D3: Bar Chart - Cancelled Flights by Airport in 2016

<!DOCTYPE html>
<html lang = "en">
<head>
<meta charset="utf-8">
    <title> Cancelled Flights in 2016 </title>
<style>

</style></head>
<body>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>

var margin = {top: 50, right: 50, bottom: 50, left: 50},
    width = 1000 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;

var xScale = d3.scaleBand()
              .range([0, width])
              .paddingInner(0.05)
              .paddingOuter(0.25);

var yScale = d3.scaleLinear()
    .range([height, 0]);

var xAxis = d3.axisBottom()
    .scale(xScale);

var yAxis = d3.axisLeft()
    .scale(yScale);

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 + ")");

var dataset = [];

d3.csv("airlines.csv", function(data) {

data.forEach(function(d) {
      // only want values from year 2016, store in new array
      // pushing only code and cancellations
          if (d.Year == "2016"){
            dataset.push({code:d.Code, cancellations:parseInt(d.Cancelled)});
          }
        });

xScale.domain(dataset.map(function(d) { return d.code; }));
  yScale.domain([0, d3.max(dataset, function(d) { return d.cancellations; })]);

svg.append("g")
      .attr("class", "axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis);

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

svg.selectAll("rect")
      .data(dataset)
      .enter()
      .append("rect")
      .attr("x", function(d) { return xScale(d.code); })
      .attr("y", function(d) { return yScale(d.cancellations); })
      .attr("height", function(d) { return height - yScale(d.cancellations); })
      .attr("width", xScale.bandwidth())
      .attr("fill", "steelblue");

svg.selectAll("text.values")
      .data(dataset)
      .enter()
      .append("text")
      .text(function (d) { return d.cancellations; })
      .attr("x", function(d) { return xScale(d.code) + xScale.bandwidth()/2; })
      .attr("y", function(d) { return yScale(d.cancellations) + 13; })
      .style("text-anchor", "middle")
      .attr("font-family", "sans-serif")
      .attr("font-size", "11px")
      .attr("fill", "white");

// text label for the y axis
  svg.append("text")
      .attr("transform", "rotate(-90)")
      .attr("y", 0 - margin.left)
      .attr("x",0 - (height / 2))
      .attr("dy", "1em")
      .style("text-anchor", "middle")
      .attr("font-family", "sans-serif")
      .text("Number of Flights Cancelled");

// text label for the x axis
  svg.append("text")             
      .attr("transform",
            "translate(" + (width/2) + " ," + 
                           (height + 40) + ")")
      .style("text-anchor", "middle")
      .attr("font-family", "sans-serif")
      .text("Airport Code");

svg.append("text")
        .attr("transform", "translate(" + width/2 + "," + -20 + ")")
        .style("text-anchor", "middle")
        .attr("font-family", "sans-serif")
        .text("Number of Flights Cancelled in 2016");
         
});
</script>
<p><a href="https://github.com/alignedleft/d3-book/blob/master/chapter_09/02_bar_chart_with_scales.html">reference (from book) for adding labels</a></p>
</body>
</html>

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