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@adrianblanco
Created November 15, 2015 16:56
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Population Distribution ethnicity
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Stack layout, stacked bar chart, but flipped</title>
<script type="text/javascript" src="//d3js.org/d3.v3.min.js"></script>
<style type="text/css">
body {
background-color: white;
font-family: Helvetica, Arial, sans-serif;
}
h1 {
font-size: 24px;
margin: 0;
}
p {
font-size: 14px;
margin: 10px 0 0 0;
}
svg {
background-color: white;
}
rect:hover {
fill: grey;
}
</style>
</head>
<body>
<h1>Population Distribution by Race/Ethnicity</h1>
<p>Population distribution by race in the United States. Source: <a href="http://kff.org/other/state-indicator/distribution-by-raceethnicity/">KFF</a>, 2014</p>
<p><FONT COLOR="#936abb">&#9608;</FONT> White <FONT COLOR="#d42a2f">&#9608;</FONT> Black <FONT COLOR="#339f34">&#9608;</FONT> Hispanic <FONT COLOR="#fd7f28">&#9608;</FONT> Asian <FONT COLOR="#2678b2">&#9608;</FONT> Other</p>
<br>
<script type="text/javascript">
//Width and height
var w = 640;
var h = 400;
var padding = [ 0, 0, 0, 0 ]; //Top, right, bottom, left
//Original data
var dataset = [
[
{ x: 0, y: 2, z: "2 % of the population in the US is from another ethnicity" },
],
[
{ x: 0, y: 6, z: "6 % of the population in the US is Asian" },
],
[
{ x: 0, y: 12, z: "12 % of the population in the US is Black" },
],
[
{ x: 0, y: 18, z: "18 % of the population in the US is Hispanic" },
],
[
{ x: 0, y: 62, z: "62 % of the population in the US is White" },
],
];
//Set up stack method
var stack = d3.layout.stack()
.order("reverse"); //Flip the order
//Data, stacked
stack(dataset);
//Set up scales
var xScale = d3.scale.ordinal()
.domain(d3.range(dataset[0].length))
.rangeRoundBands([0, w], 0.05);
var yScale = d3.scale.linear()
.domain([0,
d3.max(dataset, function(d) {
return d3.max(d, function(d) {
return d.y0 + d.y;
});
})
])
.range([0, h]);
//Easy colors accessible via a 10-step ordinal scale
var colors = d3.scale.category10()
//Create SVG element
var svg = d3.select("body")
.append("svg")
.attr("width", w)
.attr("height", h);
// Add a group for each row of data
var groups = svg.selectAll("g")
.data(dataset)
.enter()
.append("g")
.style("fill", function(d, i) {
return colors(i);
//if(d.value > x) return 'steelblue'
//else if(d.value > y)
});
// Add a rect for each data value
var rects = groups.selectAll("rect")
.data(function(d) { return d; })
.enter()
.append("rect")
.attr("x", function(d, i) {
return xScale(i);
})
.attr("width", xScale.rangeBand())
.attr("y", function(d) {
return h - yScale(d.y0) - yScale(d.y); //Flip the math!
})
.attr("height", function(d) {
return yScale(d.y);
})
.append("title")
.text(function(d) {
return d.z ;
});
</script>
</body>
</html>
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