Created
July 10, 2014 05:44
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Simple animated bar charts using D3 and data-attributes
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
.chart { | |
height: 70px; | |
width: 300px; | |
border-bottom: 1px solid #ccc; | |
display: block; | |
margin: 1em; | |
} | |
.chart .bar { | |
fill: #ccc; | |
} | |
</style> | |
<svg class="chart" data-bar-chart data-data="23,43,10,13,10,20,30,23,43,10,13,10,20,30" data-bar-width="15"></svg> | |
<svg class="chart" data-bar-chart data-data="19,65,23,31,32,44,5,32,23,23,54,65" data-bar-width="15"></svg> | |
<svg class="chart" data-bar-chart data-data="34,43,65,21,5,43,43,32,32,12,31,32,12,32,23,12" data-bar-width="15"></svg> | |
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> | |
<script src="http://d3js.org/d3.v3.min.js"></script> | |
<script> | |
$('[data-bar-chart]').each(function (i, svg) { | |
var $svg = $(svg); | |
var data = $svg.data('data').split(',').map(function (datum) { | |
return parseFloat(datum); | |
}); | |
var barWidth = parseFloat($svg.data('bar-width')) || 15; | |
var barSpace = parseFloat($svg.data('bar-space')) || 0.5; | |
var chartHeight = $svg.outerHeight(); | |
var y = d3.scale.linear() | |
.domain([0, d3.max(data)]) | |
.range([0, chartHeight]); | |
d3.select(svg) | |
.selectAll("rect") | |
.data(data) | |
.enter().append("rect") | |
.attr("class", "bar") | |
.attr("width", barWidth) | |
.attr("x", function (d, i) { return barWidth*i + barSpace*i; }) | |
.attr("y", chartHeight) | |
.attr("height", 0) | |
.transition() | |
.delay(function (d, i) { return i*100; }) | |
.attr("y", function (d, i) { return chartHeight-y(d); }) | |
.attr("height", function (d) { return y(d); }); | |
}); | |
</script> |
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