https://github.com/pepijn-devries/blosc

R package for compressing and decompressing data with BLOSC
https://github.com/pepijn-devries/blosc

Last synced: 3 months ago
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R package for compressing and decompressing data with BLOSC

• Host: GitHub
• URL: https://github.com/pepijn-devries/blosc
• Owner: pepijn-devries
• License: gpl-3.0
• Created: 2025-07-17T10:06:13.000Z (11 months ago)
• Default Branch: master
• Last Pushed: 2025-12-07T11:04:01.000Z (6 months ago)
• Last Synced: 2025-12-08T21:35:56.837Z (6 months ago)
• Language: C++
• Homepage: https://pepijn-devries.github.io/blosc/
• Size: 1.72 MB
• Stars: 2
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.Rmd
  • Changelog: NEWS.md
  • License: LICENSE.md
  • Code of conduct: CODE_OF_CONDUCT.md

Awesome Lists containing this project

README

          
---

output: github_document

---

```{r, include = FALSE}

knitr::opts_chunk$set(

  collapse = TRUE,

  comment = "#>",

  fig.path = "man/figures/README-",

  out.width = "50%",

  fig.width = 5,

  fig.height = 4

)

```

# BLOSC 

[![R-CMD-check](https://github.com/pepijn-devries/blosc/actions/workflows/R-CMD-check.yaml/badge.svg)](https://github.com/pepijn-devries/blosc/actions/workflows/R-CMD-check.yaml)

[![version](https://www.r-pkg.org/badges/version/blosc)](https://CRAN.R-project.org/package=blosc)

[![cran checks](https://badges.cranchecks.info/worst/blosc.svg)](https://cran.r-project.org/web/checks/check_results_blosc.html)

[![R-universe version](https://pepijn-devries.r-universe.dev/blosc/badges/version)](https://pepijn-devries.r-universe.dev/blosc)

[![Codecov test coverage](https://codecov.io/gh/pepijn-devries/blosc/graph/badge.svg)](https://app.codecov.io/gh/pepijn-devries/blosc)

[Blosc](https://www.blosc.org/) is a blocking, shuffling and lossless compression

algorithm. It is often used to compress n-dimensional structured

array data. It is applied (among others) in the geo-spatial

[zarr](https://zarr.dev/) file format. This package ports BLOSC compressors and

decompressors to R.

## Installation

Install latest developmental version from R-Universe:

``` r

install.packages("blosc", repos = c('https://pepijn-devries.r-universe.dev', 'https://cloud.r-project.org'))

```

MacOS users may first need to install system requirements before installing the package using:

```r

source("https://mac.R-project.org/bin/install.R")

install.libs("blosc")

```

## Example

The blosc package can be used to compress `raw` data, but also vectors of

other data types. The example below shows how data from the volcano matrix

can be compressed with blosc.

```{r example1}

library(blosc)

volcano_compressed <-

  blosc_compress(volcano, typesize = 2L, dtype = "