D3 Examples - San Francisco Business and Industry Week 4

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<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>Number of San Francisco Businesses per Industry</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;
            }
​
            rect:hover {
                fill: silver;
            }
        
            .axis path,
            .axis line {
                fill: none;
                stroke: silver;
                shape-rendering: crispEdges;
            }
            
            .axis text {
                font-family: sans-serif;
                font-size: 7px;
                fill: silver;
            }   
                
        </style>
    </head>
    <body>
        
        <h1>San Francisco Businesses per Industry</h1>
​
        <p>Number of business per industry. Source: <a href="https://quickfacts.census.gov/qfd/states/06/06075.html">US Census</a>, 2014</p>
        
        <script type="text/javascript">
​
            //Width and height
            var w = 1200;
            var h = 400;
            var barPadding = 7;
            var padding = [ 20, 10, 20, 20 ];  //Top, right, bottom, left
            
            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);
            
            //Create SVG element
            var svg = d3.select("body")
                        .append("svg")
                        .attr("width", w)
                        .attr("height", h);
                        
            
            d3.csv("SF_Business&IndustryWK4.csv",function(data) { 
            
            //Create scale functions
            var xScale = d3.scale.linear()
                                 .domain([0, d3.max(data, function(d) { return d.Number/6; })])
                                 .range([0, w]);
                                  
//          var yScale = d3.scale.linear()
//                               .domain([0, h])
//                               .range([h - barPadding, barPadding]);
​
            //Create Axis
            var xAxis = d3.svg.axis()
                          .scale(xScale)
                          .orient("bottom")
                          .ticks(8);      
​
            widthScale.domain([ 0, d3.max(data, function(d) {
                return +d.Number/6;
            }) ]);
​
            heightScale.domain(d3.range(data.length));
​
​
            var rects = svg.selectAll("rect")
                           .data(data)
                           .enter()
                           .append("rect");
                           
            rects.attr("x", padding[3])
               .attr("y", function(d, i) { 
                    return heightScale(i);
                })
               .attr("width", function(d) {
                    return widthScale(d.Number/6);
                })
               .attr("height", heightScale.rangeBand())
               .attr("fill", "orange");
            
            svg.selectAll("text")
               .data(data)
               .enter()
               .append("text")
               .text(function(d) {
                    return d.Industry;
               })
               .attr("x", padding[3])
               .attr("y", function(d, i) {
                    return heightScale(i) + (barPadding * 1.6);
               })
               .attr("font-family", "sans-serif")
               .attr("font-size", "10px")
               .attr("fill", "black");
​
            svg.append("g")
               .attr("class", "x axis")
               .attr("transform", "translate(" + padding[3] + "," + (h - padding[2]) + ")")
               .call(xAxis);
​
            });
            
        </script>
    </body>
</html>
    