Ex. 4 scales and axes, plus small multiples

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<html lang="en">
	<head>
		<meta charset="utf-8">
		<title>Exercise 3- Sorting Education data</title>
		<script type="text/javascript" src="https://d3js.org/d3.v3.min.js"></script>
		<link href='https://fonts.googleapis.com/css?family=Lato' rel='stylesheet' type='text/css'>
		 
		<style type="text/css">
			
			body {background-color: white; font-family: Lato;
			}
			
			.axis path,
			.axis line {
				fill: none;
				stroke: #888888;  
				stroke-opacity: .75;   
				shape-rendering: crispEdges;
			}
			
			.axis text {
				font-family: sans-serif;
				font-size: 11px;
				fill:#888888;
			}

.y.axis path,
			.y.axis line {
				opacity: 0;
			}	
									
			svg, div { background-color: #F9F1DD;
			}
			
			rect {fill:#94B2BD;} 
			
		    h1, p {
		           position: relative;
		           left: 10px;
		           color: #333333;  }
				   
		div {text-align:center; width:315px; font-size:12px; font-weight:bold; padding-top:6px; padding-bottom:6px; }
		#notes {width:700px; text-align:left; background-color:white; font-size:12pt;}

</style>
	</head>
	<body>
		<h1>Algebra Scores for U.S. 8th Grade Students by Race/ethnicity: 2013</h1>
		<script type="text/javascript">		
		
		var city = "San Diego";
		var w = 315;  // svg width 
		var h = 130;   
		var padding = [ 20, 10, 30, 60 ];  //Top, right, bottom, left

// X axis prep
		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");

d3.select("body").append("div").text(city);

heightScale.domain(data.map(function(d) { return d.Race; } ));
			
			
//  NEW  !!!!!!!!!!!!!
					var rects = svg.selectAll("rect")
						.data(data)
						.enter()
						.append("rect");
					
				rects.attr("x", padding[3])
					.attr("y", function(d) {
						return heightScale(d.Race);
					})
					.attr("width", function(d) {
						return widthScale(d.Score);
					})
					.attr("height", heightScale.rangeBand())
				//	.attr("fill", "steelblue")
					.append("title")
					.text(function(d) {
						return "8th grade algebra score for " + d.Race + " is " + d.Score;
					});

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);
									
// Value labels
	var texts = svg.selectAll("text")
					.data(data)
					.enter()
					.append("text");

texts.attr("x", function(d) {
						return (+d.Score/1.2+3);
						})
						.attr("y", function(d, i) {
							return i * 25+15;
						})
						.attr("fill","#777777")
						.style("font-family", "Lato")
                    	.style("font-size", "12px")
						.text(function(d) { return d.Score;});
						
				});  
		</script>

<div id="notes"><h3>Notes</h3>
	<p>U.S. schools are under pressure to close achievement gaps observed across different race/ethnicity groups.  This chart looks at scores for U.S. 8th grade students in algebra for 2013 for San Diego.  I would like to expand the visualization comparing more cities in a small multiples display. So far, I have this <a href="https://bl.ocks.org/devdiva8/raw/397d86b6ca070e8d0580">small multiples prototype</a>.</p>

<p>Source: National Center for Education Statistics, National Assessment of Educational Progress (NAEP) <a href=""https://nces.ed.gov/nationsreportcard/naepdata/>Data Explorer</a>.</p>
	
	<p>Data for Asian/Pacific Islander and American Indian/Alaska Native groups were removed, because in some cells "reporting standards [were] not met." However, data for these groups are included in "All races" scores.</p>
		
		</div>

</body>
</html>

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

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