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grumpy: Read 'NumPy' '.npy' and '.npz' Files

Lightweight way to read 'NumPy' '.npy' and '.npz' files in R. All data types supported by 'NumPy', with all sizes (converted internally to R native size), both C and 'Fortran' order, and any shape, up to an arbitrary number of dimensions, are supported.

Version: 0.1.1
Depends: R (≥ 4.2.0)
Imports: jsonlite
Suggests: knitr, rmarkdown, testthat (≥ 3.0.0)
Published: 2026-05-19
DOI: 10.32614/CRAN.package.grumpy (may not be active yet)
Author: Hugo Gruson ORCID iD [aut, cre, cph], Mike Smith [aut, cph] (Original author of portions of the C code migrated from the Rarr package), German Network for Bioinformatics Infrastructure - de.NBI [fnd]
Maintainer: Hugo Gruson <hugo.gruson+R at normalesup.org>
BugReports: https://github.com/Bisaloo/grumpy/issues
License: MIT + file LICENSE
URL: https://hugogruson.fr/grumpy/, https://github.com/Bisaloo/grumpy
NeedsCompilation: yes
Materials: README, NEWS
CRAN checks: grumpy results

Documentation:

Reference manual: grumpy.html , grumpy.pdf
Vignettes: Design principles (source, R code)
Getting started with grumpy (source, R code)

Downloads:

Package source: grumpy_0.1.1.tar.gz
Windows binaries: r-devel: not available, r-release: grumpy_0.1.1.zip, r-oldrel: grumpy_0.1.1.zip
macOS binaries: r-release (arm64): grumpy_0.1.1.tgz, r-oldrel (arm64): grumpy_0.1.1.tgz, r-release (x86_64): grumpy_0.1.1.tgz, r-oldrel (x86_64): grumpy_0.1.1.tgz

Linking:

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These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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