A 19 Year Comparison of Regional UK House Prices

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		<meta charset="utf-8">
		<title>Scatterplot</title>
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		<style type="text/css">
			
			body {
				background-color: white;
				font-family: Helvetica, Arial, sans-serif;
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h1 {
				font-size: 24px;
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p {
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			.axis path,
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			.axis text {
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				font-size: 11px;
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<h1>A 19 Year Regional UK House Pricing Review</h1>

<p>A comparison of mean average housing prices across regions.</p>
		<p> Y-axis=1996. X-axis=2014. Hover of circles to see Region being compared.</p>
		<p>	Source: <a href="https://data.london.gov.uk/dataset/average-house-prices-borough">London Data Store</a>, 2014</p>

var w = 1200;
			var h = 500;
			var padding = [ 20, 10, 50, 100 ];  //Top, right, bottom, left

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								.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(25);

var yAxis = d3.svg.axis()
							.scale(yScale)
							.orient("left")
							.ticks(19);

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

d3.csv("MeanAnnualHousePricesUK.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.Year1996;
					}),
					d3.min(data, function(d) {
						return +d.Year1996;
					})
				]);

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

circles.attr("cx", function(d) {
						return xScale(d.Year2014);
					})
					.attr("cy", function(d) {
						return yScale(d.Year1996);
					})
					//.attr("r", 4)
					//.attr("fill", "steelblue")
					//.append("title")
					//.text(function(d) {
					//	return d.Region + "'s Average Annual House Price in 2014 was " + d.Year2014 + ", and in 1996 was " + d.Year1996;
					//});
			        .attr("r", 0.1)
					.attr("fill", "steelblue")
					.append("title")
					.text(function(d) {
						return d.Region + "'s Average Annual House Price in 1996 was " + d.Year1996 + ", and in 2014 was " + d.Year2014;
					});

circles.sort(function(a, b) {
						return d3.ascending(+a.Year2014, +b.Year2014);
					})
					.transition()
					.delay(function(d, i) {
						return i * 50;
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					.duration(2000)
					.attr("r", 4);

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

});

</script>

</body>
</html>

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