How to control node labels in Sankey diagram

问题

I have a Sankey diagram I'm creating in R. It produces the diagram but the node names are placed on the left of the nodes for the right side nodes. I would like all names to be on the right so the real names (which are longer) don't overlap with each other.

Below is a complete set of working code that will generate the diagram I am currently working with.

library(networkD3)

nodes <- data.frame('name' = 
c('Node0','Node1','Node2','Node3','Node4','Node5','Node6',                   
'Node7','Node8','Node9','Node10','Node11','Node12','Node13',
'Node14','Node15','Node16','Node17','Node18','Node19',
'Node20','Node21','Node22','Node23','Node24','Node25',
'Node26','Node27','Node28','Node29','Node30','Node31',
'Node32','Node33'))

links = as.data.frame(matrix(c(
  0, 3,140,
  0, 4,140,
  0, 5,140,
  0, 6,140,
  1, 3,140,
  1, 4,140,
  1, 5,140,
  1, 6,140,
  2, 3,140,
  2, 4,140,
  2, 5,140,
  2, 6,140,
  3, 7,130,
  3, 8,130,
  3, 9,50,
  3,10,50,
  3,11,50,
  4,12,140,
  4,13,100,
  4,14,100,
  4,15,80,
  5,16,150,
  5,17,150,
  5,18,60,
  5,19,60,
  6,20,180,
  6,21,80,
  6,22,80,
  6,23,80,
  7,24,13,
  7,33,13,
  7,31,104,
  8,24,13,
  8,33,13,
  8,26,52,
  8,27,52,
  9,24,10,
  9,33,10,
  9,29,30,
  9,30,30,
  10,24,10,
  10,33,10,
  10,29,30,
  10,30,30,
  11,24,10,
  11,33,10,
  11,29,30,
  11,30,30,
  12,24,16,
  12,33,16,
  12,26,36,
  12,27,36,
  12,28,36,
  13,24,10,
  13,33,10,
  13,26,30,
  13,27,30,
  13,28,30,
  14,24,10,
  14,33,10,
  14,26,30,
  14,27,30,
  14,28,30,
  15,24,10,
  15,33,10,
  15,31,60,
  16,24,30,
  16,33,30,
  16,32,90,
  17,24,30,
  17,33,30,
  17,32,90,
  18,24,10,
  18,33,10,
  18,25,40,
  19,24,30,
  19,33,30,
  20,24,90,
  20,33,90,
  21,33,80,
  22,24,10,
  22,33,10,
  22,29,30,
  22,30,30,
  23,24,40,
  23,33,40),
byrow = TRUE, ncol = 3))

names(links) = c("source", "target", "value")
sankeyNetwork(Links = links, Nodes = nodes,
              Source = "source", Target = "target",
              Value = "value", NodeID = "name",
              fontSize= 15, nodeWidth = 20,
              colourScale = JS("d3.scaleOrdinal(d3.schemeCategory20b);"))

回答1:

You can set the text-anchor after creating the sankey network plot by adding some JavaScript using the htmlwidgets package. You may also want to adjust the left margin if you want the text to be on right side of the right side nodes.

library(htmlwidgets)

sn <- sankeyNetwork(Links = links, Nodes = nodes,
                    Source = "source", Target = "target",
                    Value = "value", NodeID = "name",
                    fontSize= 15, nodeWidth = 20, margin = list(left = 100),
                    colourScale = JS("d3.scaleOrdinal(d3.schemeCategory20b);"))

onRender(
  sn,
  '
  function(el, x) {
    d3.selectAll(".node text").attr("text-anchor", "begin").attr("x", 20);
  }
  '
)

来源：https://stackoverflow.com/questions/45720125/how-to-control-node-labels-in-sankey-diagram

标签

d3.js

sankey-diagram

htmlwidgets

networkd3