Straight edge between clusters in Graphviz
You can use this version :
digraph G {
subgraph cluster_X {
A [ pos = "0,1!" ];
B [ pos = "0,0!" ];
}
subgraph cluster_Y {
C [ pos = "1,1!" ];
D [ pos = "1,0!" ];
}
A -> B
B -> C[label="yadda"]
C -> D;
}
Then you use neato (not dot)
neato -Tpng -oyadda.png yadda.dot
And the result is :
The easiest way to achieve this is to add splines=false
to the dot file - this forces the rendering of the edges to be straight lines:
digraph {
splines=false;
subgraph clusterX {
A;
B;
}
subgraph clusterY {
C;
D;
}
A -> B;
B -> C [constraint=false];
C -> D [label=yadda];
}
Output: