D3 Examples - Women seats in parliament in 2014

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<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>Women in Parliament</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;
                color:black;
            }
            
            h1 {
                font-size: 28px;
                font-family: georgia, serif;
                margin: 10px 0 30px; 0;
            }
            
            p {                
                font-size: 1em;
                margin: 10px 0 0 0;
            }
            
            svg {
                background-color: white;
                padding-top: 5px;
                padding-left: 5px;
            }
​
            rect:hover {
                fill: #F2BF30;
            }
            
            .axis path,
            .axis line {
                fill: none;
                stroke: black;
                shape-rendering: crispEdges;
            }
            
            .axis text {
                font-family: sans-serif;
                font-size: 0.8em;
            }
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            .y.axis path,
            .y.axis line {
                opacity: 0;
            }
            
        </style>
    </head>
    <body>
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        <h1>Women's representation in national parliaments</h1>
        
        <p>Proportion of seats held by women in national parliaments - source: <a href="https://mdgs.un.org/unsd/mdg/Data.aspx">United Nations</a></p>
        
        <script type="text/javascript"> 
            
            // 1. setting the size of the svg
            var w = 900;
            var h = 3150;
            var padding = [10, 10, 30, 150]; // 0 top, 1 right, 2 bottom, 3 left
            
            // 2. setting scales
            
            // 2.1. width
            var widthScale = d3.scale.linear()
                                        .range([0, w - padding[1] - padding[3] ]);
            
            //2.2 height
            var heightScale = d3.scale.ordinal()
                                        .rangeRoundBands([padding[0], h - padding[2]], 0.1);
            
            // 3. setting the axis
            
            var xAxis = d3.svg.axis()
                                .scale(widthScale)
                                .orient("bottom");
            
            var yAxis = d3.svg.axis()
                                .scale(heightScale)
                                .orient("left");
​
            // 4. appending the svg to the page
            var svg = d3.select("body")
                        .append("svg")
                        .attr("width", w)
                        .attr("height", h);
            
          //5. fecthing the data    
           d3.csv("womeninparliament2014.csv", function(data) {
          
            // 6. sorting the data   
            data.sort(function(a, b) {
                    return d3.descending(+a["2014"], +b["2014"]);
​
                    //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!).
                });
            
            //  7. setting the width scale to the data
               widthScale.domain([0, d3.max(data, function(d) {
                   return +d["2014"];
               }) ]);
               
            // 8. setting the height scale to the data
               heightScale.domain(data.map(function(d) {
                                           return d.Country 
               }));
​
            // 9. drawing the rectangles with the data   
            var rects = svg.selectAll("rect")
                            .data(data)
                            .enter()
                            .append("rect");
            
                rects.attr("x", padding[3])
                    .attr("y", function(d) {
                        return heightScale(d.Country);
                })
                    .attr("width", function(d) {
                        return widthScale (d["2014"]);
                })
                    .attr("height", heightScale.rangeBand())
                    .attr("fill", "#852800")
                    .append("title")
                    .text(function(d) {
                        return d.Country + " has " + d["2014"] + " women in parliament";
                });
               
           
            // 10. drawing the axis
               svg.append("g")
                    .attr("class", "x axis")
                    .attr("transform", "translate(" + padding[3] + "," + (h - padding[2]) + ")")
                    .call(xAxis);
               
               svg.append("g")
                    .attr("class", "y axis")
                    .attr("transform", "translate(" + padding[3] + ",0)")
                    .call(yAxis);
               
              
           
               
           });
            
​
​
        </script>
​
    </body>
</html>
    