- here is the place to make enhancement requests & bug reports Issues · graphviz / graphviz · GitLab. But there is quite a backlog, do not hold your breath for an enhancement
- nodesep is probably the worst way to produce a “good” graph, all the nodes are affected
- margin applied to the two clusters might be a bit better, but not much
- the underlying problem is caused by the wide cluster labels. They cause cluster bounding-boxes that are much wider that required by the enclosed graph. Quite “legal”, but Graphviz does not have a “center graph within the cluster bounding box” option.
- Below is a “pretty good” solution that :
- adds 2 new levels of clusters
- explicitly sets rank for a new subgraph containing root
- sets constraint=false for some edges
Note that the two side-by-side clusters have flipped left & right. If that is a problem, try reversing the order within the file or adding another enclosing cluster
digraph G {
bgcolor="gray"
node [
style=filled
shape="circle"
fillcolor="green4"
penwidth="2"
color="green1"
fontcolor="white"
]
{
rank=source
root [
shape="box"
color="white"
fontcolor="white"
label="hello"
]
}
subgraph clusterXXX{
peripheries=0
AAA_1 [
label="AAA"
]
BBB_2 [
label="BBB"
]
subgraph cluster_ccc {
color=gray
fillcolor="blue"
style=filled
label="ccccc"
labelloc=b
fontcolor="white"
labeljust=l
peripheries=1
subgraph cluster_south_a {
label="aaaaaaaaaaaaaaaaaaaaaa"
subgraph cluster_south_a1 {
label="" peripheries=0
5 [ label="" fillcolor="red" ]
6 [ label="" fillcolor="red" ]
5 -> 6
}
}
subgraph cluster_south_b {
label="bbbbbbbbbbbbbbbbbbbbbb"
subgraph cluster_south_b1 {
label="" peripheries=0
7 [ label="" fillcolor="red" ]
8 [ label="" fillcolor="red" ]
9 [ label="" fillcolor="red" ]
10 [ label="" fillcolor="red" ]
7 -> 8
7 -> 8
7 -> 9
8 -> 9
8 -> 10
9 -> 10
}
}
}
}
{
edge [constraint=false]
root -> AAA_1
root -> BBB_2
}
AAA_1 -> 7
BBB_2 -> 5
}
Giving:
