使用graphviz绘制晶格时，如何在节点上强加y位置？

Question

我使用Graphviz绘制格子 节点是一组数字。

作为一个点阵，我希望节点的高度位置（y）表示节点所代表的集合中的元素数量。那么x位置应该由graphviz定义，以使表示更清晰。

有可能吗？

根据点文档，应该有属性pos，它应该定义节点的位置。但是，尽管我以许多不同的方式尝试了很多次，但我无法获得定义节点位置的任何图形。有没有人对此有任何成功？

以下是我使用的经典点文件：

digraph G {
"528 544\n640 768" -> "768 528"; 
"528 536\n530 539" -> "539"; 
"528 536\n530 539" -> "528"; 
"800 896 548\n944 566 728\n539 704 768" -> "704 768\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" -> "∅"; 
"944" -> "∅"; 
"944 528 536\n530 566 560\n728 656 539" -> "528 536\n530 539"; 
"944 528 536\n530 566 560\n728 656 539" -> "944 728\n539 566"; 
"944 528 536\n530 566 560\n728 656 539" -> "944 656\n528 560"; 
"704 768\n539 548" -> "768 539"; 
"944 728\n539 566" -> "944"; 
"944 728\n539 566" -> "539"; 
"800 896 640\n944 560 528\n544 656 768" -> "528 544\n640 768"; 
"800 896 640\n944 560 528\n544 656 768" -> "944 656\n528 560"; 
"800 896 640\n944 560 528\n544 656 768" -> "944 800\n896 768"; 
"539" -> "∅"; 
"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" -> "944 528 536\n530 566 560\n728 656 539"; 
"896 640 656 536\n530 728 539 704\n768 800 544 528\n548 944 566 560" -> "800 896 640\n944 560 528\n544 656 768"; 
"896 640 656 536\n530 728 539 704\n768 800 544 528\n548 944 566 560" -> "768 704 548\n528 530 544\n536 640 539"; 
"768 528" -> "768"; 
"768 528" -> "528"; 
"528" -> "∅"; 
"768 704 548\n528 530 544\n536 640 539" -> "528 544\n640 768"; 
"768 704 548\n528 530 544\n536 640 539" -> "704 768\n539 548"; 
"768 704 548\n528 530 544\n536 640 539" -> "768 528 530\n539 536"; 
"944 800\n896 768" -> "768"; 
"944 800\n896 768" -> "944"; 
"768 528 530\n539 536" -> "528 536\n530 539"; 
"768 528 530\n539 536" -> "768 539"; 
"768 528 530\n539 536" -> "768 528"; 
}

如果有人可以编写一个文件的例子，其中定义了一个节点的高度，我将非常感激。

Answer 1

我找到了答案。

下面： http://www.linuxdevcenter.com/pub/a/linux/2004/05/06/graphviz_dot.html?page=2

基本上，可以定义哪些节点集应该在同一高度。 要使节点A和B处于同一高度，我需要添加以下行：     {秩=相同; A B};

所以这里是一个类似前面的例子，但节点设置正确：

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" -> "∅"; 
"944" -> "∅"; 
"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" -> "∅"; 
"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" -> "∅"; 
"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"; 
}