igraph v0.5.5-3


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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
graph.lcf Creating a graph from LCF notation
layout.drl The DrL graph layout generator
similarity Similarity measures of two vertices
closeness Closeness centrality of vertices
betweenness Vertex and edge betweenness centrality
graph.famous Creating named graphs
Graphs from adjacency lists Create graphs from adjacency lists
graph.maxflow Maximum flow in a network
graph.density Graph density
evcent Find Eigenvector Centrality Scores of Network Positions
line.graph Line graph of a graph
modularity Modularity of a community structure of a graph
plot.bgraph Plot graphs and their cohesive block hierarchy
graph.laplacian Graph Laplacian
kleinberg Kleinberg's centrality scores.
is.multiple Find the multiple or loop edges in a graph
plot.igraph Plotting of graphs
graph.kautz Kautz graphs
is.igraph Is this object a graph?
forest.fire.game Forest Fire Network Model
Drawing graphs Drawing graphs
graph-motifs Graph motifs
graph.graphdb Load a graph from the graph database for testing graph isomorphism.
graph-operators Graph operators
minimum.spanning.tree Minimum spanning tree
graph-isomorphism Graph Isomorphism
topological.sort Topological sorting of vertices in a graph
traits Graph generation based on different vertex types
triad.census Triad census, subgraphs with three vertices
attributes Graph, vertex and edge attributes
cliques The functions find cliques, ie. complete subgraphs in a graph
layout Generate coordinates for plotting graphs
bipartite.projection Project a bipartite graph
clusters Connected components of a graph
components In- or out- component of a vertex
graph.data.frame Creating igraph graphs from data frames
conversion Convert a graph to an adjacency matrix or an edge list
fastgreedy.community Community structure via greedy optimization of modularity
girth Girth of a graph
graph.bipartite Create a bipartite graph
is.bipartite Decide whether a graph is bipartite
read.graph Reading foreign file formats
rewire.edges Rewires the endpoints of the edges of a graph randomly
as.directed Convert between directed and undirected graphs
degree.sequence.game Generate random graphs with a given degree sequence
walktrap.community Community strucure via short random walks
print.igraph Print graphs to the terminal
preference.game Trait-based random generation
structure.info Gaining information about graph structure
write.graph Writing the graph to a file in some format
igraph from/to graphNEL conversion Convert igraph graphs to graphNEL objects or back
constraint Burt's constraint
edge.betweenness.community Community structure detection based on edge betweenness
transitivity Transitivity of a graph
graph.adjacency Create graphs from adjacency matrices
subgraph Subgraph of a graph
rglplot 3D plotting of graphs with OpenGL
graph.strength Strength or weighted vertex degree
neighborhood Neighborhood of graph vertices
aging.prefatt.game Generate an evolving random graph with preferential attachment and aging
tkplot Interactive plotting of graphs
independent.vertex.sets Independent vertex sets
get.incidence Incidence matrix of a bipartite graph
power.law.fit Fitting a power-law distribution function to discrete data
leading.eigenvector.community Community structure detecting based on the leading eigenvector of the community matrix
igraph-package The igraph package
canonical.permutation Canonical permutation of a graph
bonpow Find Bonacich Power Centrality Scores of Network Positions
cohesive.blocks Calculate Cohesive Blocks
get.adjlist Adjacency lists
diameter Diameter of a graph
grg.game Geometric random graphs
vertex.connectivity Vertex connectivity.
label.propagation.community Finding communities based on propagating labels
layout.star Generate coordinates to place the vertices of a graph in a star-shape
graph.formula Creating (small) graphs via a simple interface
alpha.centrality Find Bonacich alpha centrality scores of network positions
graph.knn Average nearest neighbor degree
running.mean Running mean of a time series
growing.random.game Growing random graph generation
simplify Simple graphs
write.pajek.bgraph Write graphs and their cohesive block hierarchy as Pajek files
cocitation Cocitation coupling
decompose.graph Decompose a graph into components
graph.de.bruijn De Bruijn graphs.
igraph.sample Sampling a random integer sequence
Vertex shapes Various vertex shapes when plotting igraph graphs
watts.strogatz.game The Watts-Strogatz small-world model
communities Common functions supporting community detection algorithms
dyad.census Dyad census of a graph
edge.connectivity Edge connectivity.
graph.full.bipartite Create a full bipartite graph
graph.coreness K-core decomposition of graphs
igraph-parameters Parameters for the igraph package
is.mutual Find mutual edges in a directed graph
reciprocity Reciprocity of graphs
rewire Graph rewiring
barabasi.game Generate scale-free graphs according to the Barabasi-Albert model
biconnected.components Biconnected components
arpack ARPACK eigenvector calculation
erdos.renyi.game Generate random graphs according to the Erdos-Renyi model
graph.incidence Create graphs from an incidence matrix
permute.vertices Permute the vertices of a graph
spinglass.community Finding communities in graphs based on statistical meachanics
tkigraph Experimental basic igraph GUI
page.rank The Page Rank algorithm
graph.automorphisms Number of automorphisms
articulation.points Articulation points of a graph
degree Degree and degree distribution of the vertices
graph.constructors Various methods for creating graphs
graph.structure Method for structural manipulation of graphs
iterators Vertex and edge sequences and iterators
layout.merge Merging graph layouts
shortest.paths Shortest (directed or undirected) paths between vertices
unfold.tree Convert a general graph into a forest
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Last month downloads


Date Oct 18 , 2011
License GPL (>= 2)
URL http://igraph.sourceforge.net
SystemRequirements gmp, libxml2
Packaged 2011-10-19 00:30:59 UTC; gaborcsardi
Repository CRAN
Date/Publication 2011-10-20 08:47:43

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