D3 Examples - State Health Ratio Bar Chart

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<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>Adding Tooltips</title>
        <script type="text/javascript" src="https://d3js.org/d3.v3.js"></script>
        <style type="text/css">
            
            body {
                background-color: white;
            }
​
            svg {
                background-color: white;
            }
​
        </style>
    </head>
    <body>
​
        <script type="text/javascript">     
            var w = 600;
            var h = 800;
​
            var svg = d3.select("body")
                        .append("svg")
                        .attr("width", w)
                        .attr("height", h);
​
​
​
            d3.csv("statehealth.csv", function(data) {
​
                data.sort(function(a, b) {
                    // return d3.descending(a.ChildAdultCare2012, b.ChildAdultCare2012);
​
                    //If your numeric values aren't sorting properly,
                    //try commenting out the line above, and instead using:
                    //
                    return d3.descending(+a.ChildAdultCare2012/+a.Population2012, +b.ChildAdultCare2012/+b.Population2012);
                    //
                    //Data coming in from the CSV is saved as strings (text),
                    //so the + signs here force JavaScript to treat those
                    //strings instead as numeric values, thereby fixing the
                    //sort order (hopefully!).
                });
​
                var rects = svg.selectAll("rect")
                                .data(data)
                                .enter()
                                .append("rect");
​
                rects.attr("x", 100)
                    .attr("y", function(d, i) {
                        return i * 13 + 5;
                    })
                    .attr("width", function(d) {
                        return d.ChildAdultCare2012 * 10000 / d.Population2012;
                    })
                    .attr("height", 10)
                    .append("title")
                    .text(function(d) {
                        var x = d.ChildAdultCare2012/d.Population2012;
                        // console.log(x);
                        return d.State + "'s child and adult care participants ratio (over state population) " + d3.format(".3p")(x);
                    });
​
                svg.selectAll("text")
                    .data(data)
                    .enter()
                    .append("text")
                    .text(function(d){
                        return d.State;
                    })
                    .attr("x", 95)
                    .attr("y", function(d, i){
                        return i * 13 + 13;
                    })
                    .attr({
                        "fill": "black",
                        "font-family": "sans-serif",
                        "font-size": "8px",
                        "text-anchor": "end"
                    })
            });
​
​
        </script>
​
    </body>
</html>
    