A digraph is a directed graph representation which is the same as a Graph except that its header in dot notation has an identifier of digraph instead of graph.
Creates a new Digraph with the params Hash providing settings for all graph options. The option_list parameter restricts those options to the list of valid names it contains. The exception to this is the elements option which, if specified, must be an Enumerable containing a list of nodes, edges, and/or subgraphs.
# File lib/rgl/rdot.rb, line 364 def initialize (params = {}, option_list = GRAPH_OPTS) super(params, option_list) @dot_string = 'digraph' end
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