over time

2026-07-09 · 482026-07-28 · 49

Repository practices

Upstream repositoryBeta

5 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/zarr-developers/pizzarr on 2026-08-02.

Continuous integration (1)

GitHub Actions

Docs source (1)

README.Rmd

Governance and community (2)

Issue templatesPR template

Git structural (1)

.gitattributes

How this is detected·Detection ruleset v1 (2026-07-18)

Development tooling

AI-assisted toolingBeta

Uses AI-assisted development tooling (declared in repo)

Earliest detected marker: claude on 2026-03-11

claude

Most recent: claude on 2026-03-11

Evidence

claude: on 2026-03-11 · evidence B, D

How this is detected·Detection ruleset v2 (updated 2026-07-29)

Dependencies

Declared dependencies

17 external dependencies (excludes base and recommended)

Depends (1)

R >= 4.2

Imports (7)

jsonlitestatsR6 qs2 stringr memoiseutils

LinkingTo (0)

none

Suggests (12)

testthat knitr covr bslib pkgdown rmarkdown crul blosc vcr bench bit64 withr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (4)

Maintainer (1)

David Blodgett

Maintainer, Author

Authors (3)

Maintainer, Author

Author

Author

Package Timeline

4 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
0.2.0Latest
2026-04-20 · current release · diff ↗
0.1.2
2026-04-07 · diff ↗
0.1.1
2026-03-25 · diff ↗
0.1.0
2026-03-24
R
R 4.5.0 released · 2025-04-11

Package metadata

First published: 2026-03-24
Total releases: 4 / 1 yrs
License: MIT + file LICENSE OSI
Minimum R: ≥ 4.2
Download size: not tracked yet
Installed size: not tracked yet
With dependencies: not tracked yet

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