D3 Examples - SIPRI_Arms_Transfers - Exercise 3

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<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>Setting attributes</title>
        <script type="text/javascript" src="https://d3js.org/d3.v3.js"></script>
        <style type="text/css">
            
            body {
                background-color: white;
                font-family: Helvetica, Arial, sans-serif;
            }
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            p {
                font-size: 10px;
                line-height: 10px;
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            svg {
                background-color: white;
            }
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        </style>
    </head>
    <body>
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        <h2>Top Arms Exporting Countries in 2014</h2>
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        <script type="text/javascript">     
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            var svgWidth = 300;
            var svgHeight = 1000;
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            var svg = d3.select("body")
                        .append("div")
                        .style("height", "400px")
                        .style("width", "300px")
                        .style("overflow", "scroll")
                        .append("svg")
                        .attr("width", svgWidth)
                        .attr("height", svgHeight);
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            // Loads the data from the csv file using method d3.csv.
            // Note that 'data' exists only within the anonymous
            // function. So either it is assigned to a global variable
            // to be used by the visualisation function, 
            // or all the vis part should stay embedded here!
            d3.csv("SIPRI_Arms_Transfers_DB_2014.csv", function(data) {
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                data.sort(function(a, b) {
                    return d3.descending(+a.TIV_VALUE_EXPORT, +b.TIV_VALUE_EXPORT);
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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.lifeSatisfaction, +b.lifeSatisfaction);
                    //
                    //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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                // Rectangles are created in a number specified by 
                // .data(data) and using enter().
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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.TIV_VALUE_EXPORT / 40;
                    })
                    .attr("height", 8)
                    .attr("fill", "black")
                    .append("title")
                    .text(function(d) {
                        return d.COUNTRY + "'s arms export in 2014 was " + d.TIV_VALUE_EXPORT + " TIV";
                    });
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            });
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        </script>
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        <p> Source: SIPRI Arms Transfers Database. </p>
        <p> TIV of arms import/exports. Figures are SIPRI Trend Indicator Values (TIVs) expressed in US$ m. at constant (1990) price. </p>
        <p> See https://www.sipri org/databases/armstransfers/background </p>
        <p> Data download: 17 March 2015</p>
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    </body>
</html>
    