Module 6 - Barcelona Family Income Index

<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8">
		<title>Multiple Lines - BCN Family Income Index</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;
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h1 {
				font-size: 24px;
				margin: 0;
			}

h2 {
				font-size: 14px;
				font-weight: bold;
				margin: 0;
			}

p {
				font-size: 14px;
				margin-top: 16px;
				max-width: 600px;
				margin: 0px;
			}

svg {
				background-color: white;
			}

circle:hover {
				fill: orange;
			}

.key {
				font-size: 12px;
				margin: 8px;
			}

g.districte path {
				fill: "none";
				stroke: red;
				stroke-width: 3;
				opacity: .6;
			}

g.districte path:hover {
				fill: "none";
				stroke: darkred;
				stroke-width: 5;
				opacity: .9;
			}

g.highlight path {
				stroke: teal;
				stroke-width: 2.5;
				opacity: .6;
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g.highlight path:hover {
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			.axis line {
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				shape-rendering: crispEdges;
				stroke-width: 1;

}
			
			.axis text {
				font-family: sans-serif;
				font-size: 11px;
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.leyenda1 {
				font-family: sans-serif;
				font-size: 11px;
				font-weight: bold;
				fill: teal;
			}
			.leyenda2 {
				font-family: sans-serif;
				font-size: 11px;
				font-weight: bold;
				fill: red;
			}

</style>
	</head>
	<body>
		<h1>The rich neighborhoods, now, they are more rich</h1>

<h2>The Barcelona Family Income index by neighborhoods during the crisis, 2008-2013</h2>
<br>
		<p>As we can see, the economic crisis has increased the differences between the poor neighborhoods and the rich ones; we can say 'the rich, now, they are more rich'.</p>
		<p>Please enjoy comparing the evolution of neighborhoods from districts 5 and 8.</p>
		<br>
		<p class="key">Source: <a href="https://opendata.bcn.cat/opendata/es">OpenDataBCN</a>. (Index RFD Barcelona = 100)  -- --<a href="javascript:location.reload()" class="key">Click here to change the district</a> </p>

//Dimensions and padding
			var w = 600;
			var h = 600;
			var padding = [ 20, 10, 50, 60 ];  //Top, right, bottom, left

//Set up date formatting and years
			var dateFormat = d3.time.format("%Y");

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

//Configure axis generators
			var xAxis = d3.svg.axis()
							.scale(xScale)
							.orient("bottom")
							.ticks(6)
							.tickFormat(function(d) {
								return dateFormat(d);
							});

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

//Configure line generator
			var line = d3.svg.line()
				.x(function(d) {
					return xScale(dateFormat.parse(d.year));
				})
				.y(function(d) {
					return yScale(+d.valor);
				});

//Create the empty SVG image
			var svg = d3.select("body")
						.append("svg")
						.attr("width", w)
						.attr("height", h);

//Load data
			d3.csv("BCN_family_Income_2008_2013.csv", function(data) {

//Data is loaded in, but we need to restructure it.

//Note that this is an array of objects. Each object
				//contains two values, 'country' and 'emissions'.
				//The 'emissions' value is itself an array, containing
				//more objects, each one holding 'year' and 'amount' values.

//New array with all the years, for referencing later
				var years = ["2008", "2009", "2010", "2011", "2012", "2013"];

//Create a new, empty array to hold our restructured dataset
				var dataset = [];

//Loop once for each row in data
				for (var i = 0; i < data.length; i++) {

//Create new object with this country's name and empty array
					dataset[i] = {
						nomBarri: data[i].Barri,
						familyIndex: [],
						Districte: data[i].Districte
					};

//Loop through all the years
					for (var j = 0; j < years.length; j++) {

// If value is not empty
						if (data[i][years[j]]) {
							//Add a new object to the emissions data array
							//for this country
							dataset[i].familyIndex.push({
								year: years[j],
								valor: data[i][years[j]],
								millora: +data[i][years[j]] - +data[i][years[0]]
							});
						}

}
				};
				
				//Uncomment to log the original data to the console
				//console.log(data);

//Uncomment to log the newly restructured dataset to the console
				//console.log(dataset);

//console.log(dataset[0].Districte);
				// console.log(dataset[i].familyIndex[5].valor);
				// }

//Set scale domains
				xScale.domain([ 
					d3.min(years, function(d) {
						return dateFormat.parse(d);
					}),
					d3.max(years, function(d) {
						return dateFormat.parse(d);
					})
				]);

yScale.domain([ 
					d3.max(dataset, function(d) {
						return d3.max(d.familyIndex, function(d) {
							return +d.valor;
						});
					}),
					0
				]);

//Make a group for each district and put the color green or red 
				var groups = svg.selectAll("g")
					.data(dataset)
					.enter()
					.append("g")
					.attr("id",  function(d) {
				 		return d.Districte;
				 	})
					.classed("districte", function(d) {
						if ( d.Districte == QueDistrito ) {
						 	return true;
	 						} else {
						 	return false;
						 }
					 })
					.classed("highlight", function(d) {
						if (d.Districte == QueDistrito && d.familyIndex[5].millora > 0) {
						 	return true;
	 						} else {
						 	return false;
						 }
					 });

//Append a title with the District name (so we get easy tooltips)
				groups.append("title")
					.text(function(d) {
						return d.nomBarri + ", Districte " + d.Districte;
					});

//Within each group, create a new line/path,
	//binding just the index data to each one

groups.selectAll("path")
					.data(function(d) {
						return [ d.familyIndex ];
					})
					.enter()
					.append("path")
					.attr("class", "line")
					.attr("d", line)
					.attr("fill", "none")
				 	.attr("stroke", "steelblue")
					.attr("stroke-width", 2)
					.attr("opacity", .1);

//Leyendas de ejes
				svg.append("g")
					.attr("class", "x axis")
					.attr("transform", "translate(0," + (h - padding[2]) + ")")
					.call(xAxis)
					.append("text")
                    .attr("x", w - 80)
                    .attr("y", -6)
                    .style("text-anchor", "end")
                    .text("Years");

svg.append("g")
					.attr("class", "y axis")
					.attr("transform", "translate(" + (padding[3]) + ",0)")
					.call(yAxis)
					.append("text")
                    .attr("x", 10)
                    .attr("y", 30)
                    .text("Index RFD Barcelona = 100");

//Leyendas
				svg.append("text")
					.attr("x",padding[3]+20)
					.attr("y",h-padding[2] -20)
					.text("Index 2013 > Index 2008")
					.attr("class","leyenda1");

svg.append("text")
					.attr("x",padding[3]+20)
					.attr("y",h-padding[2] -5)
					.text("Index 2013 < Index 2008")
					.attr("class","leyenda2");

svg.append("text")
					.attr("x",padding[3]+20)
					.attr("y",h-padding[2] -38)
					.text("Destacados los barrios del distrito " + QueDistrito)
					.attr("class","key");

});
	
	var QueDistrito = prompt("Choose a District (1-10):");

</script>

</body>
</html>

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

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