D3 Examples - VI4

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<!DOCTYPE html>
<meta charset="utf-8">
<style>
​
body {
  font: 10px sans-serif;
}
​
.axis path,
.axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}
​
.bar {
  fill: blue;
}
​
.x.axis path {
  display: none;
}
​
</style>
<body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
<script>
​
var margin = {top: 20, right: 20, bottom: 30, left: 40},
    width = 960 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;
​
var x0 = d3.scale.ordinal()
    .rangeRoundBands([0, width], .1);
​
var x1 = d3.scale.ordinal();
​
var y = d3.scale.linear()
    .range([height, 0]);
​
var color = d3.scale.ordinal()
    .range(["#4e548c", "#a09281", "#6e8590", "#835783", "#d88b5e", "#ffe970"]);
​
​
var xAxis = d3.svg.axis()
    .scale(x0)
    .orient("bottom");
    
​
var yAxis = d3.svg.axis()
    .scale(y)
    .orient("left")
    .tickFormat(d3.format(".2s"));
​
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("https://gist.githubusercontent.com/surabhishankar/ac6bce42e328526adde7/raw/b209e67b5f97443c1dd7631e597f067061acce06/data.csv", function(error, data) {
  var years = d3.keys(data[0]).filter(function(key) { return key !== "State"; });
​
  data.forEach(function(d) {
    d.year = years.map(function(name) { return {name: name, value: +d[name]}; });
  });
​
  x0.domain(data.map(function(d) { return d.State; }));
  x1.domain(years).rangeRoundBands([0, x0.rangeBand()]);
  y.domain([0, d3.max(data, function(d) { return d3.max(d.year, function(d) { return d.value; }); })]);
​
  svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis);
    
​
  svg.append("g")
      .attr("class", "y axis")
      .call(yAxis)
    .append("text")
      .attr("transform", "rotate(-90)")
      .attr("y", -40)
      .attr("dy", ".71em")
      .style("text-anchor", "end")
      .text("Population");
​
  var state = svg.selectAll(".state")
      .data(data)
    .enter().append("g")
      .attr("class", "g")
      .attr("transform", function(d) { return "translate(" + x0(d.State) + ",0)"; });
​
  state.selectAll("rect")
      .data(function(d) { return d.year; })
    .enter().append("rect")
      .attr("width", x1.rangeBand())
      .attr("x", function(d) { return x1(d.name); })
      .attr("y", function(d) { return y(d.value); })
      .attr("height", function(d) { return height - y(d.value); })
      .style("fill", function(d) { return color(d.name); });
​
  var legend = svg.selectAll(".legend")
      .data(years.slice())
    .enter().append("g")
      .attr("class", "legend")
      .attr("transform", function(d, i) { return "translate(0," + i * 21 + ")"; });
​
  legend.append("rect")
      .attr("x", width - 20)
      .attr("width", 20)
      .attr("height", 20)
      .style("fill", color);
​
  legend.append("text")
      .attr("x", width - 25)
      .attr("y", 10)
      .attr("dy", ".40em")
      .style("text-anchor", "end")
      .text(function(d) { return d; });
​
});
​
</script>
</body>
</html>
    