Published
Edited
Jun 13, 2019
1 star
chart = {
const root = tree(data);
let x0 = Infinity;
let x1 = -x0;
root.each(d => {
if (d.x > x1) x1 = d.x;
if (d.x < x0) x0 = d.x;
});
const svg = d3.create("svg")
.attr("viewBox", [0, 0, width, x1 - x0 + root.dx * 2]);
const g = svg.append("g")
.attr("font-family", "sans-serif")
.attr("font-size", 10)
.attr("transform", `translate(${root.dy / 3},${root.dx - x0})`);
const link = g.append("g")
.attr("fill", "none")
.attr("stroke", "#555")
.attr("stroke-opacity", 0.4)
.attr("stroke-width", 1.5)
.selectAll("path")
.data(root.links())
.join("path")
.attr("d", d => `
M${d.target.y},${d.target.x}
C${d.source.y + root.dy / 2},${d.target.x}
${d.source.y + root.dy / 2},${d.source.x}
${d.source.y},${d.source.x}
`);
const node = g.append("g")
.attr("stroke-linejoin", "round")
.attr("stroke-width", 3)
.selectAll("g")
.data(root.descendants().reverse())
.join("g")
.attr("transform", d => `translate(${d.y},${d.x})`);
node.append("circle")
.attr("fill", d => d.children ? "#555" : "#999")
.attr("r", 2.5);
node.append("text")
.attr("dy", "0.31em")
.attr("x", d => d.children ? -6 : 6)
.text(d => d.data.name)
.filter(d => d.children)
.attr("text-anchor", "end")
.clone(true).lower()
.attr("stroke", "white");
return svg.node();
}
data = d3.json("https://gist.githubusercontent.com/katy-li/f390a9d303db0f492f154d64c83b9c6f/raw/1df008c73dc184b44e5e1e383140f46750509b80/dendrogram_Termset")
tree = data => {
const root = d3.hierarchy(data)
.sort((a, b) => (a.height - b.height) || a.data.name.localeCompare(b.data.name));
root.dx = 10;
root.dy = width / (root.height + 1);
return d3.cluster().nodeSize([root.dx, root.dy])(root);
}
width = 1200
d3 = require("d3@5")
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
