Undirected Graph Clusters

The fdp layout program supports edges between nodes and clusters and cluster-to-cluster. To make edges with clusters as endpoints, fdp relies on the convention that both nodes and cluster subgraphs have identifical names with the prefix cluster, as shown in the example.

[Input .gv File] [SVG] [Raster Image]

graph G {
  fontname="Helvetica,Arial,sans-serif"
  node [fontname="Helvetica,Arial,sans-serif"]
  edge [fontname="Helvetica,Arial,sans-serif"]
  layout=fdp
  e
  subgraph clusterA {
    a -- b;
    subgraph clusterC {
      C -- D;
    }
  }
  subgraph clusterB {
    d -- f
  }
  d -- D
  e -- clusterB
  clusterC -- clusterB
}

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