RcppArmadillo

15.4.0-1

'Rcpp' Integration for the 'Armadillo' Templated Linear Algebra Library

1,311packages depend

7Mdownloads / year

39.3%test coverage

13/13checks pass

Overview

About

Maintained by Dirk EddelbuettelFirst published 2010-03-11190 releasesCRAN page ↗GitHub ↗

'Armadillo' is a templated C++ linear algebra library aiming towards a good balance between speed and ease of use. It provides high-level syntax and functionality deliberately similar to Matlab. It is useful for algorithm development directly in C++, or quick conversion of research code into production environments. It provides efficient classes for vectors, matrices and cubes where dense and sparse matrices are supported. Integer, floating point and complex numbers are supported. A sophisticated expression evaluator (based on template meta-programming) automatically combines several operations to increase speed and efficiency. Dynamic evaluation automatically chooses optimal code paths based on detected matrix structures. Matrix decompositions are provided through integration with LAPACK, or one of its high performance drop-in replacements (such as 'MKL' or 'OpenBLAS'). It can automatically use 'OpenMP' multi-threading (parallelisation) to speed up computationally expensive operations. The 'RcppArmadillo' package includes the header files from the 'Armadillo' library; users do not need to install 'Armadillo' itself in order to use 'RcppArmadillo'. Starting from release 15.0.0, the minimum compilation standard is C++14. Since release 7.800.0, 'Armadillo' is licensed under Apache License 2; previous releases were under licensed as MPL 2.0 from version 3.800.0 onwards and LGPL-3 prior to that; 'RcppArmadillo' (the 'Rcpp' bindings/bridge to Armadillo) is licensed under the GNU GPL version 2 or later, as is the rest of 'Rcpp'.

Install

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

install.packages("RcppArmadillo", 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("RcppCore/RcppArmadillo")

Development version from RcppCore/RcppArmadillo. 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-rcpparmadillo

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-RcppArmadillo

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-RcppArmadillo

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

Health

CRAN checks

13OK

Slowest check: 7.4 min · r-devel-linux-x86_64-fedora-gcc

Code health

Yes

Tests · ratio 0.01

39.3%

Coverage · measured lines

100%

Documentation · exports

None

Vignettes

Yes

README

Dependencies · direct

Check history

OK2026-04-25
12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
10 OK · 3 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-03-10
11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Downloads

CRAN downloads in the past year

Rank #105 · ~19.1K/day · ~580.2K/mo

Releases R versions

Daily download trend is not available in this view yet.

579.9K30 days

2M90 days

7M1 year

Compare downloads with other packages →

Also on87.8K r2u223 autocran456.7K conda_forge3.1K c2d4u

Repository

GitHub ↗ rcppcore/rcpparmadillo

210Stars

55Forks

6Open issues

0Open PRs

0Releases

rrcppc-plus-plusarmadillorcpparmadillor-package

Stars over time

2025-05-22 · 2022026-07-07 · 210

Dependencies

Declared dependencies

6 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.3.0

Imports (4)

Rcppstatsutilsmethods

LinkingTo (1)

Rcpp

Suggests (5)

tinytestMatrixpkgKitten reticulate slam

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

1,311direct

2,546indirect

and 1,332 more packages.

Code & Tests

Code Composition

R 503 (45%)Rd 356 (32%)C++ 252 (22%)Other 10 (1%)

Code characteristics

Object systems

S36

Cyclomatic complexity: 1.0 median / 16 max
Test cases: 325 / 0.01 per code line
Documented parameters: 99%

Test coverage

Line coverage

39%

Expression

38.9%

Tests / Examples

39.3% / 40% ex

Functions

39 11 exported

Complexity

2 avg / 16 max

Call network

39 nodes / 14 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

39 functions

Function	Cyclo	Coverage
fastLm exp	1	100%
fastLmPure exp	1	100%
CxxFlags	1	100%
RcppArmadilloCxxFlags	1	100%
fastLm.default	1	100%
fastLm.formula	1	100%

People & History

People (5)

Maintainer (1)

Dirk Eddelbuettel

Author, Maintainer

Authors (5)

Author, Maintainer

Author

Author

Author

Author

Release timeline

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

15.4.0-1Latest
2026-06-19 · current release · diff ↗
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R 4.6.0 released · 2026-04-24
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R 2.12.0 released · 2010-10-15
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R 2.11.0 released · 2010-04-22
0.1.0
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R 2.10.0 released · 2009-10-26

Package metadata

First published: 2010-03-11
Total releases: 190 / 16 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.3.0
Download size: 2.0 MB
Installed size: not tracked yet
With dependencies: not tracked yet