D3 Examples - Horizontal bar chart with axis

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<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>Assignment 4</title>
        <script type="text/javascript" src="https://d3js.org/d3.v3.min.js"></script>
        <style type="text/css">
            
            body {
                background-color: #E0E4CC;
                font-family: 'Franklin Gothic Medium', 'Franklin Gothic', 'ITC Franklin Gothic', Arial, sans-serif;
            }
​
            h1 {
                font-size: 24px;
                margin: 0;
                color: gray;
            }
​
            p {
                font-size: 13px;
                margin: 10px 0 0 0;
                color: gray;
            }
            a {
                font-size: 13px;
                margin: 10px 0 0 0;
                color: #F38630;
            }
​
            svg {
                background-color: #E0E4CC;
            }
​
            rect:hover {
                fill: #F38630;
            }
            
            .axis path,
            .axis line {
                fill: none;
                stroke: gray;
                shape-rendering: crispEdges;
            }
            
            .axis text {
                font-family: sans-serif;
                font-size: 9px;
            }
​
            .y.axis path,
            .y.axis line {
                opacity: 0;
            }
​
        </style>
    </head>
    <body>
​
        <h1>US College Completion</h1>
​
        <p>Share of students at 4-year, public university who graduated within 6 years, by state (Fall 2008 Cohort). Source: <a href="https://nscresearchcenter.org/">National Student Clearinghouse</a></p>
​
        <script type="text/javascript"> 
​
​
            var w = 500;
            var h = 500;
            var padding = [ 5, 10, 20, 120 ];   
​
​
            var widthScale = d3.scale.linear()
                                .range([ 0, w - padding[1] - padding[3] ]);
            
            var heightScale = d3.scale.ordinal()
                                .rangeRoundBands([ padding[0], h - padding[2] ], 0.15);
​
            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("fourYrPubPSECompRate_in6years.csv", function(data) {
​
                data.sort(function(a, b) {
                    return d3.descending(a.completionRate, b.completionRate);
                });
​
                widthScale.domain([ 0, d3.max(data, function(d) {
                    return +d.completionRate;
                }) ]);
​
                heightScale.domain(data.map(function(d) { return d.State; } ));
            
​
                var rects = svg.selectAll("rect")
                                .data(data)
                                .enter()
                                .append("rect");
​
                rects.attr("x", padding[3])
                    .attr("y", function(d) {
                        return heightScale(d.State);
                    })
                    .attr("width", function(d) {
                        return widthScale(d.completionRate);
                    })
                    .attr("height", heightScale.rangeBand())
                    .attr("fill", "#69D2E7")
                    .append("title")
                    .text(function(d) {
                        return "The public postsecondary 4-year program completion rate for " + d.State + " is " + d.completionRate + "%";
                    });
​
                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);
​
            });
​
        </script>
​
    </body>
</html>
    