igraph v0.6.6

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by Gabor Csardi

Network analysis and visualization

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

Functions in igraph

Name Description
biconnected.components Biconnected components
betweenness Vertex and edge betweenness centrality
alpha.centrality Find Bonacich alpha centrality scores of network positions
centralization Centralization of a graph.tmax
is.mutual Find mutual edges in a directed graph
clusters Connected components of a graph
interconnected.islands A graph with subgraphs that are each a random graph.
optimal.community Optimal community structure
kleinberg Kleinberg's centrality scores.
similarity Similarity measures of two vertices
dendPlot.igraphHRG HRG dendrogram plot
barabasi.game Generate scale-free graphs according to the Barabasi-Albert model
revolver Measuring the driving force in evolving networks
k.regular.game Create a random regular graph
fastgreedy.community Community structure via greedy optimization of modularity
components In- or out- component of a vertex
static.fitness.game Random graphs from vertex fitness scores
igraphtest Run package tests
graph-operators Graph operators
arpack ARPACK eigenvector calculation
layout Generate coordinates for plotting graphs
get.incidence Incidence matrix of a bipartite graph
graph.diversity Graph diversity
graph.strength Strength or weighted vertex degree
Drawing graphs Drawing graphs
nexus Query and download from the Nexus network repository
bipartite.projection Project a bipartite graph
maximum.cardinality.search Maximum cardinality search
graph.dfs Depth-first search
diameter Diameter of a graph
constraint Burt's constraint
graph.full.bipartite Create a full bipartite graph
graph.laplacian Graph Laplacian
graph.incidence Create graphs from an incidence matrix
iterators Vertex and edge sequences and iterators
rewire.edges Rewires the endpoints of the edges of a graph randomly
contract.vertices Contract several vertices into a single one
igraphdemo Run igraph demos, step by step
subgraph Subgraph of a graph
traits Graph generation based on different vertex types
multilevel.community Finding community structure by multi-level optimization of modularity
label.propagation.community Finding communities based on propagating labels
Vertex shapes Various vertex shapes when plotting igraph graphs
igraph options Parameters for the igraph package
spinglass.community Finding communities in graphs based on statistical meachanics
get.stochastic Stochastic matrix of a graph
layout.merge Merging graph layouts
static.power.law.game Scale-free random graphs, from vertex fitness scores
graph.maxflow Maximum flow in a network
bonpow Find Bonacich Power Centrality Scores of Network Positions
closeness Closeness centrality of vertices
Spectral coarse graining Spectral Coarse Graining
autocurve.edges Optimal edge curvature when plotting graphs
running.mean Running mean of a time series
topological.sort Topological sorting of vertices in a graph
compare.communities Compares community structures using various metrics
graph.knn Average nearest neighbor degree
subgraph.centrality Find subgraph centrality scores of network positions
plot.igraph Plotting of graphs
permute.vertices Permute the vertices of a graph
graph.bipartite Create a bipartite graph
is.chordal Chordality of a graph
transitivity Transitivity of a graph
structure.info Gaining information about graph structure
tkplot Interactive plotting of graphs
graph.coreness K-core decomposition of graphs
degree Degree and degree distribution of the vertices
community.to.membership Common functions supporting community detection algorithms
igraph.undocumented Undocumented and unsupportted igraph functions
is.degree.sequence Degree sequences of graphs
write.graph Writing the graph to a file in some format
graph.constructors Various methods for creating graphs
igraph-package The igraph package
minimum.spanning.tree Minimum spanning tree
dendPlot Plot dendrograms
preference.game Trait-based random generation
neighborhood Neighborhood of graph vertices
attributes Graph, vertex and edge attributes
eccentricity Eccentricity and radius
conversion between igraph and graphNEL graphs Convert igraph graphs to graphNEL objects or back
print.igraph Print graphs to the terminal
stCuts List all (s,t)-cuts of a graph
evcent Find Eigenvector Centrality Scores of Network Positions
assortativity Assortativity coefficient
cliques The functions find cliques, ie. complete subgraphs in a graph
igraph console The igraph console
infomap.community Infomap community finding
layout.drl The DrL graph layout generator
minimal.st.separators Minimum size vertex separators
decompose.graph Decompose a graph into components
scgGrouping SCG Problem Solver
graph.data.frame Creating igraph graphs from data frames or vice-versa
erdos.renyi.game Generate random graphs according to the Erdos-Renyi model
reciprocity Reciprocity of graphs
get.edge.ids Find the edge ids based on the incident vertices of the edges
graph.lcf Creating a graph from LCF notation
shortest.paths Shortest (directed or undirected) paths between vertices
graph-operators-by-name Graph operators based on symbolic vertex names
articulation.points Articulation points of a graph
unfold.tree Convert a general graph into a forest
watts.strogatz.game The Watts-Strogatz small-world model
read.graph Reading foreign file formats
layout.mds Graph layout by multidimensional scaling
modularity Modularity of a community structure of a graph
graph.bfs Breadth-first search
graph-isomorphism Graph Isomorphism
graph-motifs Graph motifs
graph.kautz Kautz graphs
is.dag Directed acyclic graphs
scgExtra SCG Extra Functions
is.named Named graphs
grg.game Geometric random graphs
leading.eigenvector.community Community structure detecting based on the leading eigenvector of the community matrix
is.weighted Weighted graphs
minimum.size.separators Minimum size vertex separators
tkigraph Experimental basic igraph GUI
page.rank The Page Rank algorithm
is.igraph Is this object a graph?
triad.census Triad census, subgraphs with three vertices
igraph.sample Sampling a random integer sequence
power.law.fit Fitting a power-law distribution function to discrete data
Pie charts as vertices Using pie charts as vertices in graph plots
cohesive.blocks Calculate Cohesive Blocks
graph.graphdb Load a graph from the graph database for testing graph isomorphism.
Hierarchical random graphs Hierarchical random graphs
layout.star Generate coordinates to place the vertices of a graph in a star-shape
graph.adjacency Create graphs from adjacency matrices
canonical.permutation Canonical permutation of a graph
girth Girth of a graph
graph.density Graph density
independent.vertex.sets Independent vertex sets
convex.hull Convex hull of a set of vertices
dyad.census Dyad census of a graph
conversion Convert a graph to an adjacency matrix or an edge list
degree.sequence.game Generate random graphs with a given degree sequence
Graphs from adjacency lists Create graphs from adjacency lists
graph.automorphisms Number of automorphisms
dominator.tree Dominator tree
bipartite.mapping Decide whether a graph is bipartite
graph.de.bruijn De Bruijn graphs.
stMincuts List all minimum $(s,t)$-cuts of a graph
as.directed Convert between directed and undirected graphs
dendPlot.communities Community structure dendrogram plots
layout.sugiyama The Sugiyama graph layout generator
forest.fire.game Forest Fire Network Model
is.separator Vertex separators
walktrap.community Community strucure via short random walks
scgSemiProjectors Semi-Projectors
get.adjlist Adjacency lists
graph.formula Creating (small) graphs via a simple interface
graph.famous Creating named graphs
edge.connectivity Edge connectivity.
layout.grid Simple grid layout
rewire Graph rewiring
cocitation Cocitation coupling
edge.betweenness.community Community structure detection based on edge betweenness
growing.random.game Growing random graph generation
communities Functions to deal with the result of network community detection
graph.matching Graph matching
rglplot 3D plotting of graphs with OpenGL
vertex.connectivity Vertex connectivity.
aging.prefatt.game Generate an evolving random graph with preferential attachment and aging
as.igraph Conversion to igraph
Combining attributes How igraph functions handle attributes when the graph changes
graph.structure Method for structural manipulation of graphs
line.graph Line graph of a graph
is.multiple Find the multiple or loop edges in a graph
scg All-in-one Function for the SCG of Matrices and Graphs
simplify Simple graphs
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Details

Date 2013-10-28
License GPL (>= 2)
URL http://igraph.sourceforge.net
SystemRequirements gmp, libxml2
Packaged 2013-10-28 19:01:56 UTC; gaborcsardi
NeedsCompilation yes
Repository CRAN
Date/Publication 2013-10-28 21:46:12

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