cluster
子图是否为集群
类型: bool, 默认值: false
子图集群的渲染方式不同，例如 dot 在子图集群周围渲染一个框，但不会在非子图集群周围绘制框。
示例
digraph cats {
subgraph cluster_big_cats {
// This subgraph is a cluster, because the name begins with "cluster"
"Lion";
"Snow Leopard";
}
subgraph domestic_cats {
// This subgraph is also a cluster, because cluster=true.
cluster=true;
"Siamese";
"Persian";
}
subgraph not_a_cluster {
// This subgraph is not a cluster, because it doesn't start with "cluster",
// nor sets cluster=true.
"Wildcat";
}
}- 集群
- 子图