小编Tye*_*oga的帖子

经验丰富但不是 Graphviz 专家。

我分享的示例代码和图像是更大图表的一部分，我将其拉出来以使问题和示例更清晰。

该图是按等级分开的并且从左到右流动。在图像示例中，您可以看到三个等级和节点空间很好，但我想在子图中收紧它们。

我已经尝试了六种语法选项，但它们都不允许我缩小子图中节点之间的垂直距离，而其他地方则不允许。

不确定如何将节点隔离到子图集群。

感谢您的任何帮助。

digraph G {
    
    graph   [rankdir=LR, ranksep=.8, nodesep=.25];
    edge    [dir=forward, color=black];
    node    [shape=rectangle, fontsize=12, fontname="Times-Roman", height=.45];
    
    {edge [color=firebrick1]    v_Automobile    ->{"Locational"; "Consumption"; "Governmental"};};
    {edge [color=blue2]         v_Body          ->{"BioMetric"; "Networked IoT"; "Medical"};};
    {edge [color=darkviolet]    v_Citizen       ->{"Associative"; "Conversaional"; "Governmental"; "Political"};};
    {edge [color=lightskyblue]  v_Consumer      ->{"Consumption"; "Educational"; "Employment"; "Governmental"; "Locational"; "Medical"; "Transactional"};};
    {edge [color=crimson]       v_Home          ->{"Consumption"; "Emanative"; "Locational"; "Networked IoT"};};
    
    {edge [color=blue2]         "BioMetric"     ->{SP_Camera; SP_Apps; "CCTV"};};
    {edge [color=crimson]       "Consumption"   ->"Smart Meter"};
    {edge [color=blue2]         "Medical"       ->SP_Apps};
    {edge [color=darkviolet]    "Political"     ->"Ballot"}; …