make_line_graph | R Documentation |
This function calculates the line graph of another graph.
make_line_graph(graph)
line_graph(...)
graph |
The input graph, it can be directed or undirected. |
... |
Passed to |
The line graph L(G)
of a G
undirected graph is defined as
follows. L(G)
has one vertex for each edge in G
and two
vertices in L(G)
are connected by an edge if their corresponding
edges share an end point.
The line graph L(G)
of a G
directed graph is slightly
different, L(G)
has one vertex for each edge in G
and two
vertices in L(G)
are connected by a directed edge if the target of
the first vertex's corresponding edge is the same as the source of the
second vertex's corresponding edge.
A new graph object.
Gabor Csardi csardi.gabor@gmail.com, the first version of the C code was written by Vincent Matossian.
# generate the first De-Bruijn graphs
g <- make_full_graph(2, directed = TRUE, loops = TRUE)
make_line_graph(g)
make_line_graph(make_line_graph(g))
make_line_graph(make_line_graph(make_line_graph(g)))
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