/* * The transitive 5-net, also known as Petersen's graph, * can be used to test the "stability points" of the layout * algorithm. * * The "ideal" layout is achieved for certain random seed * values when len=1.5. For len=2.5 or above, the layout * is stable. Sometimes, the graph is rendered "inside-out". */ graph "Petersen" { node [ fontname = "Arial" label = "\N" shape = "circle" width = "0.400000" height = "0.400000" color = "black" ] edge [ color = "black" ] /* Outer wheel. The len= is what makes it outer */ "0" -- "1" -- "2" -- "3" -- "4" -- "0" [ color = "blue" len = 2.6 ] "0" -- "5" [ color = "red" weight = "5" ] "1" -- "6" [ color = "red" weight = "5" ] "2" -- "7" [ color = "red" weight = "5" ] "3" -- "8" [ color = "red" weight = "5" ] "4" -- "9" [ color = "red" weight = "5" ] "5" -- "7" -- "9" -- "6" -- "8" -- "5"; }