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<!DOCTYPE html>
<html>
<head>
<title>Sparky</title>
<script type="text/javascript" src="lib/raphael/raphael-min.js"></script>
<script type="text/javascript" src="src/sparky.js"></script>
<style type="text/css">
@import url(style/screen.css);
</style>
</head>
<body>
<div id="intro">
<h1>Sparky</h1>
<p><a class="fw">Sparklines</a> are intense, simple, word-sized graphics.
Sparky is a JavaScript library for drawing them dynamically in
your web browser. In the words of
<a href="http://www.edwardtufte.com">Edward Tufte</a>,
who coined the term:</p>
<blockquote>
Sparklines mean that graphics are no longer cartoonish special
occasions with captions and boxes, but rather a sparkline graphic
can be everywhere a word or number can be: embedded in a sentence,
table, headline, map, spreadsheet, graphic.
</blockquote>
<p>You can read more about sparklines and their many uses on
<a href="http://en.wikipedia.org/wiki/Sparkline">Wikipedia</a>,
<a href="http://www.edwardtufte.com/bboard/q-and-a-fetch-msg?msg_id=0001OR">Tufte's site</a>,
or in his book, <a href="http://www.edwardtufte.com/tufte/books_be"><i>Beautiful Evidence</i></a>.</p>
</div>
<div id="examples">
<h2>Examples</h2>
<div class="example">
<p><span class="sparkline"
data-points="145,136,145,136,127,136,145,136,136,172,127,136,127,127,172,172,181,172,200,127,136,118,109,100,128"
data-preset="hilite-last"></span>
<label>glucose</label> <var>128</var></p>
<p><span class="sparkline"
data-points="20,19,20,20,20,20,20,20,25,25,18,14,14,18,18,20,20,20,18,18,16,16"
data-range_min="16"
data-range_max="20"
data-preset="hilite-last"></span>
<label>respiration</label> <var>16</var></p>
<p><span class="sparkline"
data-points="-1,-2,-2,-4,-3,-1,1,1,2,3,5,3,2,3,4"
data-baseline="0"
data-preset="zero-bars"></span></td>
<label>some bars</label></p>
<p><span class="sparkline"
data-points="10,12,11,16,28,29,27,24,22,15,10,9,10,10,26,35,32,28,24,23,21,20"
data-preset="gray-area"></span></td>
<label>an elevation profile</label></p>
<p><span class="sparkline"
data-points="1,1,0,1,0,0,0,1,.5,0,1,1,0,1,0,1,0,0,1,.5,1,1,1,1,0,0,1,1,0,1,0,0,1,0,0,.5,1"
data-preset="binary"></span></td>
<label>binary data</label></p>
</div>
</div>
<div id="features">
<h2>Features</h2>
<h3>What it do</h3>
<p>Sparky supports line
<span class="sparkline" data-preset="hilite-last" data-points="5,6,8,7,5,3,2,3,8,7"></span>,
bar <span class="sparkline" data-preset="zero-bars" data-points="5,6,8,7,5,3,2,3,8,7"></span>, and
area <span class="sparkline" data-preset="gray-area" data-points="5,6,8,7,5,3,2,3,8,7"></span>
charts. Line and area charts can include variably colored and sized dots
<span class="sparkline" data-preset="rainbow" data-points="5,6,8,7,5,3,2,3,8,7"></span>.
Both dot and bar colors can be defined either as a single value
for the entire data set, or as functions to be evaluated once per
data point.</p>
<p>Sparky can also render larger time series graphics:</p>
<div class="sparkline"
data-preset="big"
data-points="9.1,9.0,8.9,9.0,9.0,9.1,9.1,9.1,9.0,8.9,8.7,8.5">
<p class="caption">2011 Unemployment rate for persons 16 and over, from the <a href="http://data.bls.gov/timeseries/LNS14000000">Bureau of Labor Statistics</a></p>
</div>
<h3>What it don’t</h3>
<p>Sparky does not support chart axes (or any other form of
labeling), or the rendering of multiple data series in a single
graphic.</p>
</div>
<div id="about">
<h2>About</h2>
<p>Sparky is a project by <a href="http://stamen.com/studio/shawn">Shawn Allen</a>,
Design Director at <a href="http://stamen.com">Stamen</a>.</p>
<h3>Open Source</h3>
<p>Sparky is open source and free for the taking. Feel free to
<a href="http://github.com/shawnbot/sparky">fork the code on Github</a>,
and please <a href="http://github.com/shawnbot/sparky/issues">file a bug report</a>
if you find a problem.</p>
<h3>Dependencies</h3>
<p>Sparky depends on <a href="http://raphaeljs.com/">Raphaël</a>
for cross-browser vector rendering. It plays nicely with (and uses,
if possible) <a href="http://mbostock.github.com/d3/">d3.js</a> for
scales and general data munging.</p>
</div>
<script type="text/javascript" defer>
sparky.presets.set("big", {
width: 450,
height: 100,
padding: 10,
line_stroke: "red",
line_stroke_width: 2,
dot_radius: function(d, i) {
return this.last ? 5 : 0;
},
dot_fill: "red",
dot_stroke: "white",
dot_stroke_width: 1
});
sparky.presets.set("rainbow", {
padding: 5,
line_stroke: "none",
dot_radius: function() {
return 1.5 + Math.random() * 3.5;
},
dot_fill: function() {
var r = (~~(Math.random() * 16)).toString(16),
g = (~~(Math.random() * 16)).toString(16),
b = (~~(Math.random() * 16)).toString(16);
return ["#", r, g, b].join("");
}
});
var sparks = document.querySelectorAll(".sparkline"),
len = sparks.length;
for (var i = 0; i < len; i++) {
var el = sparks[i],
data = sparky.parse.numbers(el.getAttribute("data-points")),
preset = sparky.presets.get(el.getAttribute("data-preset")),
options = sparky.util.getElementOptions(el, preset);
sparky.sparkline(el, data, options);
}
</script>
</body>
</html>