def graph(self, new_graph):
if isinstance(new_graph, GraphLib):
self._graph = GraphObject.to_graph_object(new_graph)
elif isinstance(new_graph, GraphObject):
self._graph = new_graph
else:
raise TypeError("The object passed is not a \
GraphObject but a {}".format(new_graph.__class__.__name__))
def __init__(self, nodes=0, name="Graph",
weighted=True, directed=True, libgraph=None, **kwargs):
'''
Initialize Graph instance
Parameters
----------
nodes : int, optional (default: 0)
Number of nodes in the graph.
name : string, optional (default: "Graph")
The name of this :class:`Graph` instance.
weighted : bool, optional (default: True)
Whether the graph edges have weight properties.
directed : bool, optional (default: True)
Whether the graph is directed or undirected.
libgraph : :class:`~nngt.core.GraphObject`, optional
An optional :class:`~nngt.core.GraphObject` to serve as base.
Returns
-------
self : :class:`~nggt.core.Graph`
'''
self.__id = self.__class__.__max_id
self._name = name
self._directed = directed
self._edges = []
# create the graphlib graph
if libgraph is not None:
self._graph = GraphObject.to_graph_object(libgraph)
else:
self._graph = GraphObject(nodes=nodes, directed=directed)
# take care of the weights @todo: use those of the libgraph
if weighted:
if "weight_prop" in kwargs.keys():
self._w = kwargs["weight_prop"]
else:
self._w = {"distrib": "constant"}
self.set_weights()
# update the counters
self.__class__.__num_graphs += 1
self.__class__.__max_id += 1