igraph

Overview

About

Maintained by Kirill MüllerFirst published 2006-03-0183 releasesCRAN page ↗GitHub ↗

Routines for simple graphs and network analysis. It can handle large graphs very well and provides functions for generating random and regular graphs, graph visualization, centrality methods and much more.

Install

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

install.packages("igraph", 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("igraph/rigraph")

Development version from igraph/rigraph. 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-igraph

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-igraph

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-igraph

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: 22.2 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.63

59.7%

Coverage · measured lines

99%

Documentation · exports

12

Dependencies · direct

Check history

NOTE2026-07-11
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-07-03
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-20
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-06-01
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-05-30
11 OK · 0 NOTE · 1 WARNING · 1 ERROR · 0 FAILURE

Show 8 earlier snapshots

WARNING2026-05-17
11 OK · 0 NOTE · 2 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-05-15
11 OK · 0 NOTE · 1 WARNING · 1 ERROR · 0 FAILURE
WARNING2026-05-13
12 OK · 0 NOTE · 1 WARNING · 0 ERROR · 0 FAILURE
OK2026-05-02
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-25
11 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-04-11
11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
WARNING2026-03-21
6 OK · 7 NOTE · 1 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-03-10
11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesYes · dynamicpkgdown siteNoNEWSYes · 67% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 96%
Return-value docs: 52%
References docs: 16%

Downloads

6.5M

CRAN downloads in the past year

Rank #102 · ~17.7K/day · ~538.9K/mo

Releases R versions

Daily download trend is not available in this view yet.

669.9K30 days

2.1M90 days

6.5M1 year

Compare downloads with other packages →

Also on50.3K r2u254 autocran309.8K conda_forge677 c2d4u

Repository

GitHub ↗ igraph/rigraph

618Stars

208Forks

90Open issues

52Open PRs

30Releases

6,719Commits

82Contributors

complex-networksgraph-algorithmsgraph-theorymathematicsnetwork-analysisnetwork-graphr

6,719 commits · Last activity 2026-07-18 · +0.8% stars, 30d

Stars over time

2025-07-19 · 5872026-07-14 · 618

Repository practices

Upstream repositoryBeta

14 development-tooling and community-health practices detected across 8 families in the upstream repository

Checks run against github.com/igraph/rigraph on 2026-07-19.

Continuous integration (1)

GitHub Actions

Reproducibility and dev environment (1)

Makefile

CRAN release process (2)

cran-comments.mdrevdep/

Research and citation (2)

CITATION.cffZenodo

Show all practices

Lint, format, editor (3)

AirVS CodeRStudio project

Coverage (1)

Codecov

Governance and community (2)

Issue templatesFunding

Git structural (2)

.gitattributesSubmodules

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

Dependencies

Declared dependencies

19 external dependencies (excludes base and recommended)

Depends (2)

R >= 3.5.0methods

Imports (11)

cligraphicsgrDeviceslifecycle magrittrMatrixpkgconfig rlangstatsutilsvctrs

LinkingTo (1)

cpp11

Suggests (14)

ape callr decor digest igraphdata knitr rgl rmarkdown scalesstats4tcltktestthat vdiffr withr

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

996direct

605indirect

and 948 more packages.

Code & Tests

Code Composition

C 413,448 (68%)R 99,087 (16%)Rd 42,342 (7%)C++ 29,299 (5%)Markdown 13,765 (2%)Fortran 12,337 (2%)Vignettes 1,327 (0%)

Code characteristics

Object systems

S385

Cyclomatic complexity: 1.0 median / 72 max
Test cases: 1,513 / 0.63 per code line
System requirements: 3 external

Test coverage

Line coverage

60%

Expression

58.6%

Tests / Examples

59.7% / 44% ex

Functions

7994 818 exported

Complexity

3 avg / 72 max

Call network

7994 nodes / 19783 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

7994 functions

Function	Cyclo	Coverage
%c% exp	1	0%
%m% exp	1	0%
%s% exp	1	0%
.from exp	1	0%
.inc exp	1	0%
.innei exp	1	0%

People & History

People (12)

Maintainer (1)

Kirill Müller

Author, Maintainer · added in 1.4.2

Authors (9)

Kirill Müller

Author, Maintainer · added in 1.4.2

Gábor Csárdi

Author · added in 1.4.2

Szabolcs Horvát

Author · added in 1.4.2

Tamás Nepusz

Author · added in 1.4.2

Daniel Noom

Author · added in 1.4.2

Maëlle Salmon

Author · added in 1.4.2

David Schoch

Author · added in 2.2.0

Vincent Traag

Author · added in 1.4.2

Fabio Zanini

Author · added in 1.4.2

Contributors (1)

Michael Antonov

Contributor · added in 2.0.1

Funders (2)

Chan Zuckerberg Initiative

Funder · added in 1.4.2

R Consortium

Funder · added in 2.3.0

Listed in earlier versions (2)

Gabor Csardi

no longer listed · 0.1.1 to 0.6-2

See AUTHORS file.

no longer listed · 0.6-3 to 1.4.1

Package Timeline

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

2.3.3Latest
2026-06-26 · current release · diff ↗
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Package metadata

First published: 2006-03-01
Total releases: 83 / 20 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.5.0
Download size: 4.9 MB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

Graphical Models Network Analysis Optimization and Mathematical Programming