D3 Examples - Taipei Youbike Rental Times since 2012

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<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>Youbike Bar Chart</title>
        <script type="text/javascript" src="https://d3js.org/d3.v3.js"></script>
        <style type="text/css">
            
            body {
                margin: 40px 0px 0px 40px ;
            }
​
            h1 {
                font-size: 24px;
                margin:0;
                font-family: sans-serif;
            }
​
            p {
                font-size: 16px;
                margin: 10px 0 0 0;
                font-family: sans-serif;
            }
​
            svg {
                background-color: white;
            }
​
            .bar {
                cursor: pointer;
            }
​
            .bar text {
                font-family: Helvetica, sans-serif;
                font-size: 11px;
                opacity: 0;
            }
​
            .bar:hover text {
                opacity: 1;
            }
​
            .bar:hover rect {
                fill: orange;
            }
​
            .axis path, 
            .axis line {
                fill: none;
                stroke: black;
                shape-rendering: crispEdges;
            }
​
            .axis text {
                font-family: sans-serif;
                font-size: 11px;
            }
​
            .y.axis path,
            .y.axis line {
                opacity: 0;
            }
​
        </style>
    </head>
    <body>
        <h1>Taipei Youbike Usage</h1>
        <p>Monthly Rental Times Since 2012. Source <a href="https://data.taipei.gov.tw/"> Data Taipei</a>.</p>
​
        <script type="text/javascript">     
​
            var w = 800;
            var h = 600;
            var padding = [20, 30, 50, 90];
​
            var widthscale = d3.scale.linear()
                                .range([0, w - padding[1] - padding[3]]);
​
            var heightscale = d3.scale.ordinal()
                                .rangeRoundBands([ padding[0], h - padding[2]],0.1);
​
            var xAxis = d3.svg.axis()
                            .scale(widthscale)
                            .orient("bottom");
​
            var yAxis = d3.svg.axis()
                            .scale(heightscale)
                            .orient("left");
​
​
​
            var svg = d3.select("body")
                        .append("svg")
                        .attr("width", w)
                        .attr("height", h);
​
            d3.csv("youbike.csv",function(data){
​
                widthscale.domain([0, d3.max(data, function(d){
                    return +d.monthlyTotalRentalTimes;
                }) ]);
​
                heightscale.domain(data.map(function(d){return d.yearMonth;}));
​
                var groups = svg.selectAll("g.bar")
                            .data(data)
                            .enter()
                            .append("g")
                            .attr("class", "bar");
​
                groups.append("rect")
                    .attr("x", padding[3])
                    .attr("y", function(d,i){
                        return heightscale(d.yearMonth);
                    })
                    .attr("width", function (d){
                        return widthscale(d.monthlyTotalRentalTimes);
                    })
                    .attr("height", heightscale.rangeBand())
                    .attr("fill","#5292f9");
​
                groups.append("text")
                    .attr("x", function(d) {
                        return padding[3] + widthscale(d.monthlyTotalRentalTimes);
                    })
                    .attr("y", function(d) {
                        return heightscale(d.yearMonth) + 10;
                    })
                    .text(function(d) {
                        return d.monthlyTotalRentalTimes;
                    });
​
                    
                    // .append("svg:title")
                    // .text(function(d) {
                    //  return d.monthlyTotalRentalTimes;
                    // });
​
​
                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] -5) + ",0)")
                    .call(yAxis);
​
            })
​
        </script>
​
    </body>
</html>
    