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Distance travelled by car has increased

<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8">
		<title>module 2 project</title>
		<script type="text/javascript" src="//d3js.org/d3.v3.min.js"></script>
		<link href='https://fonts.googleapis.com/css?family=Open+Sans:400,300&subset=latin,greek' rel='stylesheet' type='text/css'>
		<style type="text/css">

body {
				background-color: #EAEAE5;
			;
				font-family: 'Open Sans', sans-serif;
			}

#container{
				width: 850px;
				margin-left: auto;
				margin-right: auto;
				margin-top: 50px;
				padding: 50px;
				background-color: white;
				/*border: 1px solid lightgray;*/
				border-radius: 5px;
				background:white;
				box-shadow: 0px 0px 5px 2px lightgray;
			}

h1 {
				font-size: 38px;
				margin: 0 0 3px 40px;
				font-weight: 100;
			}

h2 {
				font-size: 21px;
				color:#777;
				font-weight: 400;
				margin:0 0 20px 40px;
			}

p {
				font-size: 16px;
				font-weight: 400;
					color:#777;
					margin-bottom: 0;
				
				
			}

p .note{
				font-size: 16px;
				text-decoration:none;
					color:#777;
			}

p .note a{
				
				text-decoration:none;
					
			}

svg {
				background-color: white;
				margin: auto;
			}

/*path:hover {
			fill:#8f9d00;
       		fill-opacity:0.9;
			
			}*/

path{
				fill-opacity:.875;
			}
			
			.axis path,
			.axis line {
				fill: none;
				stroke: #777;
				
				shape-rendering: crispEdges;
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.y.axis line{
				stroke-dasharray: 2,2;
			}

.y.axis path{
				display: none;
			}
			
			.axis text {
				font-family: 'Open Sans', sans-serif;
				font-size: 16px;
				color:#777;
			}

.highlight{
				fill:#94a000;
			}

/* Styling for new <div> */
				
					#tooltip {
		  				position: absolute;
		  				width: 200px;
		  				height: auto;
		  				padding: 10px;
						color: #777;
		  				background-color: rgba(255, 255, 255, 0.9);
		  				-webkit-border-radius: 5px;
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					}
					#tooltip.hidden {
		  				display: none;
					}
					#tooltip p {
		  				margin: 0;
		  				font-size: 10px;
						text-align: left;
					}

</style>
	</head>
	<body>

<h1>Distance travelled by car has increased</h1>

<h2>Passenger transport by mode*, Great Britain, 1980 to 2013.<h2/>
		<p>Passenger kilometres (bn)</p>

//Set up stack method
			var stack = d3.layout.stack()
							.values(function(d) {
								return d.transport;
							})
							.order("reverse");

//Width, height, padding
			var w = 800;
			var h = 700;
			var padding = [ 0, 10, 50, 80 ];  //Top, right, bottom, left

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

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

//Configure area generator

//Configure area generator

//Easy colors accessible via a 10-step ordinal scale
			// var color = d3.scale.category10();
			var color = d3.scale.category10().range(["#b02d00", "#da9100", "#7b2b00"]);

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

//Load data
			d3.csv("1-Passenger-transport-by-modev3.csv", function(data) {

//Uncomment to log the newly loaded data to the console
				console.log(data);

//Data is loaded in, but we need to restructure it.
				//Remember, each line requires an array of x/y pairs;
				//that is, an array of arrays, like so:
				//
				//	[ [x: 1, y: 1], [x: 2, y: 2], [x: 3, y: 3] ]
				//
				//Our x value will be the year, and y will be the amount
				//of CO2.  We also need to know which country belongs to 
				//each line, so we will build an array of objects that is
				//structured like this:
				//
				/*

[
						{
							country: "Australia",
							transport: [
										{ x: "1961", y: 90589.568 },
										{ x: "1962", y: 94912.961 },
										{ x: "1963", y: 101029.517 },
										…
									   ]
						},
						{
							country: "Bermuda",
							transport: [
										{ x: "1961", y: 176.016 },
										{ x: "1962", y: 157.681 },
										{ x: "1963", y: 150.347 },
										…
									   ]
						},
						…
					 ]

*/
				//
				//Note that this is an array of objects. Each object
				//contains two values, 'country' and 'transport'.
				//The 'transport' value is itself an array, containing
				//more objects, each one holding x and y values.
				//
				//The x (year) values have to be strings in this case,
				//because the date format function expects a string
				//to parse into a Date object.

//New array with all the years, for referencing later
				var years = [ "1980", "1981", "1982", "1983", "1984", "1985", "1986", "1987", "1988", "1989", "1990", "1991", "1992", "1993", "1994", "1995", "1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003", "2004", "2005", "2006", "2007", "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] = {
						transportMode: data[i].transport,
						transport: []
					};

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

//Default value, used in case no value is present
						var amount = null;

// If value is not empty
						if (data[i][years[j]]) {
							amount = +data[i][years[j]];
						}

//Add a new object to the transport data array
						//for this country
						dataset[i].transport.push({
							x: years[j],
							y: amount
						});

}

//Stack the data!
				stack(dataset);

//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);

//Now that the data is ready, we can check its
				//min and max values to set our scales' domains!
				xScale.domain([ 
					d3.min(years, function(d) {
						return dateFormat.parse(d);
					}),
					d3.max(years, function(d) {
						return dateFormat.parse(d);
					})
				]);

//Need to recalcluate the max value for yScale  
				//differently, now that everything is stacked.

//Loop once for each year, and get the total value
				//of CO2 for that year.
				var totals = [];

for (i = 0; i < years.length; i++) {
					totals[i] = 0;
					for (j = 0; j < dataset.length; j++) {
						totals[i] += dataset[j].transport[i].y;
					}
				}

yScale.domain([ d3.max(totals), 0 ]);

//Areas
				//
				//Now that we are creating multiple paths, we can use the
				//selectAll/data/enter/append pattern to generate as many
				//as needed.

//Make a path for mode of transport
				var paths = svg.selectAll("path")
					.data(dataset)
					.enter()
					.append("path")
					.attr("class", "area")
					.attr("fill", "#B02D00")
					.attr("d", function(d) {
						//Calculate path based on only d.transport array,
						//not all of d (which would include the country name)
						return area0(d.transport);
					})
					//tooltip
						.on("mouseover", function(d, i) {
									d3.select(this)
									.classed("highlight", true);
									//Position the tooltip <div> and set its content
								
									d3.select("#tooltip")
										.style("left", (d3.event.pageX) + "px")     
                						.style("top", (d3.event.pageY - 5) + "px") 
                						.text(d.transportMode)
										.transition()        
                						.duration(500)
                					
										.style("opacity", 1);
									
									
								//Show the tooltip
									d3.select("#tooltip").classed("hidden", false);
										
								})
								.on("mouseout", function() {
									d3.select(this)
									.classed("highlight", false);
									//Hide the tooltip
									d3.select("#tooltip")
										.transition()        
                						.duration(500)    
										.style("opacity", 0);
								})

.transition()
					.duration(1700)
					.ease("cubic-in-out")

.attr("d", function(d) {
						//Calculate path based on only d.transport array,
						//not all of d (which would include the country name)
						return area(d.transport);
					})

.attr("stroke", "none")
					.attr("fill", function(d, i) {

return color(i);
					});

// Create labels
					svg.append("text")
                        .attr("x", 760)
                        .attr("y", 630)
                        .text("Rail")
                       .attr("text-anchor","end")
						.attr("opacity", 0)
						.transition()
						.delay(1000)
						.duration(1500)
						.attr("opacity", 1)
                        .attr("fill", "white")
                        .attr("font-size", "20px");;

svg.append("text")
                        .attr("x", 760)
                        .attr("y", 585)
                        .attr("text-anchor","end")
                        .text("Buses and coaches")
						.attr("opacity", 0)
						.transition()
						.delay(1000)
						.duration(1500)
						.attr("opacity", 1)
                        .attr("fill", "white")
                        .attr("font-size", "20px");

svg.append("text")
                        .attr("x", 760)
                        .attr("y", 530)
                        .text("Cars, vans and taxis")
                        .attr("text-anchor","end")
						.attr("opacity", 0)
						.transition()
						.delay(1000)
						.duration(1500)
						.attr("opacity", 1)
                        .attr("fill", "white")
                        .attr("font-size", "20px");

//Append a title with the country name (so we get easy tooltips)
				 // paths.append("title")
					// .text(function(d) {
					// 	return d.transportMode;
					// });

//Configure axis generators
			var xAxis = d3.svg.axis()
							.scale(xScale)
							.orient("bottom")
							.ticks(15)
							.tickPadding([padding[1]])
							.tickFormat(function(d) {
							return dateFormat(d);
							});

var yAxis = d3.svg.axis()
							.scale(yScale)
							.orient("left")
							.ticks(5)
								.tickPadding([padding[1]])
								.tickSize(- w);

//Create axes
				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);

});

//Add source to bottom of svg

d3.select("#container").append("p").html('<p class="note">*Total distance travelled (all modes) also includes distance travelled by motor cycle, pedal cycle and UK air travel.<p class="note">Source:<a style="color:steelblue", "text-decoration:none;" href="https://www.gov.uk/government/statistical-data-sets/ras30-reported-casualties-in-road-accidents"> Transport Statistics Great Britain: 2014, Table TSGB0101, DFT</a></p>');

</script>
	</body>
</html>

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