Module 2: Production of pumpkins and squash

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		<title>My first stacked area chart</title>
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h3 {
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path:hover {
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            <h1>Production of pumpkins and squash</h1>
				<p>In the United States, pumpkins go hand in hand with the fall holidays of Halloween and Thanksgiving. An orange fruit harvested in October, this nutritious and versatile plant features flowers, seeds and flesh that are edible and rich in vitamins. Pumpkin is used to make soups, desserts and breads, and many Americans include pumpkin pie in their Thanksgiving meals. Carving pumpkins into jack-o’-lanterns is a popular Halloween tradition that originated hundreds of years ago in Ireland. Back then, however, jack-o’-lanterns were made out of turnips or potatoes; it wasn’t until Irish immigrants arrived in America and discovered the pumpkin that a new Halloween ritual was born.</p>
				<br><h3>Tonnes<strong> (m)</strong></h3></br>
				<div class='svg_holder'></div>	
			 <p class="source">Source:
				<a href="https://faostat.fao.org/site/567/DesktopDefault.aspx?PageID=567#ancor"> FAO.org</a>
			 </p>
        </div>
		<script type="text/javascript">

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

//Width, height, padding
			var w = 700;
			var h = 500;
			var padding = [ 20, 10, 50, 100 ];  //Top, right, bottom, left

var dateFormat = d3.time.format("%Y");

var xScale = d3.time.scale()
								.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(12)
							.tickFormat(function(d) {
								return dateFormat(d);
							});

var yAxis = d3.svg.axis()
							.scale(yScale)
							.orient("left")
							.ticks(6);

var color = d3.scale.category10();

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

var color = d3.scale.ordinal()
                        .range(["#fedeca", "#ffd4bb ", "#ffb99b ", "#fb925f ", "#ff4301"]);

//Load data
			d3.csv("productionOfPumpkins.csv", function(data) {
			
				var years = ["1961", "1962", "1963", "1964", "1965", "1966", "1967", "1968", "1969", "1970", "1971", "1972", "1973", "1974", "1975", "1976", "1977", "1978", "1979", "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"];

var dataset = [];

for (var i = 0; i < data.length; i++) {

dataset[i] = {
						country: data[i].countryName,
						pumpkins: []
					};

for (var j = 0; j < years.length; j++) {

var amount = null;

if (data[i][years[j]]) {
							amount = +data[i][years[j]];
						}

dataset[i].pumpkins.push({
							x: years[j],
							y: amount
						});
					}
				}

stack(dataset);

xScale.domain([ 
					d3.min(years, function(d) {
						return dateFormat.parse(d);
					}),
					d3.max(years, function(d) {
						return dateFormat.parse(d);
					})
				]);
		
				var totals = [];

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

yScale.domain([ d3.max(totals), 0 ]);
			
				var paths = svg.selectAll("path")
					.data(dataset)
					.enter()
					.append("path")
					.attr("class", "area")
					.attr("d", function(d) {
						return area(d.pumpkins);
					})
					.attr("stroke", "none")
					.attr("fill", function(d, i) {
						return color(i);
					});

paths.append("title")
					.text(function(d) {
						return d.country;
					});

//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);

});

</script>
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