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[sankey] add ability to pass a node name separate from the node id #10

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Dec 23, 2023
Merged

[sankey] add ability to pass a node name separate from the node id #10

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14 changes: 8 additions & 6 deletions inst/sankey_network.js
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Original file line number Diff line number Diff line change
@@ -1,7 +1,9 @@
// !preview r2d3 data = jsonlite::toJSON(list(links = data.frame(source = c("A", "A"), target = c("B", "C"), value = 10), nodes = data.frame(name = c("A", "B", "C"), group = c("A", "B", "C")))), dependencies = "inst/lib/d3-sankey/d3-sankey.min.js", d3_version = 6, options = list(linkStrokeOpacity=0.3,nodeLabelPadding=6), container = "div", viewer = "internal"
// !preview r2d3 data = jsonlite::toJSON(list(links = data.frame(source = c("A", "A"), target = c("B", "C"), value = c(10,5)), nodes = data.frame(id = c("A", "B", "C"), group = c("A", "B", "C")))), dependencies = "inst/lib/d3-sankey/d3-sankey.min.js", d3_version = 6, options = list(nodeLabel = "id", linkStrokeOpacity = 0.3, nodeLabelPadding = 6), container = "div", viewer = "internal"

r2d3.onRender(function(data, div, width, height, options) {

const nodeId = options.nodeId ?? "id";
const nodeLabel = options.nodeLabel ?? "name";
const nodeAlign = options.nodeAlign ?? "sankeyJustify";
const nodeWidth = options.nodeWidth ?? 24;
const nodePadding = options.nodePadding ?? 8;
Expand Down Expand Up @@ -29,7 +31,7 @@ r2d3.onRender(function(data, div, width, height, options) {
.attr("style", "max-width: 100%; height: auto;");

const sankey = d3.sankey()
.nodeId(d => d.name)
.nodeId(d => d[nodeId])
.nodeAlign(d3[nodeAlign])
.nodeWidth(nodeWidth)
.nodePadding(nodePadding)
Expand Down Expand Up @@ -57,10 +59,10 @@ r2d3.onRender(function(data, div, width, height, options) {

function mouseover(event, d) {
let tooltip_text = "";
if (d.name === undefined) {
tooltip_text = d.source.name + " → " + d.target.name + "<br/>" + format(d.value);
if (d.sourceLinks === undefined) {
tooltip_text = d.source[nodeLabel] + " → " + d.target[nodeLabel] + "<br/>" + format(d.value);
} else {
tooltip_text = d.name + "<br/>" + format(d.value);
tooltip_text = d[nodeLabel] + "<br/>" + format(d.value);
}
tooltip_div.transition()
.duration(tooltipTransitionDuration)
Expand Down Expand Up @@ -105,7 +107,7 @@ r2d3.onRender(function(data, div, width, height, options) {
.attr("y", d => (d.y1 + d.y0) / 2)
.attr("dy", "0.35em")
.attr("text-anchor", d => d.x0 < width / 2 ? "start" : "end")
.text(d => d.name)
.text(d => d[nodeLabel])
.style("font-size", nodeLabelFontSize + "px")
.style("font-family", nodeLabelFontFamily);

Expand Down
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