uwot

0.2.4

The Uniform Manifold Approximation and Projection (UMAP) Method for Dimensionality Reduction

51packages depend

705Kdownloads / year

83.3%test coverage

8/13checks pass

Overview

About

Maintained by James MelvilleFirst published 2019-04-0616 releasesCRAN page ↗GitHub ↗

An implementation of the Uniform Manifold Approximation and Projection dimensionality reduction by McInnes et al. (2018) doi:10.48550/arXiv.1802.03426. It also provides means to transform new data and to carry out supervised dimensionality reduction. An implementation of the related LargeVis method of Tang et al. (2016) doi:10.48550/arXiv.1602.00370 is also provided. This is a complete re-implementation in R (and C++, via the 'Rcpp' package): no Python installation is required. See the uwot website (https://github.com/jlmelville/uwot) for more documentation and examples.

Install

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

install.packages("uwot", 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("jlmelville/uwot")

Development version from jlmelville/uwot. 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-uwot

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-uwot

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-uwot

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

Health

CRAN checks

5NOTE8OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-clang
NOTE r-devel-linux-x86_64-debian-gcc
NOTE r-devel-linux-x86_64-fedora-clang
NOTE r-devel-linux-x86_64-fedora-gcc
NOTE r-devel-windows-x86_64

Slowest check: 8.3 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.50

83.3%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

NOTE2026-07-16
11 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-04-25
12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-04-22
12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
11 OK · 2 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-04-10
12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Show 2 earlier snapshots

ERROR2026-04-09
11 OK · 2 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-03-10
12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 99%
Return-value docs: 92%
References docs: 50%

Downloads

705K

CRAN downloads in the past year

Rank #488 · ~1.9K/day · ~58.8K/mo

Releases R versions

Daily download trend is not available in this view yet.

53.7K30 days

169.2K90 days

705K1 year

Compare downloads with other packages →

Also on12.5K r2u35 autocran157.6K conda_forge76 c2d4u

Repository

GitHub ↗ jlmelville/uwot

367Stars

30Forks

16Open issues

0Open PRs

25Releases

1,060Commits

12Contributors

rumapdimensionality-reduction

License GPL-3.0 · 1,060 commits · Last activity 2026-07-03 · 0% stars, 30d

Stars over time

2025-07-10 · 3372026-07-07 · 367

Repository practices

Upstream repositoryBeta

5 development-tooling and community-health practices detected across 3 families in the upstream repository

Checks run against github.com/jlmelville/uwot on 2026-07-19.

Continuous integration (2)

GitHub ActionsAppVeyor

CRAN release process (2)

cran-comments.mdrevdep/

Coverage (1)

Codecov

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

Dependencies

Declared dependencies

16 external dependencies (excludes base and recommended)

Depends (1)

Matrix

Imports (6)

FNN irlbamethodsRcpp RcppAnnoy RSpectra

LinkingTo (4)

dqrng Rcpp RcppAnnoy RcppProgress

Suggests (7)

bigstatsr covr knitr RcppHNSW rmarkdown rnndescent testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

51direct

47indirect

and 3 more packages.

Code & Tests

Code Composition

R 13,965 (69%)Rd 4,360 (22%)C++ 1,055 (5%)Vignettes 389 (2%)C 382 (2%)

Code characteristics

Cyclomatic complexity: 3.0 median / 159 max
Test cases: 158 / 0.50 per code line

Test coverage

Line coverage

83%

Expression

84.5%

Tests / Examples

83.3% / 60% ex

Functions

212 12 exported

Complexity

5.6 avg / 159 max

Call network

212 nodes / 319 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

212 functions

Function	Cyclo	Coverage
umap2 exp	28	0%
.onUnload	1	0%
bigstatsr_is_installed	1	0%
bigstatsr_scores	3	0%
col_sum_normalize	1	0%
fast_intersection	5	0%

People & History

People (7)

Maintainer (1)

James Melville

Author, Maintainer, Copyright holder

Authors (1)

James Melville

Author, Maintainer, Copyright holder

Contributors (6)

Mohamed Nadhir Djekidel

Contributor · added in 0.1.5

Dirk Eddelbuettel

Contributor · added in 0.1.15

Hugo Gruson

Contributor · added in 0.2.4

Yuhan Hao

Contributor · added in 0.1.9

Aaron Lun

Contributor · added in 0.1.5

Wouter van der Bijl

Contributor · added in 0.2.3

James Melville

Author, Maintainer, Copyright holder

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
0.2.4Latest
2025-11-10 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
0.2.3
2025-02-24 · diff ↗
R
R 4.4.0 released · 2024-04-24
0.2.2
2024-04-21 · diff ↗
0.2.1
2024-04-15 · diff ↗
0.1.16
2023-06-29 · diff ↗
0.1.15
2023-06-26 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.1.14
2022-08-22 · diff ↗
0.1.13
2022-08-16 · diff ↗
R
R 4.2.0 released · 2022-04-22
0.1.11
2021-12-02 · diff ↗
R
R 4.1.0 released · 2021-05-18
0.1.10
2020-12-15 · diff ↗

Show 9 earlier events

0.1.9
2020-11-15 · diff ↗
R
R 4.0.0 released · 2020-04-24
0.1.8
2020-03-16 · diff ↗
0.1.5
2019-12-04 · diff ↗
0.1.4
2019-09-23 · diff ↗
R
R 3.6.0 released · 2019-04-26
0.1.3
2019-04-08 · diff ↗
0.1.2
2019-04-06
R
R 3.5.0 released · 2018-04-23

Package metadata

First published: 2019-04-06
Total releases: 16 / 7 yrs
License: GPL (>= 3) OSI
Download size: 600 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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