| motifs {igraph} | R Documentation |
Graph motifs
Description
Graph motifs are small connected induced subgraphs with a well-defined structure. These functions search a graph for various motifs.
Usage
motifs(graph, size = 3, cut.prob = rep(0, size))
Arguments
graph |
Graph object, the input graph. |
size |
The size of the motif, currently sizes 3 and 4 are supported in directed graphs and sizes 3-6 in undirected graphs. |
cut.prob |
Numeric vector giving the probabilities that the search
graph is cut at a certain level. Its length should be the same as the size
of the motif (the |
Details
motifs() searches a graph for motifs of a given size and returns a
numeric vector containing the number of different motifs. The order of
the motifs is defined by their isomorphism class, see
isomorphism_class().
Value
motifs() returns a numeric vector, the number of occurrences of
each motif in the graph. The motifs are ordered by their isomorphism
classes. Note that for unconnected subgraphs, which are not considered to be
motifs, the result will be NA.
See Also
Other graph motifs:
count_motifs(),
dyad_census(),
sample_motifs()
Examples
g <- sample_pa(100)
motifs(g, 3)
count_motifs(g, 3)
sample_motifs(g, 3)