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d3 introduction: animated graph in 11 LOC
<!DOCTYPE html>
<html manifest="cache.manifest">
<head> <title>d3 example</title> </head>
<body>
<div id='d3TutoGraphContainer'></div>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript" src="http://d3js.org/d3.v2.min.js"></script>
<script type="text/javascript">
// Suppose there is currently one div with id "d3TutoGraphContainer" in the DOM
// We append a 600x300 empty SVG container in the div
var chart = d3.select("#d3TutoGraphContainer").append("svg").attr("width", "600").attr("height", "300");
// Create the bar chart which consists of ten SVG rectangles, one for each piece of data
var rects = chart.selectAll('rect').data([1 ,4, 5, 6, 24, 8, 12, 1, 1, 20])
.enter().append('rect')
.attr("stroke", "none").attr("fill", "rgb(7, 130, 180)")
.attr("x", 0)
.attr("y", function(d, i) { return 25 * i; } )
.attr("width", function(d) { return 20 * d; } )
.attr("height", "20");
// Transition on click managed by jQuery
rects.on('click', function() {
// Generate randomly a data set with 10 elements
var newData = [];
for (var i=0; i<10; i+=1) { newData.push(Math.floor(24 * Math.random())); }
// Generate a random color
var newColor = 'rgb(' + Math.floor(255 * Math.random()) +
', ' + Math.floor(255 * Math.random()) +
', ' + Math.floor(255 * Math.random()) + ')';
rects.data(newData)
.transition().duration(2000).delay(200)
.attr("width", function(d) { return d * 20; } )
.attr("fill", newColor);
});
</script>
</body>
</html>
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