Assign edge orientation of an undirected graph through a given reference directed graph. The vertex (color) and edge (color, width and weight) attributes of the input undirected graph are preserved in the output directed graph.
orientEdges(ug, dg, ...)Arguments
- ug
An undirected graph as an igraph object.
- dg
A directed reference graph.
- ...
Currently ignored.
Value
A directed graph as an igraph object.
Examples
# Graphs definition
G0 <- as.undirected(sachs$graph)
# Reference graph-based orientation
G1 <- orientEdges(ug = G0, dg = sachs$graph)
# Graphs plotting
old.par <- par(no.readonly = TRUE)
par(mfrow=c(1,2), mar=rep(2,4))
plot(G0, layout=layout.circle, main = "Input undirected graph")
plot(G1, layout=layout.circle, main = "Output directed graph")
par(old.par)