Sankey plot with bands/links that can change width in R?

Question

Is it possible to make a sankey plot that looks like this in R?

I've played around with the networkD3 package, which works great if the sum of input = sum of output for each node, but I need a solution which supports bands/links that change in size between time periods.

As far as I can work out, networkD3 does not allow me to do this because you must specify the links with a single value (links have a fixed width/value).

Is there anything out there, preferably for R, that can do this?

Answer 1

library(networkD3)

links <- read.csv(header = T, text = "
source,target,value
0,1,50
0,2,50
1,3,50
2,4,25
3,5,75
4,5,25
")

nodes <- data.frame(name = c("A", "A", "B", "A", "B", "A"))

sankeyNetwork(links, nodes, "source", "target", "value", "name")