SOMbrero

1.5.0

SOM Bound to Realize Euclidean and Relational Outputs

0packages depend

6.6Kdownloads / year

42.1%test coverage

13/13checks pass

Overview

About

Maintained by Nathalie VialaneixFirst published 2015-03-2815 releasesCRAN page ↗GitHub ↗

The stochastic (also called on-line) version of the Self-Organising Map (SOM) algorithm is provided. Different versions of the algorithm are implemented, for numeric and relational data and for contingency tables as described, respectively, in Kohonen (2001) <isbn:3-540-67921-9>, Olteanu & Villa-Vialaneix (2005) doi:10.1016/j.neucom.2013.11.047 and Cottrell et al (2004) doi:10.1016/j.neunet.2004.07.010. The package also contains many plotting features (to help the user interpret the results), can handle (and impute) missing values and is delivered with a graphical user interface based on 'shiny'.

Install

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

install.packages("SOMbrero", 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("tuxette/SOMbrero")

Development version from tuxette/SOMbrero. 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-sombrero

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-SOMbrero

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-SOMbrero

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

Health

CRAN checks

13OK

Slowest check: 3.3 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 0.08

42.1%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 95%
Return-value docs: 100%
References docs: 69%

Downloads

6.6K

CRAN downloads in the past year

Rank #9,294 · ~18/day · ~548/mo

Releases R versions

Daily download trend is not available in this view yet.

30830 days

1.2K90 days

6.6K1 year

Compare downloads with other packages →

Also on125 r2u22 autocran2.5K conda_forge51 c2d4u

Repository

GitHub ↗ tuxette/sombrero

17Stars

5Forks

0Open issues

0Open PRs

0Releases

406Commits

9Contributors

406 commits · Last activity 2025-08-19

Stars over time

2024-06-06 · 172026-07-07 · 17

Repository practices

Upstream repositoryBeta

Checks run against github.com/tuxette/sombrero on 2026-07-19.

No development-tooling practices detected in the upstream repository.

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

Dependencies

Declared dependencies

18 external dependencies (excludes base and recommended)

Depends (3)

R >= 3.1.0igraph markdown

Imports (10)

scatterplot3d shinygrDevicesgraphicsstatsggplot2 ggwordcloud metR interp rlang

LinkingTo (0)

none

Suggests (9)

testthat rmarkdown knitr hexbin shinycssloaders shinyBS shinyjs shinyjqui RColorBrewer

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Code Composition

R 4,298 (74%)Rd 1,446 (25%)Vignettes 78 (1%)

Code characteristics

Object systems

S324

Cyclomatic complexity: 2.0 median / 49 max
Test cases: 27 / 0.08 per code line

Test coverage

Line coverage

42%

Expression

41.5%

Tests / Examples

42.1% / 46% ex

Functions

84 10 exported

Complexity

5.7 avg / 49 max

Call network

84 nodes / 92 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

84 functions

Function	Cyclo	Coverage
cutree exp	1	0%
impute exp	1	0%
projectIGraph exp	1	0%
protoDist exp	1	0%
sombreroGUI exp	2	0%
superClass exp	1	0%

Datasets

Bundled datasets · 1

Name	Class	Rows × Cols	Also ships in
presidentielles2002	data.frame	106 × 16	–

People & History

People (7)

Maintainer (1)

Nathalie Vialaneix

Author, Maintainer · added in 1.2-4

Authors (5)

Nathalie Vialaneix

Author, Maintainer · added in 1.2-4

Elise Maigne

Author · added in 1.2-5

Jerome Mariette

Author · added in 1.2

Madalina Olteanu

Author

Fabrice Rossi

Author · added in 1.2

Contributors (2)

Laura Bendhaiba

Contributor

Julien Boelaert

Contributor

Listed in earlier versions (1)

Nathalie Villa-Vialaneix

no longer listed · 1.0 to 1.2-3

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
1.5.0Latest
2025-10-06 · current release · diff ↗
1.4.4
2025-08-18 · diff ↗
1.4-3
2025-06-19 · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
1.4-2
2024-01-25 · diff ↗
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
1.4-1
2022-01-03 · diff ↗
1.4
2022-01-03 · diff ↗
R
R 4.1.0 released · 2021-05-18
1.3-1
2020-08-11 · diff ↗
1.3
2020-06-08 · diff ↗
R
R 4.0.0 released · 2020-04-24
1.2-5
2020-03-05 · diff ↗

Show 12 earlier events

R
R 3.6.0 released · 2019-04-26
1.2-4
2019-03-07 · diff ↗
R
R 3.5.0 released · 2018-04-23
1.2-3
2018-02-05 · diff ↗
1.2-2
2017-09-20 · diff ↗
R
R 3.4.0 released · 2017-04-21
1.2
2016-09-02 · diff ↗
R
R 3.3.0 released · 2016-05-03
1.1
2015-11-04 · diff ↗
R
R 3.2.0 released · 2015-04-16
1.0
2015-03-28
R
R 3.1.0 released · 2014-04-10

Package metadata

First published: 2015-03-28
Total releases: 15 / 11 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.1.0
Bundled data: 12 KB / 2 files
Download size: 3.6 MB
Installed size: not tracked yet
With dependencies: not tracked yet

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