y = d3.scalePoint(graph.nodes.map(d => d.id).sort(d3.ascending), [margin.top, height - margin.bottom])
margin = ({top: 20, right: 20, bottom: 20, left: 100})
height = (data.nodes.length - 1) * step + margin.top + margin.bottom
step = 14
color = d3.scaleOrdinal(graph.nodes.map(d => d.group).sort(d3.ascending), d3.schemeCategory10)
graph = {
const nodes = data.nodes.map(({id, group}) => ({
id,
sourceLinks: [],
targetLinks: [],
group
}));
const nodeById = new Map(nodes.map(d => [d.id, d]));
const links = data.links.map(({source, target, value}) => ({
source: nodeById.get(source),
target: nodeById.get(target),
value
}));
for (const link of links) {
const {source, target, value} = link;
source.sourceLinks.push(link);
target.targetLinks.push(link);
}
return {nodes, links};
}
data = FileAttachment("line_chart_coocurr@5.json").json()
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.
