Get and set vertex and edge attributes

Usage

Vattr(graph, name)

Vattr(graph, name) <- value

Eattr(graph, name)

Eattr(graph, name) <- value

V(graph)

E(graph)

graph: igraph_ptr object.
name: Name of the attribute to query or set. If missing, all the attributes are returned or replaced.
value: A vector or data.frame.