D3 Examples - Exercise 3 for Data Visualization and Infographics with D3

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<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>Loading CSV Data with D3</title>
        <style type="text/css">
            body {
                background-color: whitesmoke;
            }
            svg {
                background-color: mistyrose;
            }
        </style>
        <script type="text/javascript" src="https://d3js.org/d3.v3.js"></script>
    </head>
    <body>
​
        <h1>California Counties Ranked By Diabetes Rate</h1>
        <p>Hover over a bar to see which county it represents!</p>
​
        <svg width="600" height="600">
            <line x1="10" y1="5" x2="10" y2="590" stroke="gray" stroke-width="3" />
        </svg>
​
        <script type="text/javascript">     
​
            //Load in contents of CSV file and create a bar graph
            d3.csv("CA-diabetes-data.csv", function(data) {
​
                var svg1 = d3.select("svg");
​
                // Sort the data in order of ascending Diabetes Value (DV)
                data.sort(function(a, b) {
                    return d3.ascending(a["Diabetes Value"], b["Diabetes Value"]);
                });
​
                // Bind data to rectangles in the SVG element
                svg1.selectAll("rect")
                    .data(data)
                    .enter()
                    .append("rect");
​
                // Give rectangles width proportional to DV
                // and position along y axis determined by index
                svg1.selectAll("rect")
                    .attr("x", 15)
                    .attr("y", function(d, i) {
                        return (i * 10) + 5;
                    })
                    .attr("width", function(d) {
                        return parseInt(d["Diabetes Value"] * 4000);
                    })
                    .attr("height", 8)
                    .attr("fill", "gray")
                    .append("title")
                    .text(function(d) {return d["County"];});
​
            });
​
​
        </script>
​
    </body>
</html>
    