#KnightD3 - Exercise Module 5: Scatterplot, transitions and delays

<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8">
		<title>#KnightD3 - Exercise Module 5: Scatterplot, transitions and delays</title>
		<script type="text/javascript" src="https://d3js.org/d3.v3.js"></script>
		<style type="text/css">
			
			body {
				background-color: white;
				font-family: Helvetica, Arial, sans-serif;
			}

h1 {
				font-size: 24px;
				margin: 0;
			}

p {
				font-size: 14px;
				margin: 10px 0 0 0;
			}

svg {
				background-color: white;
			}

circle:hover {
				fill: orange;
			}
			
			.axis path,
			.axis line {
				fill: none;
				stroke: black;
				shape-rendering: crispEdges;
			}
			
			.axis text {
				font-family: sans-serif;
				font-size: 11px;
			}

</style>
	</head>
	<body>

<h1>Facebook Government Report 2014</h1>

<p>Government's data requests to Facebook and % of requests in which Facebook was required by law to disclose at least some data in 2014. Source: <a href="https://govtrequests.facebook.com/" target="_blank">Facebook</a>, 2014</p>

var w = 700;
			var h = 600;
			var padding = [ 20, 10, 50, 50 ];  //Top, right, bottom, left

var xScale = d3.scale.linear()
								.range([ padding[3], w - padding[1] - padding[3] ]);
			
			var yScale = d3.scale.linear()
								.range([ padding[0], h - padding[2] ]);

var xAxis = d3.svg.axis()
							.scale(xScale)
							.orient("bottom")
							.ticks(15);

var yAxis = d3.svg.axis()
							.scale(yScale)
							.orient("left")
							.tickFormat(function(d) {
								return d + "%";
							});

var svg = d3.select("body")
						.append("svg")
						.attr("width", w)
						.attr("height", h);

d3.csv("FacebookGovReport20132014.csv", function(data) {

xScale.domain([ 
					d3.min(data, function(d) {
						return +d.year2014;
					}), 
					d3.max(data, function(d) {
						return +d.year2014;
					})
				]);

yScale.domain([
					d3.max(data, function(d) {
						return +d.dataProduced2014;
					}),
					d3.min(data, function(d) {
						return +d.dataProduced2014;
					})
				]);

var circles = svg.selectAll("circle")
								.data(data.filter(function(d) {return d.year2014 > 20;}))
								.enter()
								.append("circle");

circles.attr("cx", function(d) {
						return xScale(d.year2014);
					})
					.attr("cy", function(d) {
						return yScale(d.dataProduced2014);
					})
					.attr("r", 0.1)
					.attr("fill", "steelblue")
					.append("title")
					.text(function(d) {
						return d.year2014 + " " + d.country + "'s Government requests to Facebook, and for " + d.dataProduced2014 + "% of requests Facebook was required by law to disclose some data";
					});

circles.sort(function(a, b) {
						return d3.ascending(+a.year2014, +b.year2014);
					})
					.transition()
					.delay(function(d, i) {
						return i * 50;
					})
					.duration(2000)
					.attr("r", 5);

svg.append("g")
					.attr("class", "x axis")
					.attr("transform", "translate(0," + (h - padding[2] + 10) + ")")
					.call(xAxis);

svg.append("g")
					.attr("class", "y axis")
					.attr("transform", "translate(" + (padding[3] - 10) + ",0)")
					.call(yAxis);

});

</script>

</body>
</html>

Modified http://d3js.org/d3.v3.js to a secure url

https://d3js.org/d3.v3.js