如何將節點放置在neato圖的頂部？

Question

是否可以強制graphviz將節點「a」置於此圖的頂部？我試過neato和fdp。

digraph G { 
    "a"; 
    "b"; 
    "c"; 
    "d"; 
    "e"; 
    "a" -> "b"; 
    "a" -> "d"; 
    "a" -> "a"; 
    "b" -> "c"; 
    "c" -> "d"; 
    "d" -> "e"; 
    "e" -> "a"; 
} 

Answer 1

如果你想使用NEATO，您可以與pos屬性實驗：

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

當使用dot佈局，您可以切換周圍邊緣的方向確保a保持最佳狀態：

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