reverseEdgeDirections

Reverse the edges of a directed graph

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

Keywords
manip
Usage
reverseEdgeDirections(g)
Arguments
g
A graph subclass that can be coerced to graphAM
Details

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

Value

A graphNEL instance

Aliases
  • reverseEdgeDirections
Examples
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"))

Documentation reproduced from package graph, version 1.50.0, License: Artistic-2.0

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