Tarea3

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
    .bar {
  	fill: steelblue;
    }

.bar:hover {
      fill: brown;
    }

.axis {
      font: 10px sans-serif;
    }

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

.x.axis path {
      display: none;
    }
  </style>
</head>

<body>
  <script>
    var data = [
      {"code":23802620, "grade":4.85},
      {"code":23802825, "grade":4.865},
      {"code":23801894, "grade":3.24},
      {"code":23802926, "grade":5},
      {"code":23800661, "grade":3.19},
      {"code":23800768, "grade":3.98},
      {"code":23800972, "grade":4.89},
      {"code":23801922, "grade":3.73},
      {"code":23805498, "grade":4.795},
      {"code":23805913, "grade":4.85},
      {"code":23800311, "grade":2.81},
      {"code":23806395, "grade":4.72},
      {"code":23808850, "grade":3.85},
      {"code":23802872, "grade":2.16},
      {"code":23802105, "grade":4.715},
      {"code":23809880, "grade":4.92},
      {"code":23802056, "grade":4.48},
      {"code":23807897, "grade":5.2},
      {"code":23807916, "grade":5},
      {"code":23801962, "grade":3.62},
      {"code":23808246, "grade":4.61},
      {"code":23802600, "grade":0.11},
      {"code":23808311, "grade":4.7}
    ];
     // set the dimensions and margins of the graph
    var margin = {top: 20, right: 20, bottom: 30, left: 40},
          width = 960 - margin.left - margin.right,
          height = 500 - margin.top - margin.bottom;

// set the ranges
    var x = d3.scaleBand()
              .range([0, width])
              .padding(0.1);
    var y = d3.scaleLinear()
              .range([height, 0]);
    
//     var tip = d3.tip()
//     .attr('class', 'd3-tip')
//     .offset([-10, 0])
//     .html(function(d) {
//       return "<strong>Frequency:</strong> <span style='color:red'>" + d.frequency + "</span>";
//     })
          
    // append the svg object to the body of the page
    // append a 'group' element to 'svg'
    // moves the 'group' element to the top left margin
    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 + ")");

// Scale the range of the data in the domains
    x.domain(data.map(function(d) { return d.code; }));
    y.domain([0, d3.max(data, function(d) { return d.grade; })]);

// append the rectangles for the bar chart
    svg.selectAll(".bar")
        .data(data)
        .enter().append("rect")
        .on("click", function(d){ 
          console.log(d.grade);
          })
        .attr("class", "bar")
        .attr("x", function(d) { return x(d.code); })
        .attr("width", x.bandwidth())
        .attr("y", function(d) { return y(d.grade); })
        .attr("height", function(d) { return height - y(d.grade); });

// add the x Axis
    svg.append("g")
        .attr("transform", "translate(0," + height + ")")
        .call(d3.axisBottom(x));

// add the y Axis
    svg.append("g")
        .call(d3.axisLeft(y));

</script>
</body>

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