igraph v0.5.3


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


Date Nov 22, 2009
License GPL (>= 2)
URL http://igraph.sourceforge.net
Packaged 2009-11-22 12:32:44 UTC; csardi
Repository CRAN
Date/Publication 2009-11-22 16:20:35

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