Making an edge between a node and a subgraph about ruby-graphviz HOT 3 CLOSED

If you try the fdpcplus example (http://www.graphviz.org/Gallery/undirected/fdpclust.html) you will see that it does not work either. As indicated on the example's page, "fdp is being actively worked on, so the probability of hitting a bug is higher than with neato". I think, this is a fdp bug. I'll ask on the graphviz mailing list.

from ruby-graphviz.

Hi,

In the meantime, you can use "compound", "lhead" and "ltail" attributes, to clip the edge to the boundary of a cluster. Here is an example :

g = GraphViz::new( "G", :type => "graph" )
g[:compound] = true
g[:rankdir] = "LR"

c0 = g.add_graph( "cluster0", "label" => "cluster #1"  )
a0 = c0.add_nodes( "a0" )

c1 = g.add_graph( "cluster1", "label" => "cluster #2" )
b0 = c1.add_nodes( "b0" )

e1 = g.add_edges(a0,b0)
e1[:lhead] = c1.id
e1[:ltail] = c0.id

e2 = g.add_edges(a0,b0)
e2[:lhead] = c1.id

For more informations about these attributs, see http://www.graphviz.org/content/attrs

from ruby-graphviz.

That has been confirmed, it is a bug in graphviz 2.28.

from ruby-graphviz.