Package: Rarr 2.1.20

Hugo Gruson

Rarr: Read Zarr Files in R

The Zarr specification defines a format for chunked, compressed, N-dimensional arrays. It's design allows efficient access to subsets of the stored array, and supports both local and cloud storage systems. Rarr aims to implement this specification in R with minimal reliance on an external tools or libraries.

Authors:Mike Smith [aut, ccp], Hugo Gruson [aut, cre], Artür Manukyan [ctb], Sharla Gelfand [ctb], German Network for Bioinformatics Infrastructure - de.NBI [fnd]

Rarr_2.1.20.tar.gz
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manual.pdf |manual.html✨
DESCRIPTION |NEWS
card.svg |card.png
Rarr/json (API)

# Install 'Rarr' in R:

install.packages('Rarr', repos = c('https://bioc.r-universe.dev', 'https://cloud.r-project.org'))

Bug tracker:https://github.com/huber-group-embl/rarr/issues

Pkgdown/docs site:https://huber-group-embl.github.io

Uses libs:

c-blosc– High performance meta-compressor optimized for binary data
libzstd– Fast lossless compression algorithm

On BioConductor:Rarr-2.1.18(bioc 3.24)Rarr-2.0.1(bioc 3.23)

dataimport bioconductor ome-ngff ome-zarr on-disk out-of-memory zarr c-blosc libzstd

10.68 score 53 stars 7 packages 100 scripts 17 exports 25 dependencies

Last updated from:ae4753e327. Checks:3 WARNING, 9 NOTE, 1 OK, 1 FAIL. Indexed: yes.

Target	Result	Time
bioc-checks	WARNING	171
linux-devel-arm64	NOTE	212
linux-devel-x86_64	NOTE	158
source / vignettes	OK	208
linux-release-arm64	NOTE	160
linux-release-x86_64	NOTE	221
macos-release-arm64	NOTE	149
macos-release-x86_64	WARNING	314
macos-oldrel-arm64	NOTE	155
macos-oldrel-x86_64	WARNING	411
windows-devel	NOTE	162
windows-release	NOTE	166
windows-oldrel	NOTE	158
wasm-release	FAIL	139

Exports:create_empty_zarr_array read_zarr_array read_zarr_attributes update_zarr_array use_blosc use_bz2 use_gzip use_lz4 use_lzma use_zlib use_zstd write_zarr_array write_zarr_attributes writeZarrArray zarr_consolidate_metadata zarr_overview ZarrArray

Dependencies:askpass base64enc cli curl digest glue grumpy httr2 jsonlite lifecycle magrittr openssl paws.common paws.storage R.methodsS3 R.oo R.utils R6 rappdirs Rcpp rlang sys vctrs withr xml2

Supported Zarr features in Rarr

Rendered fromfeatures.Rmdusingknitr::rmarkdown

Last update: 2026-06-25
Started: 2025-10-31

Working with remote Zarr arrays in R

Using credentials to access S3 buckets | Creating an S3 client

Rendered fromS3.Rmdusingknitr::rmarkdown

Last update: 2026-06-23
Started: 2026-06-23

Working with Zarr arrays in R

Rendered fromRarr.Rmdusingknitr::rmarkdown

Last update: 2026-06-23
Started: 2023-01-23

Design principles for the Rarr package

Guiding principles | Scope | Zarr version | Functional programming and API design

Rendered fromdesign.Rmdusingknitr::rmarkdown

Last update: 2026-04-18
Started: 2026-03-30

Citation

Development and contributors

Readme and manuals

Help Manual

Help page	Topics
Define compression tool and settings	compressors use_blosc use_bz2 use_gzip use_lz4 use_lzma use_zlib use_zstd
Create an (empty) Zarr array	create_empty_zarr_array
Read a Zarr array	read_zarr_array
Read the attributes associated with a Zarr array or group	read_zarr_attributes
Update (a subset of) an existing Zarr array	update_zarr_array
Write an R array to Zarr	write_zarr_array
Read the .zattrs file associated with a Zarr array or group	write_zarr_attributes
Consolidate Zarr metadata files into a single file	zarr_consolidate_metadata
Print a summary of a Zarr array or group	zarr_overview
Deprecated DelayedArray backend functions	writeZarrArray ZarrArray