inEdges {graph} | R Documentation

## Generic Method inEdges

### Description

Returns a list of all incoming edges for the specified nodes.

### Usage

    inEdges(node, object)

### Arguments

`node` | character vector of node names
`object` | a `graph` object

### Details

If no `node` argument is specified, `inEdges` returns the incoming edges for all nodes in the graph.

For an undirected graph, `inEdges` returns all edges for the specified nodes.

### Value

A list with length matching the length of `node`. If `node` was missing, a list containing an element for each node in the graph.

Each list element contains a character vector of node names giving the nodes that have outgoing edges to the node given by the name of the list element.

### Author(s)

R. Gentleman

### See Also

`removeNode`, `clearNode`

### Examples

      V <- LETTERS[1:4]
      edL3 <- vector("list", length=4)
      for(i in 1:4)
        edL3[[i]] <- list(edges=(i%%4)+1, weights=i)
      names(edL3) <- V
      gR3 <- graphNEL(nodes=V, edgeL=edL3, "directed")
      inEdges(c("A", "B"), gR3)

[Package graph version 1.68.0 Index]