D3 Examples - House scatterplot

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<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>The People's House</title>
        <script type="text/javascript" src="https://d3js.org/d3.v3.js"></script>
        <style type="text/css">
            
            body {
                background-color: #ffffff;
                font-family: Arial, Helvetica, sans-serif;
            }
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            h1 {
                font-size: 24px;
                margin: 0;
            }
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            p {
                font-size: 12px;
                margin: 5px 0 20 0;
            }
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            svg {
                background-color: #ffffff;
            }
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            circle:hover {
                fill: slateblue;
            }
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            .axis path,
            .axis line {
                fill: none;
                stroke: black;
                shape-rendering: crispEdges;
            }
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            .axis text {
                font-family: Arial, Helvetica, sans-serif;
                font-size: 9px;
            }
​
            
        </style>
    </head>
    <body>
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        <h1>Education Level and Race by Congressional District</h1>
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        <p>Percentage of adults age 25 and older with a bachelor&rsquo;s degree or higher (horizontal) vs. percentage of population that is nonwhite (vertical)</p>
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        <script type="text/javascript">     
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​
            var w = 800;
            var h = 500;
            var padding = [ 20, 10, 30, 50 ];  //Top, right, bottom, left
​
​
​
            var xScale = d3.scale.linear()
                                .range([ padding[3], w - padding[1] ]);
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            var yScale = d3.scale.linear()
                                .range([ padding[0], h - padding[2] ]);
​
​
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            var xAxistop = d3.svg.axis()
                            .scale(xScale)
                            .orient("top")
                            .ticks(8)
                            .tickFormat(function(d) {
                                return d + "%";
                            });
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            var xAxisbot = d3.svg.axis()
                            .scale(xScale)
                            .orient("bottom")
                            .ticks(8)
                            .tickFormat(function(d) {
                                return d + "%";
                            });
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            var yAxis = d3.svg.axis()
                            .scale(yScale)
                            .orient("left")
                            .ticks(10)
                            .tickFormat(function(d) {
                                return d + "%";
                            });
​
​
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            var svg = d3.select("body")
                        .append("svg")
                        .attr("width", w)
                        .attr("height", h);
​
​
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            d3.csv("CDdemographics.csv", function(data) {
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                data.sort(function(a, b) {
                    return d3.descending(+a.PCT_COLL, +b.PCT_COLL);
                });
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                xScale.domain([ 
                    0, d3.max(data, function(d) {
                    return +d.PCT_COLL;
                }) ]);
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                yScale.domain([ 
                    d3.max(data, function(d) {
                        return +d.PCT_NW;
                    }), 0]);
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                var circles = svg.selectAll("circle")
                                .data(data)
                                .enter()
                                .append("circle");
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                circles.attr("cx", function(d) {
                    return xScale(d.PCT_COLL);
                })
                    .attr("cy", function(d) {
                        return yScale(d.PCT_NW);
                    })
                    .attr("r", 4)
                    .attr("fill", "turquoise")
                    .attr("stroke", "darkcyan")
                    .attr("opacity", .5)
                    .append("title")
                    .text(function(d) {
                        return d.STCD + ": " + d.PCT_COLL + "% are college graduates and " + d.PCT_NW + "% are nonwhite";
                    });
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                svg.append("g")
                    .attr("class", "x axis")
                    .attr("transform", "translate(0," + ( + padding[0]) + ")")
                    .call(xAxistop);
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                svg.append("g")
                    .attr("class", "x axis")
                    .attr("transform", "translate(0," + (h - padding[2]) + ")")
                    .call(xAxisbot);
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                svg.append("g")
                    .attr("class", "y axis")
                    .attr("transform", "translate(" + padding[3] + ",0)")
                    .call(yAxis);
​
            });
​
​
        </script>
        <p>Source: U.S. Census Bureau, <a href="https://factfinder.census.gov/bkmk/table/1.0/en/ACS/13_5YR/S1501/0100000US.50000.113" target="blank">American Community Survey 2009-13</a>
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    </body>
</html>
    