Fixing the order of a Sankey flow graph in R / networkD3 package

Question

I would like to visualize a rank change (i.e. change of the relative order) of US states using a Sankey flow graph. I\'m using the networkd3 package and came up with the fol

Answer 1

If you set iterations = 0 in sankeyNetwork(), you will effectively disable the algorithm which automatically determines the node placement (which is the primary purpose of the sankeyNetwork() function), and the nodes will be placed in the order that they appear in the Nodes dataframe.

library(networkD3)

states <- state.name[1:10]
ranks <- sample.int(10)

nodes <- data.frame(name = c(states, states[ranks]))
links <- data.frame(source = 1:10 - 1, target = order(ranks) + 10 - 1, value = 1)

sankeyNetwork(Links = links, Nodes = nodes, Source = 'source', 
              Target = 'target', Value = 'value', NodeID = 'name',
              iterations = 0)