D3js tutorials - bar chart 3

https://github.com/mbostock/d3/wiki/Tutorials

by Nicolas Panel

HTML

<script src="//cdn.jsdelivr.net/d3js/3.4.13/d3.min.js"></script>
<svg class="chart"></svg>

CSS

.chart rect {
  fill: steelblue;
}

.chart text {
  fill: white;
  font: 10px sans-serif;
  text-anchor: end;
}
.axis text {
  font: 10px sans-serif;
}

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

.x.axis path {
  display: none;
}

JavaScript

var data = [
  {name: "Locke",    value:  4},
  {name: "Reyes",    value:  8},
  {name: "Ford",     value: 15},
  {name: "Jarrah",   value: 16},
  {name: "Shephard", value: 23},
  {name: "Kwon",     value: 42}
];


var height = 500,
    width = $(".chart").parent().width(),
    barHeight = 20;

var y = d3.scale.linear()
    .range([height, 0])
    .domain([0, d3.max(data, function(d) { return d.value; })]);

var x = d3.scale.linear()
    .domain([0, d3.max(data, function(d, i) { return i  + 10 ; })])
    .range([0, width]);
    //.rangeRoundBands([0, width], .1);

var xAxis = d3.svg.axis()
    .scale(x)
    .orient("bottom");

var chart = d3.select(".chart")
    .attr("width", width)
    .attr("height", height);


  var barWidth = width / data.length;

  var bar = chart.selectAll("g")
      .data(data)
    .enter().append("g")
      .attr("transform", function(d, i) { return "translate(" + i * barWidth + ",0)"; });

  bar.append("rect")
      .attr("y", function(d) { return y(d.value); })
      .attr("height", function(d) { return height - y(d.value); })
      .attr("width", barWidth - 1);

  bar.append("text")
      .attr("x", barWidth / 2)
      .attr("y", function(d) { return y(d.value) + 3; })
      .attr("dy", ".75em")
      .text(function(d) { return d.value; });

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