D3 Examples - BasicBarChart

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<!DOCTYPE html>
<meta charset="utf-8">
<head>
    <style>
​
    .axis {
      font: 10px sans-serif;
    }
​
    .axis path,
    .axis line {
      fill: none;
      stroke: #000;
      shape-rendering: crispEdges;
    }
    </style>
</head>
​
<body>
    
<script src="https://d3js.org/d3.v3.min.js"></script>
​
<script>
  
  var margin = {top: 20, right: 20, bottom: 40, left: 40},
    width = 1020 - margin.left - margin.right,
    height = 560 - margin.top - margin.bottom;
  
  var x = d3.scale.linear().range([width, 0]);
  var y = d3.scale.linear().range([height, 0]);
  
  var xAxis = d3.svg.axis()
    .scale(x)
    .orient("bottom")
    .ticks(5);
​
    var yAxis = d3.svg.axis()
    .scale(y)
    .orient("left")
    .ticks(10);
  
  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("alpha_frequencies.csv", function(error, dataset)                                      {console.log(dataset);
​
  dataset.forEach(function(d) {
      d.frequency = +d.frequency; //parseFloat(d.frequency)
        d.letter = d.letter
      });
                                                                               
    x.domain(dataset.map(function(d) { return d.letter; }));
  y.domain([0, d3.max(dataset, function(d) { return d.frequency; })]);
​
dataset.sort(function(a, b) { 
        return b.frequency - a.frequency;
                                  });                                  
  svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis)
    .selectAll("text")
      .style("text-anchor", "end")
      .attr("dx", "-01em")
      .attr("dy", "-.55em")
      .attr("transform", "rotate(-90)" );
​
  svg.append("g")
      .attr("class", "y axis")
      .call(yAxis)
    .append("text")
      .attr("transform", "rotate(-90)")
      .attr("y",1)
      .attr("dy", "-34")
      .style("text-anchor", "end")
      .text("Alpha Freq.");
                      
  svg.selectAll("rect")
      .data(dataset)
    .enter().append("rect")
      .style("fill", "red")
        .style("opacity", .0)
    .transition()
        .delay(function(d, i) { return i * 2000/(i+1*4) })
      .duration(1000)
        .style("opacity", 0.9)
      .attr("x", function(d, i) { return i * width/26})
      .attr("width", 35)
      .attr("y", function(d) { return y(d.frequency); })
      .attr("height", function(d) { return height - y(d.frequency);})
    .transition()
      .delay(2900)
      .style("fill", "blue")
      .style("opacity", 0.7)
        .attr("height", 8)
//     .remove();                                                                               
                                      
});
​
  
​
  
  </script>
    