DataViz 101: Simple Bar Chart Interaction

<!DOCTYPE html>
<meta charset="utf-8">
<style>

body {
  width: 960px;
  margin: auto;
  position: relative;
}

#n {
  position: absolute;
  top: 20px;
  right: 30px;
  font-family: "Helvetica Neue"
}

#n input {
  width: 150px;
}

output {
  display: block;
  font-size: 72px;
}

.bar {
  fill: steelblue;
}

.axis text {
  font-size: 14px;
  font-family: "Garamond"
}

.axis path,
.axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}

.x.axis path {
  display: none;
}

</style>

<body>
  <div id="n">
    &nbsp; &nbsp; Top forty &nbsp; <button name="gender" 
                                           value="male">male</button> <br>
    &nbsp; &nbsp;baby names in year
    <output name="n"></output>
  <input type="range" min="1880" max="2013" value="1992">
  </div>
<script src="https://d3js.org/d3.v3.js"></script>
<script>
var margin = {top: 30, right: 20, bottom: 80, left: 50},
    width = 960 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom

var output = d3.select("output"),
    input = d3.select("input").on("change", y_changed).each(y_changed),
    gender_e = d3.select("button")
    year = "1992";
gender_e.on("click", g_changed).each(g_changed)

var x = d3.scale.ordinal()
    .rangeRoundBands([0, width], .1);

var y = d3.scale.linear()
    .range([height, 0]);

var xAxis = d3.svg.axis()
    .scale(x)
    .orient("bottom");

var yAxis = d3.svg.axis()
    .scale(y)
    .orient("left");

var target_gender = "F";

function render() {
  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 + ")");

d3.csv("/hwangmoretime/raw/3bf25cffeef66aba194a/yob" + year + ".csv", type, function(error, data) {
    var gender_nest = d3.nest()
      .key(function(d) { return d.gender; })
      .map(data);
    var gen_d = gender_nest[target_gender].slice(0,40);

// Compute the scales’ domains.
    x.domain(gen_d.map(function(d) { return d.name; }));
    y.domain([0, d3.max(gen_d.map(function(d) { return d.count; }))]).nice();

svg.append("g")
        .attr("class", "x axis")
        .attr("transform", "translate(0," + height + ")")
        .call(xAxis)
          .selectAll("text")  
          .style("text-anchor", "end")
          .attr("dx", "-.8em")
          .attr("dy", ".15em")
          .attr("transform", function(d) {
              return "rotate(-65)" 
          });

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

svg.selectAll(".bar")
        .data(gen_d)
      .enter().append("rect")
        .attr("class", "bar")
        .attr("x", function(d) { return x(d.name); })
        .attr("y", function(d) { return y(d.count); })
        .attr("height", function(d) { return height - y(d.count); })
        .attr("width", x.rangeBand());
  });
}

function type(d) {
  d.count = +d.count;
  return d;
}

function y_changed() {
  year = this.value;
  output.text(year);
  d3.select("svg").remove()
  render();
}

Modified http://d3js.org/d3.v3.js to a secure url

https://d3js.org/d3.v3.js