D3 Examples - Excercise 5: Cash for Care Scatterplot

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<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>Excercise module 4</title>
        <script type="text/javascript" src="https://d3js.org/d3.v3.js"></script>
        <style type="text/css">
            body{
                margin-left : 4em;
                margin-right : 4em;
            }
            svg {
                background-color: white;
            }
            
            .axis path,
            .axis line {
                fill: none;
                stroke: black;
                shape-rendering: crispEdges;
            }
            
            .axis text {
                font-family: Arial, sans-serif;
                font-size: 12px;
            }
​
​
​
​
        </style>
    </head>
    <body>
        <h2>Cash for Care recipients</h2>
        <p>
            Number of cash for care reciptients in 2009 and 2014. 
            Male age groups shown in blue and women  in red.
            
            This is not a good encoding as is for this type of information.
        </p>
​
        <script type="text/javascript">     
​
            function drawYear(data,year1,year2){
​
                var width = 500;
                var height = 350;
​
​
                var svg = d3.select("body").append("svg");
                svg.attr("width",width).attr("height",height)
​
                var padding = {
                  top: 50,
                  right: 20,
                  bottom: 20,
                  left: 50
                };
​
                // Sort the data
                //data.sort(function(a, b) {
                //  return d3.ascending(parseInt(a["2005"]),parseInt(b["2005"]));
                //});
​
​
                var xScale = d3.scale.linear()
                                .range([ padding.left, width  - padding.right - padding.left ])
                                .domain([0, d3.max(data, function(d) {
                                    return +d[year1];   
                                })]);
​
                var yScale = d3.scale.linear()
                                    .range([ padding.top, height - padding.bottom])
                                    .domain([ d3.max(data, function(d) {
                                        return +d[year2];   
                                    }),0]);
​
​
​
                var xAxis = d3.svg.axis()
                                .scale(xScale)
                                .orient("bottom");
​
                var yAxis = d3.svg.axis()
                                .scale(yScale)
                                .orient("left");
​
​
​
                var circles = svg.selectAll("circle")
                    .data(data)
                    .enter()
                    .append("circle");
​
​
                circles.attr("cx", function (d) {
                        return xScale(+d[year1]);
                    } )
                    .attr("cy", function(d,i){
                        return yScale(+d[year2]);
                        
                    })
                    .attr("r",0.1)
                    .attr("fill", function(d){
                        // Different colors for each age group
                        if(d["Category"].indexOf("Men") > -1) return "#3182bd";
                        else return "#de2d26";
                        })
                    .append("title")
                    .text(function(d){
                        return d["Category"]+"  "+year1+": "+d[year1] + ", "+year2+": "+d[year2];
                    });
                    
                svg.append("g")
                    .attr("class", "x axis")
                    .attr("transform", "translate(" + 0 + "," + (height - padding.bottom + ")"))
                    .call(xAxis);
                
                svg.append("g")
                    .attr("class", "y axis")
                    .attr("transform", "translate(" + (padding.left) + ",0)")
                    .call(yAxis);
​
                svg.append("text")
                    .attr("class", "x label")
                    .attr("text-anchor", "end")
                    .attr("x", width)
                    .attr("y", height - 6)
                    .text(year1);
​
                svg.append("text")
                    .attr("class", "y label")
                    .attr("text-anchor", "end")
                    .attr("y", 6)
                    .attr("dy", ".75em")
                    .attr("transform", "rotate(-90)")
                    .text(year2);
    
    
                circles.transition()
                    .delay(function(d, i) {
                        return i*1000
                        })
                    .duration(1000)
                    .attr("r",10);
                
            }
    
            //Load in contents of CSV file
            d3.csv("Number of Cash for Care recipients by year and sex2.csv", function(data) {
                drawYear(data,"2009","2014");
            })
​
    </script>
​
    </body>
</html>
    