I am trying to find a good method to build Relationship Diagrams. So a tool or other method that can automatically generate a diagram showing the relationships between NPCs. When I say relationships, I don't mean a simple pedigree diagram. It would have connecting lines for friendships et cetera.
If you know of an article that gives tips on how to make these manually, I'd be open to that as well.
I'm not looking for something fancy, in fact if it were php code I'd be happy.
If this a specific type of relationship diagram, please let me know that as well.