I am trying to plot a graph using NetworkX draw function but 
using cStringIO.StringIO(). I have read
how to do it in web2py Application Development Cookbook.

Let's say I have something like:

import matplotlib.pyplot as plt
import networkx as nx

G = nx.path_graph(8)
nx.draw(G)
plt.show()

This code plots and shows the graph. Now, to place it in a web2py view I 
should use a function like:


def mygraph()
    fig=Figure()

    .....
    .....
    .....

    canvas=FigureCanvas(fig)
    stream=cStringIO.StringIO()
    canvas.print_png(stream)
    return stream.getvalue()

The problem is how to place the plot generated by nx.path_graph(8) and 
nx.draw(G) in the code in
blue in order to make it work.

I am learning web2py and I am nor expert in NetworkX or matplotlib 
packages. Sorry if my question
is stupid.

Thank you.

-- 
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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