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Last active January 4, 2016 12:29
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README.md

Horizontal Stacked Bar Chart

Treat it exactly the same as a normal stacked bar chart, except invert the x and y values before stacking, and then invert them back afterwards.

Raw
index.html
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<style>
.bar {
}
.axis path,
.axis line {
fill: none;
stroke: black;
shape-rendering: crispEdges;
}
.axis text {
font-family: sans-serif;
font-size: 11px;
}
#tooltip {
position: absolute;
text-align: center;
width: 40px;
height: auto;
padding: 10px;
background-color: white;
-webkit-border-radius: 10px;
-moz-border-radius: 10px;
border-radius: 10px;
-webkit-box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.4);
box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.4);
pointer-events: none;
}
#tooltip.hidden {
display: none;
}
#tooltip p {
margin: 0;
font-family: sans-serif;
font-size: 16px;
line-height: 20px;
}
</style>
</head>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<div id="tooltip" class="hidden">
<p><span id="value">100</span></p>
</div>
<script>
var margins = {
top: 12,
left: 48,
right: 24,
bottom: 24
},
legendPanel = {
width: 240
},
width = 700 - margins.left - margins.right - legendPanel.width,
height = 100 - margins.top - margins.bottom,
dataset = [
{
data: [
{ month: 'Aug', count: 123 },
{ month: 'Sep', count: 234 },
{ month: 'Oct', count: 345 }
],
name: 'Series #1'
},
{
data: [
{ month: 'Aug', count: 235 },
{ month: 'Sep', count: 267 },
{ month: 'Oct', count: 573 }
],
name: 'Series #2'
}
],
series = dataset.map(function(d) { return d.name; }),
dataset = dataset.map(function(d) {
return d.data.map(function(o, i) {
// Structure it so that your numeric
// axis (the stacked amount) is y
return {
y: o.count,
x: o.month
};
});
}),
stack = d3.layout.stack();
stack(dataset);
var dataset = dataset.map(function(group) {
return group.map(function(d) {
// Invert the x and y values, and y0 becomes x0
return {
x: d.y,
y: d.x,
x0: d.y0
};
});
}),
svg = d3.select('body')
.append('svg')
.attr('width', width + margins.left + margins.right + legendPanel.width)
.attr('height', height + margins.top + margins.bottom)
.append('g')
.attr('transform', 'translate(' + margins.left + ',' + margins.top + ')'),
xMax = d3.max(dataset, function(group) {
return d3.max(group, function(d) {
return d.x + d.x0;
});
}),
xScale = d3.scale.linear()
.domain([0, xMax])
.range([0, width]),
months = dataset[0].map(function(d) { return d.y; }),
_ = console.log(months),
yScale = d3.scale.ordinal()
.domain(months)
.rangeRoundBands([0, height], .1),
xAxis = d3.svg.axis()
.scale(xScale)
.orient('bottom'),
yAxis = d3.svg.axis()
.scale(yScale)
.orient('left'),
colours = d3.scale.category10(),
groups = svg.selectAll('g')
.data(dataset)
.enter()
.append('g')
.style('fill', function(d, i) {
return colours(i);
}),
rects = groups.selectAll('rect')
.data(function(d) { return d; })
.enter()
.append('rect')
.attr('x', function(d) { return xScale(d.x0); })
.attr('y', function(d, i) { return yScale(d.y); })
.attr('height', function(d) { return yScale.rangeBand(); })
.attr('width', function(d) { return xScale(d.x); })
.on('mouseover', function(d) {
var xPos = parseFloat(d3.select(this).attr('x')) / 2 + width / 2;
var yPos = parseFloat(d3.select(this).attr('y')) + yScale.rangeBand() / 2;
d3.select('#tooltip')
.style('left', xPos + 'px')
.style('top', yPos + 'px')
.select('#value')
.text(d.x);
d3.select('#tooltip').classed('hidden', false);
})
.on('mouseout', function() {
d3.select('#tooltip').classed('hidden', true);
})
svg.append('g')
.attr('class', 'axis')
.attr('transform', 'translate(0,' + height + ')')
.call(xAxis);
svg.append('g')
.attr('class', 'axis')
.call(yAxis);
svg.append('rect')
.attr('fill', 'yellow')
.attr('width', 160)
.attr('height', 30 * dataset.length)
.attr('x', width + margins.left)
.attr('y', 0);
series.forEach(function(s, i) {
svg.append('text')
.attr('fill', 'black')
.attr('x', width + margins.left + 8)
.attr('y', i * 24 + 24)
.text(s);
svg.append('rect')
.attr('fill', colours(i))
.attr('width', 60)
.attr('height', 20)
.attr('x', width + margins.left + 90)
.attr('y', i * 24 + 6);
});
</script>
</body>
</html>
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