MODULE4 Exercise: Adding Scales and Axes

<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8">
		<title>Water Consumption NY</title>
		<script type="text/javascript" src="https://d3js.org/d3.v3.js"></script>
		<style type="text/css">
            
            rect:hover {
				fill: #000000;
                opacity: 0.5;
			}
			
			body {
                font-family: Helvetica, Arial, sans-serif;
				background-color: #6dcff6;
			}
            
            p {
				color: #3e3b3b;
                font-size: 11px;
				line-height: 0;
                margin: 15px 0 15px 10px;
			}
            
            
            h1 {
                color: #ffffff;
                font-family:tahoma;
				margin: -9px 0 0 10px;
                font-weight:100;
                font-size:200%;
                letter-spacing:3pt;
            }
            
            h3 {
                background-color: #ffffff; 
                color: #666666;
                font-family: tahoma;
                font-size: 14px;
				margin: 15px 0 5px 10px;
                font-weight:100;
                text-indent:10px;
                letter-spacing:3pt;
            }

em {
				fill: #000000;
                opacity: 0.7;
				font-style: italic;
			}

rect:hover {
				fill: #000000;
                opacity: 0.2;
			} 
        
            
			svg {
				background-color: #6dcff6;
			}
            
            .axis path,
			.axis line {
				fill: none;
                opacity: 0.1;
				stroke: #3e3b3b;
				shape-rendering: crispEdges;
			}
			
			.axis text {
				font-family: sans-serif;
				font-size: 7px;
                opacity: 0.6;
			}
            
            .y.axis path,
			.y.axis line {
				opacity: 0;
			}
            
		</style>
	</head>
	<body>

<h3>WATER CONSUMPTION</h3>
        <h1>IN NEW YORK CITY</h1>
        
        		<p>A brief history of water consumption in the New York City Water Supply System (Based on New York City Census population).</p>

<p><em>Millions of gallons per day. Source: <a href="https://catalog.data.gov/dataset/water-consumption-in-the-new-york-city-3d2f0">DATA.GOV</a>, 2015.</em></p>
        
        
		<script type="text/javascript">		
            
        
            var w = 650;
			var h = 350;
            var padding = [ 0, 20, 20, 35 ];  //Top, right, bottom, left

var widthScale = d3.scale.linear()
								.range([ 0, w - padding[1] - padding[3] ]);
            
            var heightScale = d3.scale.ordinal()
								.rangeRoundBands([ padding[0], h - padding[2] ], 0.1);
            
            
            var xAxis = d3.svg.axis()
				            .scale(widthScale)
							.orient("bottom");
            
            var yAxis = d3.svg.axis()
							.scale(heightScale)
							.orient("left");

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

d3.csv("WaterConsumptionInTheNewYorkCity.csv", function(data) {

data.sort(function(a, b) {
					return d3.descending(a.Year, b.Year);

//If your numeric values aren't sorting properly,
					//try commenting out the line above, and instead using:
					//
					//return d3.descending(+a.lifeSatisfaction, +b.lifeSatisfaction);
					//
					//Data coming in from the CSV is saved as strings (text),
					//so the + signs here force JavaScript to treat those
					//strings instead as numeric values, thereby fixing the
					//sort order (hopefully!).
				});

var rects = svg.selectAll("rect")
								.data(data)
								.enter()
								.append("rect");
                
                    widthScale.domain([ 0, d3.max(data, function(d) {
					return +d.NYCConsumptionMilliongallonsperday;
				}) ]);
                
               heightScale.domain(data.map(function(d) { return d.Year; } ));

rects.attr("x", padding[3])
					.attr("y", function(d, i) {
						return heightScale(d.Year);
					})
					.attr("width", function(d) {
						return widthScale(d.NYCConsumptionMilliongallonsperday);
					})
                    .attr("height", heightScale.rangeBand())
                    .attr("fill", "#3e3b3b")
					.append("title")
					.text(function(d) {
						return d.NYCConsumptionMilliongallonsperday + " Millions of Gallons per Day in " + d.Year;
                    });
            
                svg.append("g")
					.attr("class", "x axis")
					.attr("transform", "translate(" + padding[3] + "," + (h - padding[2]) + ")")
					.call(xAxis);
                
                svg.append("g")
					.attr("class", "y axis")
					.attr("transform", "translate(" + (padding[3] - 2) + ",0)")
					.call(yAxis);

});

</script>

</body>
</html>

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

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