chart = {
const width = 928;
const height = 500;
const marginTop = 20;
const marginRight = 30;
const marginBottom = 30;
const marginLeft = 30;
const x = d3.scaleBand()
.domain(data.map(d => d.year))
.rangeRound([marginLeft, width - marginRight]);
const y = d3.scaleLinear()
.domain([0, d3.max(series, d => d3.max(d, d => d[1]))]).nice()
.range([height - marginBottom, marginTop]);
const color = d3.scaleOrdinal()
.domain(colors.keys())
.range(colors.values());
const svg = d3.create("svg")
.attr("viewBox", [0, 0, width, height])
.attr("width", width)
.attr("height", height)
.attr("style", "max-width: 100%; height: auto;");
const formatRevenue = x => (+(x / 1e9).toFixed(2) >= 1)
? `${(x / 1e9).toFixed(2)}B`
: `${(x / 1e6).toFixed(0)}M`;
svg.append("g")
.selectAll("g")
.data(series)
.join("g")
.attr("fill", ({key}) => color(key))
.call(g => g.selectAll("rect")
.data(d => d)
.join("rect")
.attr("x", d => x(d.data.year))
.attr("y", d => y(d[1]))
.attr("width", x.bandwidth() - 1)
.attr("height", d => y(d[0]) - y(d[1]))
.append("title")
.text(d => `${d.data.name}, ${d.data.year}
${formatRevenue(d.data.value)}`));
svg.append("g")
.attr("transform", `translate(0,${height - marginBottom})`)
.call(d3.axisBottom(x)
.tickValues(d3.ticks(...d3.extent(x.domain()), width / 80))
.tickSizeOuter(0));
svg.append("g")
.attr("transform", `translate(${marginLeft},0)`)
.call(d3.axisLeft(y)
.tickFormat(x => (x / 1e9).toFixed(0)))
.call(g => g.select(".domain").remove())
.call(g => g.select(".tick:last-of-type text").clone()
.attr("x", 3)
.attr("text-anchor", "start")
.attr("font-weight", "bold")
.text("Revenue (billions, adj.)"));
return Object.assign(svg.node(), {scales: {color}});
}