graph (version 1.50.0)

removeEdge: removeEdge

Description

A function to remove the specified edges from a graph.

Usage

removeEdge(from, to, graph)

Arguments

from

from edge labels

to

to edge labels

graph

a graph object

Value

A new instance of a graph with the same class as graph is returned with the specified edges removed.

Details

A new graph instance is returned with the edges specified by corresponding elements of the from and to vectors removed. If from and to are not the same length, one of them should have length one. All edges to be removed must exist in graph.

See Also

addNode,addEdge,removeNode

Examples

  V <- LETTERS[1:4]
  edL1 <- vector("list", length=4)
  names(edL1) <- V
  for(i in 1:4)
    edL1[[i]] <- list(edges=c(2,1,4,3)[i], weights=sqrt(i))
  gR <- graphNEL(nodes=V, edgeL=edL1)

  gX <- removeEdge("A", "B", gR)

  set.seed(123)
  g <- randomEGraph(V=letters[1:5],edges=5)
  g2 <- removeEdge(from=c("a","b"), to=c("d","c"), g)