# File lib/graphviz/theory.rb, line 49
    def degree( node )
      degree = 0
      name = node 
      if node.kind_of?(GraphViz::Node)
        name = node.id
      end
      
      @graph.each_edge do |e|
        degree += 1 if e.node_one(false) == name or e.node_two(false) == name
      end
      
      return degree
    end