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jsonrd3.jsdendrogramhclust

How to turn a hclust-object into JSON for D3?

I'm attempting to visualize a cluster tree using this awesome D3 layout! However, it needs data in JSON format - how do I go from a hclust-object in R to a hierarchical JSON structure?

set.seed(123)
m <- matrix(runif(100), nrow=10)
cl <- hclust(dist(m))
plot(cl)

My googling turned up this hclustToTree function which returns a list that looks promising - but I don't really know where to go from there. Any advice would be much appreciated.

halfway <- hclustToTree(cl)
Solution

  • You're almost there:

    jsonTree <- toJSON(halfway)  # part of the RJSONIO library