RcppAnnoy: 'Rcpp' Bindings for 'Annoy', a Library for Approximate Nearest Neighbors

'Annoy' is a small C++ library for Approximate Nearest Neighbors written for efficient memory usage as well an ability to load from / save to disk. This package provides an R interface by relying on the 'Rcpp' package, exposing the same interface as the original Python wrapper to 'Annoy'. See <https://github.com/spotify/annoy> for more on 'Annoy'. 'Annoy' is released under Version 2.0 of the Apache License. Also included is a small Windows port of 'mmap' which is released under the MIT license.

Version:	0.0.23
Depends:	R (≥ 3.1)
Imports:	methods, Rcpp
LinkingTo:	Rcpp
Suggests:	tinytest
Published:	2026-01-12
DOI:	10.32614/CRAN.package.RcppAnnoy
Author:	Dirk Eddelbuettel [aut, cre], Erik Bernhardsson [aut] (Principal author of Annoy)
Maintainer:	Dirk Eddelbuettel <edd at debian.org>
BugReports:	https://github.com/eddelbuettel/rcppannoy/issues
License:	GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
URL:	https://github.com/eddelbuettel/rcppannoy, https://dirk.eddelbuettel.com/code/rcpp.annoy.html
NeedsCompilation:	yes
Materials:	README, NEWS, ChangeLog
CRAN checks:	RcppAnnoy results

Documentation:

Reference manual:	RcppAnnoy.html , RcppAnnoy.pdf
Vignettes:	Using Annoy in C++ (source)

Downloads:

Package source:	RcppAnnoy_0.0.23.tar.gz
Windows binaries:	r-devel: RcppAnnoy_0.0.23.zip, r-release: RcppAnnoy_0.0.23.zip, r-oldrel: RcppAnnoy_0.0.23.zip
macOS binaries:	r-release (arm64): RcppAnnoy_0.0.23.tgz, r-oldrel (arm64): RcppAnnoy_0.0.23.tgz, r-release (x86_64): RcppAnnoy_0.0.23.tgz, r-oldrel (x86_64): RcppAnnoy_0.0.23.tgz
Old sources:	RcppAnnoy archive

Reverse dependencies:

Reverse imports:	bbknnR, bigANNOY, blocking, eiR, RCSL, scDHA, Seurat, SIMLR, uwot
Reverse linking to:	bigANNOY, scDHA, uwot
Reverse suggests:	VectrixDB

Linking:

Please use the canonical form https://CRAN.R-project.org/package=RcppAnnoy to link to this page.