D3 Examples - Mean Average Regional UK House Prices 2014

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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.min.js"></script>
        <style type="text/css">
            
            body {
                background-color: white;
                font-family: Helvetica, Arial, sans-serif;
            }
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            svg {
                background-color: white;
            }
            h1 {
                font-size: 24px;
                margin: 0;
            }
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            p {
                font-size: 14px;
                margin: 10px 0 0 0;
            }
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            svg {
                background-color: white;
            }
​
            rect:hover {
                fill:  lime;
            }
​
        </style>
    </head>
    <body>
        <h1>Mean Average House Prices Across UK Regions in 2014</h1>
        <p> </p>
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        <script type="text/javascript">     
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            var svg = d3.select("body")
                        .append("svg")
                        .attr("width", 400)
                        .attr("height", 600);
​
​
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            d3.csv("MeanAnnualHousePricesUK.csv", function(data) {
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                data.sort(function(a, b) {
                    //return d3.descending(a.lifeSatisfaction, b.lifeSatisfaction);
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                    //If your numeric values aren't sorting properly,
                    //try commenting out the line above, and instead using:
                    //
                    return d3.descending(+a.Year2014, +b.Year2014);
                    //
                    //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!).
                });
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                var rects = svg.selectAll("rect")
                                .data(data)
                                .enter()
                                .append("rect");
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                rects.attr("x", 0)
                    .attr("y", function(d, i) {
                        return i * 10;
                    })
                    .attr("width", function(d) {
                        return d.Year2014 / 5000;
                    })
                    .attr("height", 8)
                    .append("title")
                    .text(function(d) {
                        return d.Region +" 's average house price in 2014 is " +d.Year2014;
                    });
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            });
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        </script>
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    </body>
</html>
    