Module 2

<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8">
		<title>Onderwijs in Nederland</title>
		<script type="text/javascript" src="https://d3js.org/d3.v3.js"></script>
		<style type="text/css">
			
			body {
				background-color: #eeeeee;
				font-family: Helvetica, Arial, sans-serif;
			}

h1 
            {font-family: sans-serif;
             font-weight: 100;
             font-size: 20px;
             color: steelblue;
             padding-left: 50px; 
            } 
            
			p 
            {font-family: sans-serif;
             font-weight: 100;
             font-size: 11px;
             padding-left: 50px; 
                 line-height: 15px;
               
            } 
             
            a:link {
				text-decoration: none;
				color: gray;
			}

a:hover {
				text-decoration: underline;
			}

a:visited {
				color: steelBlue;
			}

a:active {
				color: steelBlue;
			}
        
           
            path:hover {
				fill: #eeeeee;
			}
            
            text 
            {font-family: sans-serif;
             font-size: 9px;
            }
            
            svg {
				background-color: white;
			}
            
            #container {
				width: 700px;
				margin-left: auto;
				margin-right: auto;
				margin-top: 25px;
				padding: 25px;
				background-color: white;
				box-shadow: 1px 1px 1px 1px #ccc;  
            }

.axis path,
			.axis line {
				fill: none;
				stroke: black;
				shape-rendering: crispEdges;
			}
			
			.axis text {
				font-family: sans-serif;
				font-size: 9px;
			}
            
            #tooltip {
                position: absolute;
                padding:2px;
                background-color: antiquewhite;
                -webkit-border-radius: 50px;
                -moz-border-radius: 50px;
                border-radius: 50px;
                pointer-events: none;
                
            }

#tooltip.hidden {
                display: none;
            }

#tooltip p {
                padding-left: 15px; 
                padding-right: 15px;
                font-family: sans-serif;
                font-size: 10px;
                line-height: 15px;
               
            }

</style>

</head>
	
    <body>

<div id="tooltip" class="hidden">
            <p><span id="value"></span></p>
        </div>
        
        
        <div id="container">
		  <h1>Aantal leraren in Nederland</h1>
          <p>In Nederland zijn, als we de universiteiten buiten beschouwing laten, zo'n 250.000 leraren werkzaam. In het primaire onderwijs verreweg het meest: 130.000.

De cijfers zijn afgeleid uit de omvang van het totale personeelsbestand (in personen) en het aandeel onderwijzend personeel. Het onderwijsondersteunende personeel is niet meegeteld. </p>
          <p>Bronnen: <a href="https://stamos.nl/index.rfx">Stamos</a> en <a href="https://www.datagraver.com/case/aantal-leraren-in-nederland">Datagraver</a>, 2015</p>
        </div>

//Set up stack method
			var stack = d3.layout.stack()
							.values(function(d) {
								return d.leraren;  
							})
							.order("reverse");
            
            
            
//Dimensions and padding
			var w = 700;
			var h = 400;
			var padding = [ 20, 10, 50, 100 ];  //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(15)
							.tickFormat(function(d) {
								return dateFormat(d);
							});

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

//Configure area generator
			var area = d3.svg.area()
				.x(function(d) {
					return xScale(dateFormat.parse(d.x));
				})
				.y0(function(d) {
					return yScale(d.y0);  //Updated
				})
				.y1(function(d) {
					return yScale(d.y0 + d.y);  //Updated
				});

//Easy colors accessible via a 10-step ordinal scale
			var color = d3.scale.category20c();

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

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

var years = ["2000", "2001", "2002", "2003", "2004", "2005", "2006", "2007", "2008", "2009", "2010", "2011", "2012"];

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

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

//Create new object with this education's name and empty array
					dataset[i] = {
						type: data[i].Onderwijs,
						leraren: []
					};

//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 emissions data array
						//for this country
						dataset[i].leraren.push({
							x: years[j],
							y: amount
						});

}

}		
			
//Stack the data!
				stack(dataset);

//Set scale 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 bindex 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].leraren[i].y;
					}
				}

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

//                
////Make a group for each type
//				var groups = svg.selectAll("g")
//					.data(dataset)
//					.enter()
//					.append("g");

//Make a path for each type
				var paths = svg.selectAll("path")
					.data(dataset)
					.enter()
					.append("path")
					.attr("class", "area")
					.attr("d", function(d) {
						//Calculate path based on only d.emissions array,
						//not all of d (which would include the country name)
						return area(d.leraren);
					})
					.attr("stroke", "none")
					.attr("fill", function(d, i) {
						return color(i);
					});
                
                paths.append("title")
					.text(function(d) {
						return d.type;
					});
//                
////Name type                         
//                
//					paths.data(function(d) {
//						return [ d.type ];
//                    });	             
////                
////Tooltips             
//                
//                paths.on("mouseover", function(d) {
//
//                //location tooltip
//                var xPosition = (d3.event.pageX);
//                var yPosition = (d3.event.pageY-30);
//                    
//                    
//                //Update the tooltip position and value
//                d3.select("#tooltip")
//                  
//                  .style("left", xPosition + "px")
//                  .style("top", yPosition + "px")
//                  .select("#value")
//                  .text(d)
//                    
//                //Show the tooltip
//                d3.select("#tooltip").classed("hidden", false);
//                })
//
//                .on("mouseout", function() {
//
//                //Hide the tooltip
//                d3.select("#tooltip").classed("hidden", true);
//
//                });                        
// 
              
                 
//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);
                
                
 //y axis name       
//                svg.append("text")  
//                    .attr("x",(padding[3]-50))
//                    .attr ("y", h/2-6)
//                    .text("aantal leraren");      
// 
                
                
                 svg.append("text")
    .attr("transform", "rotate(-90)")
    .attr("y", 35)
    .attr("x",0 - (h / 2))
    .attr("dy", "1em")
    .style("text-anchor", "middle")
    .text("aantal leraren");  
                
                
 //x axis name       
                svg.append("text")  
                    .attr("x",w/2)
                    .attr ("y",h-10)
                    .text("jaar");               
                
                
                
                
//End data load function
			});

</script>

</body>
</html>

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

https://d3js.org/d3.v3.js