Chicago Crimes Arrest %

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		<meta charset="utf-8">
		<title>Transition Delays</title>
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			.axis text {
				font-family: sans-serif;
				font-size: 11px;
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<h1>Chicago Crime Types vs. Percent of Arrests</h1>

<p>Chicago crime data through the past year, upated regularly. Source: <a href="https://catalog.data.gov/dataset/crimes-one-year-prior-to-present-e171f">Data.Gov</a>, 2015</p>
		<script type="text/javascript">

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("chicagocrimes_arrests_locationpercent.csv", function(data) {

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

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

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

circles.attr("cx", function(d) {
						return xScale(d.crime_count_all);
					})
					.attr("cy", function(d) {
						return yScale(d.percent_crime_all);
					})
					.attr("r", 0.1)
					.attr("fill", "#6b6ecf")
					.append("title")
					.text(function(d) {
						return d.crime_description + " accounts for " + d.crime_count_all + " crimes, " + d.percent_crime_all + "% of which resulted in arrest";
					});

circles.sort(function(a, b) {
						return d3.descending(+a.percent_crime_all, +b.percent_crime_all);
					})
					.transition()
					.delay(function(d, i) {
						return i * 50;
					})
					.duration(2000)
					.attr("r", 6);

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>

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