reverseEdgeDirections: Reverse the edges of a directed graph

Description Usage Arguments Details Value Author(s) Examples

View source: R/reverseEdgeDirections.R

Description

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

Usage

1

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

Author(s)

S. Falcon

Examples

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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"))

vjcitn/graph documentation built on Dec. 23, 2021, 4:06 p.m.