patchwork draws clustered graphs using a squarified treemap layout.
patchwork takes any graph in the dot format.
Each cluster is given an area based on the areas specified by the clusters and
nodes it contains. The areas of nodes and empty clusters can be specified by
area attribute. The default
The root graph is laid out as a square. Then, recursively, the region of a cluster or graph is partitioned among its top-level nodes and clusters, with each given a roughly square subregion with its specified area.