问题
What ever happend to the d3.js example on this image.
The force directed graph cluster. Second row, 3rd column?
http://vis.stanford.edu/papers/d3
回答1:
I guess what you are interested in is the shapes surrounding groups of nodes.
The following examples implement it :
- force-multi-foci with convex hulls
- alpha-shapes aka concave hulls in d3
Hope this helps,
来源：https://stackoverflow.com/questions/14571538/what-ever-happend-to-the-d3j-s-force-directed-graph-cluster-example-see-on-this