Merge branch 'master' of github.com:maksim2042/PyCon2012

code/presentation_intro.py

@@ -0,0 +1,128 @@
+# -*- coding: utf-8 -*-
+# <nbformat>2</nbformat>
+
+# <codecell>
+
+import networkx as nx
+
+# <codecell>
+
+# Create a graph
+g = nx.Graph()
+
+# <codecell>
+
+# Add some nodes
+g.add_node(1)
+g.add_node(2)
+g.add_nodes_from("asdf")
+
+# <codecell>
+
+# Show the nodes
+g.nodes()
+
+# <codecell>
+
+list(g.nodes_iter())
+
+# <codecell>
+
+# Get information on nodes
+g.nodes?
+
+# <codecell>
+
+# draw the network
+nx.draw(g)
+
+# <codecell>
+
+# add some edges
+g.add_edge(1,2)
+g.add_edge(1,'foo')
+nx.draw(g)
+
+# <codecell>
+
+# Everything in networkx is a dict, so you can treat everything that way
+g.__dict__
+
+# <codecell>
+
+g.node[1]
+# Is an empty dict, so let's add something
+
+# <codecell>
+
+g.node[1]['foobar'] = 1
+g.node[2]['foobar'] = 3
+
+# <codecell>
+
+# add weight
+
+# <codecell>
+
+# undirect graph
+nx.Graph()
+# directed graph
+nx.DiGraph()
+
+# <codecell>
+
+g = nx.small.krackhardt_kite_graph()
+
+# <codecell>
+
+g.node
+
+# <codecell>
+
+g.nodes()
+
+# <codecell>
+
+# agency list
+g.edges()
+
+# <codecell>
+
+nx.draw(g)
+
+# <codecell>
+
+d = nx.to_dict_of_dicts(g)
+# same as 
+# nx.edges
+
+# <codecell>
+
+# Create a new graph from our dict_of_dicts
+g2 = nx.from_dict_of_dicts(d)
+
+# <codecell>
+
+# dumps as a json object
+import simplejson
+simplejson.dumps(nx.to_dict_of_dicts(g))
+
+# <codecell>
+
+import pickle
+s = pickle.dumps(g)
+g3 = pickle.loads(s)
+nx.draw(g3)
+
+# <codecell>
+
+# Write out to pajek to interchange data with other files
+nx.write_pajek(g, 'foo.net')
+!cat foo.net
+
+# <codecell>
+
+
+# <codecell>
+
+