reverseEdgeDirections: Reverse the edges of a directed graph
In vjcitn/graph: graph: A package to handle graph data structures

Description Usage Arguments Details Value Author(s) Examples

Return a new directed graph instance with each edge oriented in the opposite direction relative to the corresponding edge in the input graph.

1	reverseEdgeDirections(g)

`g`	A `graph` subclass that can be coerced to `graphAM`

WARNING: this doesn't handle edge attributes properly. It is a preliminary implementation and subject to change.

A graphNEL instance

S. Falcon

g <- graphNEL(nodes=c("a", "b", "c"),
         edgeL=list(a=c("b", "c"), b=character(0), c=character(0)),
         edgemode="directed")

stopifnot(isAdjacent(g, "a", "b"))
stopifnot(!isAdjacent(g, "b", "a"))

grev <- reverseEdgeDirections(g)
stopifnot(!isAdjacent(grev, "a", "b"))
stopifnot(isAdjacent(grev, "b", "a"))