D3 Examples - Sleepless in San Francisco

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<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>George Lee's Sleep Log</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;
            }
        
            h1 {
                font-size: 24px;
                margin:0;
            }
            
            p {
                font-size: : 14px;
                margin: 10px 0 0 0;
            }
            
            svg {
                background-color: white;
            }
            
            g.highlight path {
                stroke: red;
                stroke-width: 2;
            }
            
            .axis path,
            .axis line {
                fill: none;
                stroke: black;
                shape-rendering: crispEdges;
            }
            
            .axis text {
                font-family: sans-serif;
                font-size: 11px;
            }
        </style>
    </head>
​
    <body>
    
        <h1>George's Sleep Log</h1>
        <p> I really need to sleep more ...</p>
        
        <script type="text/javascript">
        
            //Size and Padding
            var w = 1000;
            var h = 600;
            var padding = [50, 50, 50, 50]; 
            
            //Set up date formatting
            var dateFormat = d3.time.format("%Y-%m-%d");
            
            //Set up scales 
            var xScale = d3.time.scale()
                                .range([padding[3],w-padding[1]-padding[3] ]);
            
            var yScale = d3.scale.linear()
                                .range([padding[0],h-padding[2] ]);
            
            
            //Set up axis generators
            var xAxis = d3.svg.axis()
                            .scale(xScale)
                            .orient("bottom")
                            .tickFormat(function(d){
                                return dateFormat(d);
                            });
            
            var yAxis = d3.svg.axis()
                            .scale(yScale)
                            .orient("left");
        
            //Set up line generator
            var line = d3.svg.line()
                .x(function(d) {
                    return  xScale(dateFormat.parse(d.day));
                })
                .y(function(d) {
                    return yScale(+d.minutes);
                });
            
            //Set up SVG
            var svg = d3.select("body")
                        .append("svg")
                        .attr("width",w)
                        .attr("height",h);
            
            
            
            //load data & transform
            d3.csv("SleepLog.csv", function(data) {
                //To test if the data loaded
                //console.log(data);
                //console.log(data.length);
                
                //Those are the two lines we want to show. Making them an array
                var columns = ["Asleep", "Awake"];
                
                //Create an empty array for the newly formatted variable
                var dataset = [];
                
                //Inside the array, we'll load object. Each object is a column
                for (var i = 0; i < columns.length; i++) {
                    dataset[i] = {
                        measures:columns[i],
                        xy: []
                    };
                              
                    for (var j = 0; j < data.length ; j++){
                        //console.log(data[j].Date);
                        //console.log(data[j].Awake);
                        
                        if (i == 0) {
                            dataset[i].xy.push({
                                day: data[j].Date,
                                minutes: data[j].Asleep
                            });
                        } else {
                            dataset[i].xy.push({
                                day: data[j].Date,
                                minutes: data[j].Awake
                            });
                        }
                    }                                
                }
                //Test if the data is reformatted correctly
                console.log(dataset);
                
                //Set scale domains
                xScale.domain([
                    d3.min(dataset, function(d) {
                        return d3.min(d.xy, function(d) {
                            return dateFormat.parse(d.day);
                        });
                    }),
                    d3.max(dataset, function(d) {
                        return d3.max(d.xy, function(d) {
                            return dateFormat.parse(d.day);
                        });
                    })
                ]);
                
                
                yScale.domain([
                    d3.max(dataset, function(d) {
                        return d3.max(d.xy, function(d) {
                            return +d.minutes;
                        });
                    }),
                    0
                ]);
                
                //Make a group for each line
                var groups = svg.selectAll("g")
                    .data(dataset)
                    .enter()
                    .append("g")
                    .classed("highlight", function(d) {
​
                        if (d.measures == "Awake") {
                            return true;
                        } else {
                            return false;
                        }
​
                    });
​
                
                //Append a title for tooltip
                groups.append("title")
                    .text(function(d) {
                        return "On this day" + d.Date + d.measures;
                    });
​
                
                //Within each group, create a new line/path,
                groups.selectAll("path")
                    .data(function(d) {
                        return [ d.xy ];
                    })
                    .enter()
                    .append("path")
                    .attr("class", "line")
                    .attr("d", line)
                    .attr("fill", "none")
                    .attr("stroke", "steelblue")
                    .attr("stroke-width", 2);
                
                
                //Axes
                svg.append("g")
                    .attr("class", "x axis")
                    .attr("transform", "translate(0," + (h - padding[2]) + ")")
                    .call(xAxis);
​
                svg.append("g")
                    .attr("class", "y axis")
                    .attr("transform", "translate(" + (padding[3]) + ",0)")
                    .call(yAxis);
                
            });
                    
        </script>
    
    
    
    
    </body>
​
​
​
​
</html>
    