chart = {
const root = treemap(data);
const svg = d3.create("svg")
.attr('width', width)
.attr('height', height)
.style("font", "10px sans-serif");
const leaf = svg.selectAll("g")
.data(root.leaves())
.join("g")
.attr("transform", d => `translate(${d.x0},${d.y0})`);
leaf.append("title")
.text(d => `${d.ancestors().reverse().map(d => d.data.name).join("/")}\n${format(d.value)}`);
leaf.append("rect")
.attr("id", d => (d.leafUid = DOM.uid("leaf")).id)
.attr("fill", '#b10000')
.attr("fill-opacity", 0.6)
.attr("width", d => d.x1 - d.x0)
.attr("height", d => d.y1 - d.y0);
leaf.append("clipPath")
.attr("id", d => (d.clipUid = DOM.uid("clip")).id)
.append("use")
.attr("xlink:href", d => d.leafUid.href);
leaf.append("text")
.attr("clip-path", d => d.clipUid)
.attr('fill', '#fff')
.attr('fill-opacity', 1)
.attr('font-size', 14)
.attr('x', 5)
.attr('dy', '1.33em')
.text(d => `${d.ancestors().reverse().map(d => d.data.name).join("/")}\n${format(d.value)}`)
return svg.node();
}
getSideLength = () => {
// 1 Canada exports 532297
// 2 Canada imports 124331
// 3 Mexico exports 1360190
// 4 Mexico imports 115088
const area = d3.scaleLinear()
.domain([0, 1360190])
.range([0, 500000]);
const value = {
exportsToMexico: 1360190,
importsFromMexico: 115088,
exportsToCanada: 532297,
importsFromCanada: 124331
};
const a = area(value[dataset]);
const sideLength = Math.sqrt(a)
return sideLength;
}
treemap = data => d3.treemap()
.tile(d3[tile])
.size([width, height])
.padding(1)
.round(true)
(d3.hierarchy(data)
.sum(d => d.value)
.sort((a, b) => b.value - a.value))
format = d3.format(",d")
color = d3.scaleOrdinal(d3.schemeCategory10)
d3 = require("d3@5")
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