Supermarket Electricity Data

<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8">
		<title>Bar Chart, Framed</title>
		<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js"></script>
		<style type="text/css">
			
			body {
				margin: 0;
				background-color: lightGray;
				font-family: Helvetica, Arial, sans-serif;
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#container {
				width: 700px;
				margin-left: auto;
				margin-right: auto;
				margin-top: 50px;
				padding: 50px;
				background-color: white;
				box-shadow: 4px 4px 13px 6px #aaa;
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h1 {
				font-size: 24px;
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a:hover {
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a:visited {
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a:active {
				color: steelBlue;
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svg {
				background-color: white;
			}

g.bar {
                stroke: black;
                stroke-width: 0.5px;
            }
            
			g.bar text {
                font-family: Consolas,sans-serif;
				font-size: 13px;
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			.axis text {
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				font-size: 9px;
			}
            .y.axis text {
                font-size: 8px;
            }

.y.axis path,
			.y.axis line {
				opacity: 0;
			}

</style>
	</head>
	<body>

<div id="container">
			<h1>WF Electricity</h1>
			<p>Some supermarket electricity consumption data. V2.3</p>
            <button onclick="javascript:sort2(); void(0);">Sort Alpha</button> | <button onclick="javascript:sort3(); void(0);">Sort kWh/SF</button> 
		</div>

var w = 700;
			var h = 800;
			var padding = [ 20, 10, 30, 120 ];  //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 heightScale = d3.scale.linear()
//								.range([0,100]);

var xAxis = d3.svg.axis()
							.scale(widthScale)
							.orient("bottom");

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

//Now SVG goes into #container instead of body
			var svg = d3.select("#container")
						.append("svg")
						.attr("width", w)
						.attr("height", h);

d3.csv("wf-01-electricity.csv", function(data) {
			 
                var data2 = data;

data.sort(function(a, b) {
					return d3.descending(+a.EL201502, +b.EL201502);
				    //return d3.ascending(+a.Location, +b.Location);
				});
                                 
				widthScale.domain([ 0, d3.max(data, function(d) {
					return +d.EL201502;
				}) ]);

heightScale.domain(data.map( function(d,i) { return d.Location; } ));

//Bind data to groups (not bars directly)
				var groups = svg.selectAll("g")
								.data(data)
								.enter()
								.append("g")
								.attr("class", "bar")
                                .attr("mylocation",function(d,i) {
                                    return d.Location;
                                });

//Add a rect to each group
				var rects = groups.append("rect")
					.attr("x", padding[3])
					.attr("y", function(d,i) {
                        console.log("a",i, heightScale(d.Location));
						return heightScale(d.Location);
					})
					.attr("mylocation", function(d,i) {
						return d.Location;
					})
					.attr("width", 0)
					.attr("height", heightScale.rangeBand())
					.attr("fill", "steelblue");

//Add a text element to each group
				groups.append("text")
					.attr("x", function(d) {
						//return padding[3] + widthScale(d.EL201502) + 3;
                        return padding[3];
					})
					.attr("y", function(d,i) {
						return heightScale(d.Location) + 6;
					})
					.text(function(d,i) {
						return i + ' ' + d.EL201502 + ' (' + d.Location + ')';
					});

rects.transition()
					.delay(function(d, i) {
						return i;
					})
					.duration(100)
					.attr("width", function(d) {
						return widthScale(d.EL201502);
					});

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] + ",0)")
					.call(yAxis);
                    
			});
            
            function sort2() {

d3.selectAll('g.bar')
                    .sort(function(a, b) {
                        return d3.ascending(a.mylocation, b.mylocation);
                    });
                
                d3.selectAll('g.bar rect')
                    .transition()
                    .duration(1000)
                    .attr("y", function(d,i) {
                        console.log("b", i, heightScale(d.mylocation));
                        return heightScale(d.mylocation);
                    });
                    
                d3.selectAll('g.bar text')
                    .transition()
                    .duration(1000)
                    .attr("y", function(d,i) {
                        return heightScale(d.mylocation);
                    });

}

function sort3() {

// This works but isn't useful.
                widthScale.domain([ 0, 10 ]);
                
                // This is killing me.  How do I access the 'data' from here inside a function, knowing that data was created with a different scope? 
                widthScale.domain([ 0, d3.max(d3.selectAll(data), function(d) {
				   return +d.EL201502/d.SqFt;
			    }) ]);
                
                
                d3.selectAll('rect')
                    .transition()
                    .duration(1000)
					.attr("y", function(d) {
						return heightScale(d.Location);
					})
					.attr("width", function(d) {
                        console.log(d.Location + ' ' + d.EL201501 + ' ' + d.EL201501/d.SqFt);
						return widthScale(+d.EL201501/d.SqFt);
					});

svg.selectAll("g.y.axis")
                        .call(yAxis);
                    
                    svg.selectAll("g.x.axis")
                        .call(xAxis);                    
                    
            }

</script>

</body>
</html>

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