This documents an unmaintained version of NetworkX. Please upgrade to a maintained version and see the current NetworkX documentation.
Source code for networkx.algorithms.operators.unary
"""Unary operations on graphs""" # Copyright (C) 2004-2013 by # Aric Hagberg <email@example.com> # Dan Schult <firstname.lastname@example.org> # Pieter Swart <email@example.com> # All rights reserved. # BSD license. import networkx as nx __author__ = """\n""".join(['Aric Hagberg <firstname.lastname@example.org>', 'Pieter Swart (email@example.com)', 'Dan Schult(firstname.lastname@example.org)']) __all__ = ['complement', 'reverse'][docs]def complement(G, name=None): """Return the graph complement of G. Parameters ---------- G : graph A NetworkX graph name : string Specify name for new graph Returns ------- GC : A new graph. Notes ------ Note that complement() does not create self-loops and also does not produce parallel edges for MultiGraphs. Graph, node, and edge data are not propagated to the new graph. """ if name is None: name = "complement(%s)"%(G.name) R = G.__class__() R.name = name R.add_nodes_from(G) R.add_edges_from( ((n, n2) for n,nbrs in G.adjacency_iter() for n2 in G if n2 not in nbrs if n != n2) ) return R[docs]def reverse(G, copy=True): """Return the reverse directed graph of G. Parameters ---------- G : directed graph A NetworkX directed graph copy : bool If True, then a new graph is returned. If False, then the graph is reversed in place. Returns ------- H : directed graph The reversed G. """ if not G.is_directed(): raise nx.NetworkXError("Cannot reverse an undirected graph.") else: return G.reverse(copy=copy)