chart = {
const svg = d3.create("svg")
.attr("viewBox", [0, 0, width, height])
.attr("style", "background-color: #212126");
const {nodes, links} = sankey(data);
svg.append("g")
.attr("stroke", "#212126")
.selectAll("rect")
.data(nodes)
.join("rect")
.attr("x", d => d.x0)
.attr("y", d => d.y0)
.attr("height", d => d.y1 - d.y0)
.attr("width", d => d.x1 - d.x0)
.attr("fill", color)
.append("title")
.text(d => `${d.name}\n${format(d.value)}`);
const link = svg.append("g")
.attr("fill", "none")
.attr("stroke-opacity", 0.5)
.selectAll("g")
.data(links)
.join("g");
if (edgeColor === "path") {
const gradient = link.append("linearGradient")
.attr("id", d => (d.uid = DOM.uid("link")).id)
.attr("gradientUnits", "userSpaceOnUse")
.attr("x1", d => d.source.x1)
.attr("x2", d => d.target.x0);
gradient.append("stop")
.attr("offset", "0%")
.attr("stop-color", d => color(d.source));
gradient.append("stop")
.attr("offset", "100%")
.attr("stop-color", d => color(d.target));
}
link.append("path")
.attr("d", d3.sankeyLinkHorizontal())
.attr("stroke", d => edgeColor === "none" ? "#aaa"
: edgeColor === "path" ? d.uid
: edgeColor === "input" ? color(d.source)
: color(d.target))
.attr("stroke-width", d => Math.max(1, d.width));
link.append("title")
.text(d => `${d.source.name} → ${d.target.name}\n${format(d.value)}`);
svg.append("g")
.attr("font-family", "sans-serif")
.attr("font-size", 10)
.attr("fill", "#A6ACB0")
.selectAll("text")
.data(nodes)
.join("text")
.attr("x", d => d.x0 < width / 2 ? d.x1 + 6 : d.x0 - 6)
.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);
return svg.node();
}
sankey = {
const sankey = d3.sankey()
.nodeId(d => d.name)
.nodeAlign(d3[`sankey${align[0].toUpperCase()}${align.slice(1)}`])
.nodeWidth(15)
.nodePadding(10)
.extent([[1, 5], [width - 1, height - 5]]);
return ({nodes, links}) => sankey({
nodes: nodes.map(d => Object.assign({}, d)),
links: links.map(d => Object.assign({}, d))
});
}
format = {
const format = d3.format(",.0f");
return data.units ? d => `${format(d)} ${data.units}` : format;
}
color = {
const color = d3.scaleOrdinal(["#A88DF6", "#80C8FE", "#F98084", "#F99E71", "#ffe066"]);
return d => color(d.category === undefined ? d.name : d.category);
}
data = {
return {
nodes: [
{ name: "Critical", category: "severity" },
{ name: "High", category: "severity" },
{ name: "Medium", category: "severity" },
{ name: "Low", category: "severity" },
{ name: "Unknown", category: "severity" },
{ name: "Open", category: "status" },
{ name: "Reopened", category: "status" },
{ name: "Server", category: "type" },
{ name: "Workstation", category: "type" },
{ name: "Domain Controller", category: "type" },
{ name: "Mobile", category: "type" },
{ name: "Google", category: "vendor" },
{ name: "Chrome", category: "product" },
],
links: [
{ source: "Open", target: "Critical", value: "100" },
{ source: "Open", target: "High", value: "100" },
{ source: "Open", target: "Medium", value: "100" },
{ source: "Open", target: "Low", value: "50" },
{ source: "Open", target: "Unknown", value: "100" },
{ source: "Reopened", target: "Critical", value: "50" },
{ source: "Reopened", target: "High", value: "50" },
{ source: "Reopened", target: "Medium", value: "50" },
{ source: "Reopened", target: "Low", value: "50" },
{ source: "Reopened", target: "Unknown", value: "50" },
{ source: "Critical", target: "Server", value: "75" },
{ source: "Critical", target: "Domain Controller", value: "75" },
{ source: "High", target: "Server", value: "25" },
{ source: "High", target: "Workstation", value: "25" },
{ source: "Medium", target: "Domain Controller", value: "10" },
{ source: "Medium", target: "Mobile", value: "10" },
{ source: "Low", target: "Mobile", value: "25" },
{ source: "Server", target: "Google", value: "10" },
{ source: "Google", target: "Chrome", value: "10" },
],
units: "instances"
}
}
width = 954
height = 600
d3 = require("d3@5", "d3-sankey@0.12")
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.
