如何将节点定位在neato图的顶部？

Question

是否有可能强制graphviz在此图顶部放置节点＆＃34; a＆＃34; ？我尝试过 neato 和 fdp 。

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Answer 1

如果您想使用neato，可以尝试使用pos属性：

digraph G {
    "a" [pos="0,2!"];
    "b";
    "c";
    "d";
    "e";
    "a" -> "b";
    "a" -> "d";
    "a" -> "a";
    "b" -> "c";
    "c" -> "d";
    "d" -> "e";
    "e" -> "a";
}

使用dot布局时，您可以围绕边缘方向切换，以确保a保持在最顶层：

digraph G {
    "a";
    "b";
    "c";
    "d";
    "e";
    "a" -> "b";
    "a" -> "d";
    "a" -> "a";
    "b" -> "c";
    "c" -> "d";
    "d" -> "e";
    "a" -> "e" [dir=back];
}