isSibling: Are two nodes siblings?
Description
Are two nodes siblings?
Usage
isSibling(this, node1, node2)# S3 method for MixedGraphFixedOrder
isSibling(this, node1, node2)
# S3 method for MixedGraph
isSibling(this, node1, node2)
Value
TRUE if the nodes are siblings in the graph, FALSE otherwise