[erlang-questions] digraph questions

[lloyd@REDACTED]

The Erlang digraph library looks like it may provide an interesting way to diagram scenes in a novel.
 
1> Scene10 = digraph:new().
 
Imagine:
 
Setting:"park"
Character1:"Franco"
Character2:"Sophia"
 
2> digraph:add_vertex(Scene10, "Park", "Night").
3> digraph:add_vertex(Scene10, "Franco", "Old and fat").
4> digraph:add_vertex(Scene10, "Sophia", "Young and beautiful").
5> digraph:add_edge(Scene10, "Franco", "Sophia", "loves").
 
OK to here EXCEPT command 5 returns:
 
['$e'|0]
 
6> digraph:add_edge(Scene10, "Sophia", "Franco", "hates").
 
OK to here EXCEPT command 5 returns:
 
['$e'|0]
 
6> digraph:add_edge(Scene10, "Sophia", "Franco", "hates").
['$e'|1]
 
Wah!
 
Question 1: How do I see labels?
 
Question 2: Be cool to add a sequence of actions. I can probably figure this out, but is there an elegant solution?
 
Question 3: I'd love to visualize the graph. I see it can be done in Elixir. But I don't know Elixir. Has anyone programmed a way to visualize digraphs in Erlang?
 
Comment: Digraph is crying out for a comprehensive tutorial. I'd love to do it, but just don't know enough yet.
 
Many thanks,
 
LRP
 
 
 
 
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