D3 Examples - AnAge scatterplot

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<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>Binding Data</title>
        <script type="text/javascript" src="https://d3js.org/d3.v3.js"></script>
        <style type="text/css">
            
            body {
                background-color: white;
            }
            
            h1 {
                font-size: 24px;
                margin: 0;
                font-family: sans-serif;
                fill:grey;
            }
            
            p {
                font-size:14px;
                margin: 10px 0 0 0;
                fill:grey;
            }
​
            svg {
                background-color: white;
            }
            
            circle:hover {
                fill:mediumpurple;
            }
​
            .axis path,
            .axis line {
                fill: none;
                stroke: grey;
                shape-rendering: crispEdges;
            }
            
            .axis text{
                font-family: sans-serif;
                font-size:7;
                fill:grey;
            }
                
            
            
        </style>
    </head>
    <body>
​
        <h1>Maximum Species Longevity (Years) vs Gestation (days) </p>
        
        <p>Source: AnAge</p>
​
        <script type="text/javascript">
            
            var w = 1200;
            var h = 820;
            var padding = [ 40, 10, 40, 100]; // Top, right, bottomw, left
            
            
            var xScale = d3.scale.linear()
                                .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");
             
            
            var yAxis = d3.svg.axis()
                .scale(yScale)
                .orient("left");
            
            var svg = d3.select("body")
                        .append("svg")
                        .attr("width", w)
                        .attr("height", h);
      
​
            d3.csv("anage-data-txt-clean.csv", function(data) {
​
                data.sort(function(a, b) {
                    return d3.descending(+a.MaximumLongevity, +b.MaximumLongevity);
                });
                
                xScale.domain([ 0, d3.max(data, function(d) {
                    return +d.MaximumLongevity;
                }) ]);
                
                
                yScale.domain([ d3.max(data, function(d) {
                    return +d["Gestation/Incubation (days)"];
                }), 0 
                              ]);
                
                var circles = svg.selectAll("circle")
                    .data(data)
                    .enter()
                    .append("circle");
                
                
                circles.attr("cx", -100)
                    .attr("cy", function(d) {
                        return yScale( d["Gestation/Incubation (days)"]);
                    })
                    .attr("r", 0.1)
                    .attr("fill", "darkturquoise")
                    .append("title")
                    .text(function(d) {
                        return d.CommonName + "'s maximum longevity is " + d.MaximumLongevity + ", and " + d["Gestation/Incubation (days)"];
                    });
                
                circles.transition()
                .duration(2000)
                .attr("cx", function(d){
                    return xScale(d.MaximumLongevity);
                    })
                    .attr("cy", function(d) {
                        return yScale( d["Gestation/Incubation (days)"]);
                    })
                .attr("r", 4);
                
                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>
​
    </body>
</html>
    