ChartExperiment

<!DOCTYPE html>
<meta charset="utf-8">
<head>
<style>
  body {
  	font-size: 10pt;
    font-family: Arial;
  }
  .bar {
    fill: rgb(27,54,104);
  }

.bar:hover {
    fill: rgb(98,167,68);
  }

.axis--x path {
    display: none;
}
  .axis--x {
    font-size:12pt;
    font-weight:bold;
    font-family: Arial;
  }
  .axis--y {
    font-size:10pt;
    font-weight:normal;
    font-family: Arial;
  }

</style>
</head>

var svg = d3.select("svg"),
    margin = {top: 20, right: 20, bottom: 30, left: 40},
    width = +svg.attr("width") - margin.left - margin.right,
    height = +svg.attr("height") - margin.top - margin.bottom;

var x = d3.scaleBand().rangeRound([0, width]).padding(0.1),
    y = d3.scaleLinear().rangeRound([height, 0]);

var g = svg.append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

d3.tsv("data.tsv", function(d) {
  d.reach = +d.reach;
  return d;
}, function(error, data) {
  if (error) throw error;

x.domain(data.map(function(d) { return d.demo; }));
  y.domain([0, d3.max(data, function(d) { return d.reach; })]);

g.append("g")
      .attr("class", "axis axis--x")
      .attr("transform", "translate(0," + height + ")")
      .call(d3.axisBottom(x));

g.append("g")
      .attr("class", "axis axis--y")
      .call(d3.axisLeft(y).ticks(10, "%"))
    .append("text")
      .attr("transform", "rotate(-90)")
      .attr("y", 6)
      .attr("dy", "0.71em")
      .attr("text-anchor", "end")
      .text("Reach");

g.selectAll(".bar")
    .data(data)
    .enter().append("rect")
      .attr("class", "bar")
      .attr("x", function(d) { return x(d.demo); })
      .attr("y", function(d) { return y(d.reach); })
      .attr("width", x.bandwidth())
      .attr("height", function(d) { return height - y(d.reach); });
});

</script>
  
  
<script>

var dispatch = d3.dispatch("load", "statechange");

var groups = [
  "A18-34",
  "A35-49",
  "A50+"
];

d3.csv("data.csv", type, function(error, states) {
  if (error) throw error;
  var stateById = d3.map();
  states.forEach(function(d) { stateById.set(d.id, d); });
  dispatch.call("load", this, stateById);
  dispatch.call("statechange", this, stateById.get("CA"));
});

// A drop-down menu for selecting a state; uses the "menu" namespace.
dispatch.on("load.menu", function(stateById) {
  var select = d3.select("body")
    .append("div")
    .append("select")
      .on("change", function() { dispatch.call("statechange", this, stateById.get(this.value)); });

select.selectAll("option")
      .data(stateById.values())
    .enter().append("option")
      .attr("value", function(d) { return d.id; })
      .text(function(d) { return d.id; });

dispatch.on("statechange.menu", function(state) {
    select.property("value", state.id);
  });
});

// A bar chart to show total population; uses the "bar" namespace.
dispatch.on("load.bar", function(stateById) {
  var margin = {top: 20, right: 20, bottom: 30, left: 40},
      width = 80 - margin.left - margin.right,
      height = 460 - margin.top - margin.bottom;

var y = d3.scaleLinear()
      .domain([0, .5])
      .rangeRound([height, 0])
      .nice();

var yAxis = d3.axisLeft(y)
      .tickFormat(d3.format(".0%"));

var svg = d3.select("body").append("svg")
      .attr("width", width + margin.left + margin.right)
      .attr("height", height + margin.top + margin.bottom)
    .append("g")
      .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

svg.append("g")
      .attr("class", "y axis")
      .call(yAxis);

var rect = svg.append("rect")
      .attr("x", 4)
      .attr("width", width - 4)
      .attr("y", height)
      .attr("height", 0)
      .style("fill", "#aaa");

dispatch.on("statechange.bar", function(d) {
    rect.transition()
        .attr("y", y(d.Reach))
        .attr("height", y(0) - y(d.Reach));
  });
});

// A pie chart to show population by age group; uses the "pie" namespace.
dispatch.on("load.pie", function(stateById) {
  var width = 600,
      height = 460,
      radius = Math.min(width, height) / 2;

var color = d3.scaleOrdinal()
      .domain(groups)
      .range(["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"]);

var arc = d3.arc()
      .outerRadius(radius - 10)
      .innerRadius(radius - 70);

var pie = d3.pie()
      .sort(null);

var svg = d3.select("body").append("svg")
      .attr("width", width)
      .attr("height", height)
    .append("g")
      .attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");

var path = svg.selectAll("path")
      .data(groups)
    .enter().append("path")
      .style("fill", color)
      .each(function() { this._current = {startAngle: 0, endAngle: 0}; });

dispatch.on("statechange.pie", function(d) {
    path.data(pie.value(function(g) { return d[g]; })(groups)).transition()
        .attrTween("d", function(d) {
          var interpolate = d3.interpolate(this._current, d);
          this._current = interpolate(0);
          return function(t) {
            return arc(interpolate(t));
          };
        });
  });
});

// Coerce population counts to numbers and compute total per state.
function type(d) {
  d.total = d3.sum(groups, function(k) { return d[k] = +d[k]; });
  return d;
}

</script>
</body>

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