Income per capita vs. Life expectancy

<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8">
		<title>Income per capita vs. Life expectancy</title>
		<script type="text/javascript" src="https://d3js.org/d3.v3.js"></script>
		<style type="text/css">
			
			body {
				background-color: #FFF;
				font-family: HelveticaNeue;
			}

h1 {
				font-size: 24px;
				color: #0D5047;
				margin: 0;
			}

svg {
				background-color: #FFF;
			}

circle:hover {
				fill: #0D5047;
			}

.axis path,
			.axis line {
				fill: none;
				stroke: black;
				shape-rendering: crispEdges;
			}

.axis text {
				font-size: 9px;
			}

.x.label,
			.y.label {
				font-size: 14px;
			}

</style>
	</head>
	<body>
		<h1>Income per capita vs. Life expectancy</h1>

var w = 700;
			var h = 600;
			var padding = [20,10,50,50];

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(10);

var yAxis = d3.svg.axis()
							.scale(yScale)
							.orient("left")
							.ticks(10);

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

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

data.sort(function(a, b) {
					return d3.descending(+a.incomePerCapita, +b.incomePerCapita);
				});

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

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

var circles = svg.selectAll("circle")
								.data(data)
								.enter()
								.append("circle");

circles.attr("cx", function(d) {
					return xScale(d.incomePerCapita);
					})
					.attr("cy", function(d) {
						return yScale(d.lifeExpectancy);
					})
					.attr("r", 0.1)
					.attr("fill", "#6BA099")
					.append("title")
					.text(function(d) {
						return d.country + "'s income per capita is " + d.incomePerCapita + ", and life expectancy is " + d.lifeExpectancy + " years";
					});

circles.sort(function(a, b) {
						return d3.ascending(+a.incomePerCapita, +b.incomePerCapita);
					})
					.transition()
					.delay(function(d, i) {
						return i * 5;
					})
					.duration(500)
					.attr("r", 4);

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

svg.append("text")
    				.attr("class", "x label")
    				.attr("text-anchor", "end")
    				.attr("x", w - 50)
    				.attr("y", h - 6)
    				.text("Income per capita");

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

svg.append("text")
				    .attr("class", "y label")
				    .attr("text-anchor", "end")
				    .attr("y", 3)
				    .attr("x", -20)
				    .attr("dy", ".75em")
				    .attr("transform", "rotate(-90)")
				    .text("Life expectancy");

});

</script>

</body>
</html>

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

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