R Observatory: Metrics for soma version 1.2.1

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

soma

1.2.1Package record

General-Purpose Optimisation with the Self-Organising Migrating Algorithm

1packages dependsuggested by 1

3.7Kdownloads / year

93.2%test coverage

13/13flavors OK

Overview

About

Maintained by Jon ClaydenCRAN page ↗GitHub ↗

An R implementation of the Self-Organising Migrating Algorithm, a general-purpose, stochastic optimisation algorithm. The approach is similar to that of genetic algorithms, although it is based on the idea of a series of "migrations" by a fixed set of individuals, rather than the development of successive generations. It can be applied to any cost-minimisation problem with a bounded parameter space, and is robust to local minima.

Changes in 1.2.1

Evaluation counts now include those associated with evaluating the initial state.
The code now checks that the specified perturbation chance is sensible (greater than 0 and no larger than 1), as an infinite loop may otherwise occur. Additional argument checks have also been added to package functions.
Random individuals introduced when steps go out of bounds could be in the wrong array shape. This has been corrected.
The T3A and Pareto strategies are now also exercised by package tests.

From NEWS in the release

Install

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

install.packages("soma", 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("jonclayden/soma")

Development version from jonclayden/soma. 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-soma

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

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-soma

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-soma

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 47 s · r-devel-windows-x86_64

Status changes

OK13 OK2026-08-26
NOTE12 OK, 2 NOTE2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.2.1

READMEYes · 585 wordsVignettesNoNEWSYes · 33% structured · mentions 1.2.1Citation fileNoWebsitenot declared in DESCRIPTION

Help pages: 2
Examples that run: 100%1 run in a plain check
Exported functions with examples: 50%
Documented parameters: 68%
Return-value docs: 100%
Help pages citing references: 100%

Also includes 1 demo script (run with demo())

How these are measured

Downloads

3.7K

CRAN downloads in the past year

Rank #7,782 · ~10/day · ~310/mo

Releases R versions

Daily download trend is not available in this view yet.

40730 days

1.2K90 days

3.7K1 year

Compare downloads with other packages →

Also on113 r2u2 autocran138 c2d4u

How downloads are counted

Repository

jonclayden/soma ↗Account: jonclayden

8Stars

2Forks

0Open issues

0Open PRs

2Releases

60Commits

1Commit identities

60 commits · Last activity 2026-08-21

Responsiveness

not measured

Stars over time

2023-03-09 · 82026-07-07 · 8

How these are measured

PracticesBeta

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

Checks run against github.com/jonclayden/soma on 2026-10-21.

Continuous integration (3)

GitHub ActionsR CMD check workflowTravis CI (config file)

The R CMD check workflow runs on Linux and Windows

Docs source (1)

README.Rmd

Coverage (1)

Coverage reporting (Codecov)

How this is detected·Detection ruleset v4 (2026-10-20)

Dependencies

Declared dependencies

4 external dependencies (excludes base and recommended)

Installing soma adds 2 packages (1 with compiled code, 531 KB of source tarballs). Heaviest: ore 488 KB, reportr 43 KB.

Depends (1)

R >= 2.5.0

Imports (1)

reportr

LinkingTo (0)

none

Suggests (3)

tinytest covr shades

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1direct

0indirect

Imports 1

Suggested by 1

Depends, Imports or LinkingTo, most downloaded first

calibrar

Suggests, most downloaded first

MSCMT

How these are counted

Code & Tests

People & History

People (1)

Jon Clayden

Maintainer since 1.0.0 (2010), Author

Listed in earlier versions (1)

based on the work of Ivan Zelinka

no longer listed · 1.0.0 to 1.1.1

Releases (5)

Pick two releases to compare their code metrics.

1.2.1Latest
record
2026-08-21 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
1.2.0
record
2022-05-02 · diff ↗ ·
added 4 exports
all2one, bounds, pareto, t3a
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
R
R 3.4.0 released · 2017-04-21
R
R 3.3.0 released · 2016-05-03
R
R 3.2.0 released · 2015-04-16
1.1.1
record
2014-11-25 · diff ↗
R
R 3.1.0 released · 2014-04-10

Show 7 earlier eventsHide 7 earlier events

R
R 3.0.0 released · 2013-04-03
R
R 2.15.0 released · 2012-03-30
R
R 2.14.0 released · 2011-10-31
1.1.0
record
2011-07-28 · diff ↗ ·
added 1 export
soma
R
R 2.13.0 released · 2011-04-13
1.0.0
record
2010-12-13
R
R 2.12.0 released · 2010-10-15

Package metadata

First published: 2010-12-13
Total releases: 5 / 16 yrs
License: GPL-2 OSI
Minimum R: ≥ 2.5.0
Download size: 704 KB

Appears in task views

Optimization and Mathematical Programming

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("soma")

Format

Clayden, J. (2026). soma: General-Purpose Optimisation with the Self-Organising Migrating Algorithm (Version 1.2.1) [Computer software]. https://doi.org/10.32614/CRAN.package.soma

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for soma version 1.2.1 [Data set]. HJJB, LLC. Data release v2026-10-23. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-23, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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