D3 Examples - OpenStreetMap Contributor Editing Life

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<!DOCTYPE html>
<meta charset="utf-8">
<style>
​
body {
  font: 10px sans-serif;
}
​
.bar rect {
  fill: steelblue;
  shape-rendering: crispEdges;
}
​
.bar text {
  fill: #fff;
}
​
.axis path, .axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}
​
</style>
<body>
<script src="https://d3js.org/d3.v2.min.js?2.10.0"></script>
<script>
​
d3.json('lives_compact.json', function(values) {
​
// A formatter for counts.
var formatTick = function(x) {
    var days = Math.round((x * 1000) / 60 / 60 / 24);
    if (days > 365) {
        return (days / 365).toFixed(1) + ' years';
    } else {
        return days + ' days';
    }
};
​
var formatCount = d3.format(",.0f");
​
var margin = {top: 10, right: 30, bottom: 30, left: 30},
    width = 960 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;
​
var x = d3.scale.linear()
    .domain([0, d3.max(values)])
    .range([0, width]);
​
// Generate a histogram using twenty uniformly-spaced bins.
var data = d3.layout.histogram()
    .bins(x.ticks(10))
    (values);
​
var y = d3.scale.linear()
    .domain([0, d3.max(data, function(d) { return d.y; })])
    .range([height, 0]);
​
var xAxis = d3.svg.axis()
    .scale(x)
    .tickFormat(formatTick)
    .orient("bottom");
​
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 bar = svg.selectAll(".bar")
    .data(data)
  .enter().append("g")
    .attr("class", "bar")
    .attr("transform", function(d) { return "translate(" + x(d.x) + "," + y(d.y) + ")"; });
​
bar.append("rect")
    .attr("x", 1)
    .attr("width", x(data[0].dx) - 1)
    .attr("height", function(d) { return height - y(d.y); });
​
bar.append("text")
    .attr("dy", ".75em")
    .attr("y", 6)
    .attr("x", x(data[0].dx) / 2)
    .attr("text-anchor", "middle")
    .text(function(d) { return formatCount(d.y); });
​
svg.append("g")
    .attr("class", "x axis")
    .attr("transform", "translate(0," + height + ")")
    .call(xAxis);
​
});
</script>
​
    