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@armollica

armollica/.DS_Store

Last active December 5, 2017 22:44
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Split bar chart
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.block
height: 391
Raw
README.md
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index.html
<html>
<head>
<style>
.graphic {
font-family: sans-serif;
color: #333;
fill: #333;
margin: 40px auto;
}
.hed {
font-size: 24px;
font-weight: bold;
margin-bottom: 8px;
}
.dek {
font-size: 16px;
color: #555;
margin-bottom: 15px;
}
.footnote {
font-size: 12px;
color: #999;
margin-top: 10px;
}
.footnote a {
color: #888;
text-decoration: underline dashed;
}
.axis path,
.axis line {
display: none;
}
.axis text,
.column .title {
fill: #4c4c4c;
font-size: 12px;
}
.bar {
fill: steelblue;
}
.column .bar--underlying {
fill: #f3f3f3;
}
.label {
font-size: 12px;
fill: #4c4c4c;
}
.label--white {
fill: #fff;
}
</style>
</head>
<body>
<div class="graphic">
<div class="hed">Social network usage by high schoolers</div>
<div class="dek">Social network sites used by U.S. high school graduates, by frequency, 2014</div>
<svg class="chart"></svg>
<div class="footnote">Source: <a href="http://www.emarketer.com/Article/How-Elusive-Generation-Z-After-All/1011466">eMarketer</a>. Chart cloned from <a href="https://www.datawrapper.de/">Datawrapper</a> example.</div>
</div>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script src="https://d3js.org/d3-scale-chromatic.v1.min.js"></script>
<script>
var formatLabel = function(d) { return d3.format('.0f')(d * 100); };
var margin = { top: 30, right: 10, bottom: 10, left: 65 },
width = 600 - margin.left - margin.right,
height = 200 - margin.top - margin.bottom;
var graphic = d3.select('.graphic')
.style('width', width + 'px');
var svg = graphic.select('svg.chart')
.attr('width', width + margin.left + margin.right)
.attr('height', height + margin.top + margin.bottom)
.append('g')
.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
var x = function(d) { return d.share; },
xScale = d3.scaleLinear(),
xValue = function(d) { return xScale(x(d)); };
var y = function(d) { return d.social_network; },
yScale = d3.scaleBand().range([height, 0]).padding(0.1),
yValue = function(d) { return yScale(y(d)); },
yAxis = d3.axisLeft(yScale);
var column = function(d) { return d.usage; },
columnScale = d3.scaleBand().range([0, width]).paddingInner(0.075),
columnValue = function(d) { return columnScale(column(d)); };
var color = column,
colorScale = d3.scaleOrdinal(),
colorValue = function(d) { return colorScale(color(d)); };
function row(d) {
return {
usage: d.usage,
social_network: d.social_network,
share: +d.share
};
}
d3.csv('social-network-usage.csv', row, function(error, dataFlat) {
if (error) throw error;
var data = d3.nest()
.key(function(d) { return d.usage; })
.entries(dataFlat)
.map(function(d) { return { usage: d.key, values: d.values }; });
yScale.domain(dataFlat.map(y).reverse());
columnScale.domain(dataFlat.map(column));
xScale.range([0, columnScale.bandwidth()]);
// Excluding the light colors from the color scheme
var colorRange = d3.schemeBuPu[columnScale.domain().length + 2].reverse();
colorScale
.domain(dataFlat.map(color))
.range(colorRange);
svg.append('g').attr('class', 'axis axis--y')
.call(yAxis);
var gColumn = svg.append('g').attr('class', 'columns')
.selectAll('.column').data(data)
.enter().append('g')
.attr('class', 'column')
.attr('transform', function(d) { return 'translate(' + columnValue(d) + ',0)'; });
gColumn.append('text').attr('class', 'title')
.attr('dy', '-0.34em')
.text(column);
var bars = gColumn.append('g').attr('class', 'bars');
bars.selectAll('.bar--underlying').data(function(d) { return d.values; })
.enter().append('rect')
.attr('class', 'bar bar--underlying')
.attr('x', 0)
.attr('y', function(d) { return yScale(y(d)); })
.attr('width', xScale.range()[1])
.attr('height', yScale.bandwidth());
bars.selectAll('.bar--overlying').data(function(d) { return d.values; })
.enter().append('rect')
.attr('class', 'bar bar--overlying')
.attr('x', 0)
.attr('y', function(d) { return yScale(y(d)); })
.attr('width', function(d) { return xScale(x(d)); })
.attr('height', yScale.bandwidth())
.style('fill', colorValue);
function positionLabel(d) {
var xValue = xScale(x(d));
var xMax = xScale.range()[1];
if (xValue < (0.25 * xMax)) {
d3.select(this)
.classed('label--white', false)
.attr('x', xValue)
.attr('dx', 2);
} else {
d3.select(this)
.classed('label--white', true)
.attr('x', 0)
.attr('dx', 4);
}
d3.select(this)
.attr('y', yScale(y(d)) + (yScale.bandwidth() / 2))
.attr('dy', '0.33em');
}
gColumn.append('g').attr('class', 'labels')
.selectAll('.label').data(function(d) { return d.values; })
.enter().append('text')
.attr('class', 'label')
.text(function(d) { return formatLabel(x(d)); })
.each(positionLabel);
});
</script>
</body>
</html>
Raw
social-network-usage.csv
usage social_network share
A few times a day Facebook 0.47
Once a day Facebook 0.14
A few times a week Facebook 0.12
Occasionally Facebook 0.14
I don't use it Facebook 0.13
A few times a day Instagram 0.43
Once a day Instagram 0.08
A few times a week Instagram 0.07
Occasionally Instagram 0.08
I don't use it Instagram 0.34
A few times a day Twitter 0.28
Once a day Twitter 0.07
A few times a week Twitter 0.07
Occasionally Twitter 0.13
I don't use it Twitter 0.45
A few times a day Google+ 0.16
Once a day Google+ 0.07
A few times a week Google+ 0.08
Occasionally Google+ 0.21
I don't use it Google+ 0.48
A few times a day Tumblr 0.11
Once a day Tumblr 0.04
A few times a week Tumblr 0.06
Occasionally Tumblr 0.12
I don't use it Tumblr 0.66
A few times a day Pinterest 0.1
Once a day Pinterest 0.06
A few times a week Pinterest 0.1
Occasionally Pinterest 0.18
I don't use it Pinterest 0.56
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