/
pop2010-scales_04.html
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pop2010-scales_04.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<style>
body {
font-family: Helvetica, Arial;
}
.top-label {
font-size: 13px;
font-style: italic;
text-transform: uppercase;
float: left;
}
.age-label {
text-align: right;
font-weight: bold;
width: 90px;
padding-right: 10px;
}
.clearfix {
clear: both;
}
.bar {
fill: DarkSlateBlue;
}
.x.axis line {
fill: none;
stroke: #fff;
}
.axis path {
display: none;
}
.x.axis text {
font-size: 13px;
}
.y.axis line {
display: none;
}
</style>
</head>
<body>
<!-- -->
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
var popData = [
{age:"80 and up", value:0.016},
{age:"75-79", value:0.015},
{age:"70-74", value:0.021},
{age:"65-69", value:0.026},
{age:"60-64", value:0.034},
{age:"55-59", value:0.045},
{age:"50-54", value:0.051},
{age:"45-49", value:0.060},
{age:"40-44", value:0.066},
{age:"35-39", value:0.071},
{age:"30-34", value:0.073},
{age:"25-29", value:0.081},
{age:"20-24", value:0.089},
{age:"15-19", value:0.088},
{age:"10-14", value:0.086},
{age:"5-9", value:0.088},
{age:"0-4", value:0.093}
];
var margin = {top: 20, right: 0, bottom: 0, left: 100},
width = 500 - margin.left - margin.right,
height = 450 - margin.top - margin.bottom;
var x = d3.scale.linear()
.domain([0, d3.max(popData, function(element) { return element.value; } ) ] )
.range([0, width]);
var y = d3.scale.ordinal()
.domain(popData.map(function(element) { return element.age; }))
.rangeBands([0, height], 0.2, 0);
var xAxis = d3.svg.axis()
.scale(x)
.orient("top")
.ticks(5, "%")
.tickSize(-height);
var yAxis = d3.svg.axis()
.scale(y)
.orient("left");
var body = d3.select("body");
body.append("h2")
.text("Age distribution of the world, 2010");
body.append("div")
.attr("class", "top-label age-label")
.style("width", margin.left + "px")
.append("p")
.text("age group");
body.append("div")
.attr("class", "top-label")
.append("p")
.text("portion of the population")
body.append("div")
.attr("class", "clearfix");
var svg = 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 barGroup = svg.append("g")
.attr("class", "bargroup");
barGroup.selectAll("rect")
.data(popData)
.enter().append("rect")
.attr("class", "bar")
.attr("x", 0)
.attr("y", function(d) { return y(d.age); } )
.attr("width", function(d) { return x(d.value); } )
.attr("height", y.rangeBand());
svg.append("g")
.call(xAxis)
.attr("class", "x axis")
svg.append("g")
.call(yAxis)
.attr("class", "y axis");
</script>
</body>
</html>