MODULE 5 - Exercise

<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8">
		<title>Transition 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>Corruption Perceptions by Country</h1>

<p>The &ldquo;Corruption Perceptions Index 2014&rdquo; Scores vs. their Standard Errors.</p>

<p>Score Scale: 0 (highly corrupt) to 100 (very clean)</p>

<p></p>

var w = 1200;
			var h = 600;
			var padding = [ 20, 10, 50, 120 ];  //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("CorruptionPerceptionsIndex2014.csv", function(data) {

xScale.domain([ 
					0, 
					d3.max(data, function(d) {
						return +d.CPI_2014_Score;
					})
				]);

yScale.domain([
					d3.max(data, function(d) {
						return +d.Standard_Error;
					}),
					0
				]);

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

circles.attr("cx", function(d) {
						return xScale(d.CPI_2014_Score);
					})
					.attr("cy", function(d) {
						return yScale(d.Standard_Error);
					})
					.attr("r", 0.1)
					.attr("fill", "steelblue")
					.append("title")
					.text(function(d) {
						return d.Country + "'s CPI 2014 is " + d.CPI_2014_Score + ", with a " + d.Standard_Error	 + " Standard Error";
					});

circles.sort(function(a, b) {
						return d3.ascending(+a.CPI_2014_Score, +b.CPI_2014_Score);
					})
					.transition()
					.delay(function(d, i) {
						return i * 10;
					})
					.duration(500)
					.attr("r", 4);

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

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

svg.append("text")
					.attr("x", (w - padding[3]) * 0.5 + padding[3])
					.attr("y", h - (padding[0] * 0))
					.attr("text-anchor", "middle")
					.text("CPI 2014 Scores");

svg.append("text")
					.attr("x", (padding[3] * 0.5))
					.attr("y", h * 0.5 )
					.attr("text-anchor", "middle")
					.text("Standard Error")
					.attr("transform", "rotate(-90, 40, 250)");

});

</script>

</body>
</html>

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

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