removeNode {graph} | R Documentation

## removeNode

### Description

A function to remove a node from a graph. All edges to and from the node are also removed.

### Usage

    removeNode(node, object)

### Arguments

`node` | The label of the node to be removed.
`object` | The graph to remove the node from.

### Details

The specified node is removed from the graph as are all edges to and from that node. A new instance of the same class as `object` with the specified node(s) is returned.

Note, node can be a vector of labels, in which case all nodes are removed.

This is similar to `subGraph`.

### Value

A new instance of a graph of the same class as `object` but with all specified nodes removed.

### Author(s)

R. Gentleman

### See Also

`removeEdge`, `addEdge`, `addNode`,`subGraph`

### Examples

      V <- LETTERS[1:4]
      edL2 <- vector("list", length=4)
      names(edL2) <- V
      for(i in 1:4)
        edL2[[i]] <- list(edges=c(2,1,2,1)[i], weights=sqrt(i))
      gR2 <- graphNEL(nodes=V, edgeL=edL2, edgemode="directed")
      gX <- removeNode("C", gR2)

[Package graph version 1.62.0 Index]