D3 Examples - How many 26year olds did/do/will live in Inner London

xxxxxxxxxx
 
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>Dot Plot with Date Scale and Axis</title>
        <script type="text/javascript" src="https://d3js.org/d3.v3.min.js"></script>
        <style type="text/css">
            
            body {
                background-color: #fbf3e3;
                font-family: Helvetica, Arial, sans-serif;
            }
​
            h1 {
                font: bold 37px "Century Schoolbook", Georgia, Times, serif;
    color: #be1258;
    line-height: 90%;
    margin: .2em 0 .4em 0;
    letter-spacing: -2px;
            }
​
            p {
                color: #39677f;
        font-size: 10px;
        margin: 5px;
        font-family: "Lucida Grande", Verdana, Helvetica, Arial, sans-serif;
        font-size: 11px;
​
            }
​
            svg {
                background-color: #fbf3e3;
            }
​
            circle:hover {
                fill: #39677f;
                stroke: #6cacc4;
​
            }
            
            .axis path,
            .axis line {
                fill: none;
                stroke: black;
                shape-rendering: crispEdges;
            }
            
            .axis text {
                font-family: sans-serif;
                font-size: 9px;
            }
​
        </style>
    </head>
    <body>
​
        <h1>The long-term projection for male 26 year olds for Inner London</h1>
​
        <p>This is GLA's 2014 round of projection for inner London's male 26 year olds. I picked it as i was interested in how my current age group was and will be present in the years to come
​
        2014 round population projections. Source: <a href="https://data.london.gov.uk/dataset/2014-round-population-projections">data.london.gov.uk</a>, 2014</p>
​
​
        <script type="text/javascript">     
​
​
            var w = 900;
            var h = 600;
            var padding = [ 20, 10, 50, 100 ];  //Top, right, bottom, left
​
​
​
            //Set up date formatting and years
            var dateFormat = d3.time.format("%Y");
​
​
​
            var xScale = d3.time.scale()
                                .range([ padding[3], w - padding[1] - padding[3] ]);
            
            var yScale = d3.scale.linear()
                                .range([ padding[0], h - padding[2] ]);
​
​
​
            var xAxis = d3.svg.axis()
                            .scale(xScale)
                            .orient("bottom")
                            .ticks(15)
                            .tickFormat(function(d) {
                                return dateFormat(d);
                            });
​
            var yAxis = d3.svg.axis()
                            .scale(yScale)
                            .orient("left");
​
​
​
            var svg = d3.select("body")
                        .append("svg")
                        .attr("width", w)
                        .attr("height", h);
​
​
​
            d3.csv("data.csv", function(data) {
​
                xScale.domain([ 
                    d3.min(data, function(d) {
                        return dateFormat.parse(d.year);
                    }),
                    d3.max(data, function(d) {
                        return dateFormat.parse(d.year);
                    })
                ]);
​
                yScale.domain([ 
                    d3.max(data, function(d) {
                        return +d.percentage;
                    }),
                    2
                ]);
​
                var circles = svg.selectAll("circle")
                                .data(data)
                                .enter()
                                .append("circle");
​
                circles.attr("cx", function(d) {
                        return xScale(dateFormat.parse(d.year));
                    })
                    .attr("cy", function(d) {
                        return yScale(d.percentage);
                    })
                    .attr("r", 0)
                    .attr("fill", "#be1258")
                    .attr("stroke", "#e8a3ba")
                    .append("title")
                    .text(function(d) {
                        return "For " + d.year + "'s 26 year old males: There were " + d.males_with_age_of_26 + " for a total inner london population of" + d.total_inner_london + ". This makes " + d.percentage + " % of people for inner London.";
                    });
​
                    circles.sort(function(a, b) {
                        return d3.ascending(+a.year, +b.year);
                    })
                    .transition()
                    .delay(function(d, i) {
                        return i * 200;
                    })
                    .duration(7000)
                    .attr("r", 18);
​
                svg.append("g")
                    .attr("class", "x axis")
                    .attr("transform", "translate(0," + (h - padding[2] + 10) + ")")
                    .call(xAxis);
​
                svg.append("g")
                    .attr("class", "y axis")
                    .attr("transform", "translate(" + (padding[3] - 10) + ",0)")
                    .call(yAxis);
​
            });
​
​
        </script>
        <p>Hover over the circles and see the details for each year recorded/projected!</p>
​
    </body>
</html>
    