eggheadio-projects/use-d3-v3-to-build-interactive-charts-with-javascript: null

.DS_Store

# use-d3-v3-to-build-interactive-charts-with-javascript

#chartArea {
  width: 400px;
  height: 300px;
  background-color: #CCC;
}

<!DOCTYPE html>
<html>
<head>
  <title>D3 - Data Driven Documents</title>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.16/d3.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore.js"></script>
  <link rel="stylesheet" href="./app.css">
</head>
<body>
<div id="chartArea"></div>
<script src="script.js"></script>
</body>
</html>

var dataset = _.map(_.range(75), function (i) {
    return Math.random() * 500;
  });
  var w = 400, h = 300;

  var svg = d3.select('#chartArea').append('svg')
    .attr('width', w)
    .attr('height', h);

  var xScale = d3.scale.ordinal()
    .domain(dataset)
    .rangeBands([0, w], 0.1, 0.3);

  var yScale = d3.scale.linear()
    .domain([0, d3.max(dataset) * 1.1])
    .range([0, h]);

  var colorScale = d3.scale.linear()
    .domain([0, dataset.length])
    .range(['yellow', 'green']);

  svg.selectAll('rect')
    .data(dataset)
    .enter()
    .append('rect')
    .attr('class', 'bar')
    .attr('x', function (d, i) {
      return xScale(d);
    })
    .attr('y', function (d) {
      return h - yScale(d);
    })
    .attr('width', xScale.rangeBand())
    .attr('height', function (d) {
      return yScale(d);
    })
    .attr('fill', function (d, i) {
      return colorScale(i);
    });