Suicide Treemap by Age and Mechanism

Data displayed in the JavaScript Console on hover.

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<title>Death by Intent</title>
<svg width="960" height="1280"></svg>
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<script>
var root;

var width = 960,
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var format = d3.format(",d");

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  .range(d3.schemeCategory10
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  .domain([12, 10, 8, 6, 4, 2, 0]);

var nest = d3.nest()
  .key(function(d) { return d["age"]; })
  .key(function(d) { return d["mechanism"]; });

var treemap = d3.treemap()
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d3.csv("suicide.csv", function(error, data) {
  if (error) throw error;

// coerce numbers
  ["deaths", "population"].forEach(function(col) {
    data.forEach(function(d) {
      d[col] = +d[col];
    });
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data.forEach(function(d) {
    d["calculated_rate"] = d["deaths"] / d["population"] * 100000;
  });

var nested = nest.entries(data);

root = d3.hierarchy({
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    .sum(function(d) {
      return d.deaths;
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treemap(root);

cell.append("rect")
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      .attr("width", function(d) { return d.x1 - d.x0; })
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      .style("fill", function(d) {
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      })
      .on("mouseover", function(d) {
        console.log("---");
        console.log("Calculated Rate per 100,000 ", d.data["calculated_rate"]);
        console.log("Age: " + d.data.age);
        console.log("Mechanism: " + d.data.mechanism);
        console.log("Year: " + d.data.year);
        console.log("Deaths: " + d.data.deaths);
        console.log("Population: " + d.data.population);
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      .text(function(d) {
        return d.data.key || d.data.year;
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});

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https://d3js.org/d3.v4.js