我找到了答案。
在这里:
http://www.linuxdevcenter.com/pub/a/linux/2004/05/06/graphviz_dot.html?page=2
本质上,可以定义哪些节点集应该处于同一高度。
要使节点A和B的高度相同,我需要添加行:
等级=相同;A B_
因此,这里有一个与以前类似的例子,但是节点设置正确:
digraph G {
{rank=same; "768" "944" "539" "528" };
{rank=same; "768 539" "768 528" };
{rank=same; "768 640\n528 544" "528 536\n530 539" "768 704\n539 548" "944 728\n539 566" "944 656\n528 560" "944 800\n896 768" };
{rank=same; "800 896 548\n944 566 728\n539 704 768" "528 944 536\n530 566 560\n728 656 539" "800 896 944\n656 560 528\n544 640 768" "768 640 548\n528 530 544\n536 539 704" };
"768 640\n528 544" -> "768 528";
"528 536\n530 539" -> "539";
"528 536\n530 539" -> "528";
"800 896 548\n944 566 728\n539 704 768" -> "768 704\n539 548";
"800 896 548\n944 566 728\n539 704 768" -> "944 728\n539 566";
"800 896 548\n944 566 728\n539 704 768" -> "944 800\n896 768";
"768 539" -> "768";
"768 539" -> "539";
"768" -> "â
";
"944" -> "â
";
"528 944 536\n530 566 560\n728 656 539" -> "528 536\n530 539";
"528 944 536\n530 566 560\n728 656 539" -> "944 728\n539 566";
"528 944 536\n530 566 560\n728 656 539" -> "944 656\n528 560";
"768 704\n539 548" -> "768 539";
"944 728\n539 566" -> "944";
"944 728\n539 566" -> "539";
"800 896 944\n656 560 528\n544 640 768" -> "768 640\n528 544";
"800 896 944\n656 560 528\n544 640 768" -> "944 656\n528 560";
"800 896 944\n656 560 528\n544 640 768" -> "944 800\n896 768";
"539" -> "â
";
"944 656\n528 560" -> "944";
"944 656\n528 560" -> "528";
"896 640 656 536\n530 728 539 704\n768 800 544 528\n548 944 566 560" -> "800 896 548\n944 566 728\n539 704 768";
"896 640 656 536\n530 728 539 704\n768 800 544 528\n548 944 566 560" -> "528 944 536\n530 566 560\n728 656 539";
"896 640 656 536\n530 728 539 704\n768 800 544 528\n548 944 566 560" -> "800 896 944\n656 560 528\n544 640 768";
"896 640 656 536\n530 728 539 704\n768 800 544 528\n548 944 566 560" -> "768 640 548\n528 530 544\n536 539 704";
"768 528" -> "768";
"768 528" -> "528";
"528" -> "â
";
"768 640 548\n528 530 544\n536 539 704" -> "768 640\n528 544";
"768 640 548\n528 530 544\n536 539 704" -> "768 704\n539 548";
"768 640 548\n528 530 544\n536 539 704" -> "528 768 530\n539 536";
"944 800\n896 768" -> "768";
"944 800\n896 768" -> "944";
"528 768 530\n539 536" -> "528 536\n530 539";
"528 768 530\n539 536" -> "768 539";
"528 768 530\n539 536" -> "768 528";
}