D3 Examples - D3 Stacked Area Chart Example

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<!DOCTYPE html>
<meta charset="utf-8">
<style>
​
body {
  font: 10px avenir;
}
​
.axis path,
.axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}
​
.browser text {
  text-anchor: end;
}
​
</style>
<body>
<script src="https://d3js.org/d3.v3.js"></script>
<script>
  
function get_colors(n) {
var colors = ["#a6cee3","#1f78b4","#b2df8a","#33a02c",
"#fb9a99","#e31a1c","#fdbf6f","#ff7f00","#cab2d6",
"#6a3d9a"];
​
 return colors[ n % colors.length];}
  
var margin = {top: 61, right: 140, bottom: 101, left: 50},
    width = 960 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;
​
var  times = ["12am","1a", "2a", "3a", "4a", "5a", "6a",
           "7a", "8a", "9a", "10a", "11a", "12pm", "1p",
           "2p", "3p", "4p", "5p", "6p", "7p", "8p",
           "9p", "10p", "11p"];
​
var x = d3.scale.linear()
    .range([0, width]);
​
var y = d3.scale.linear()
    .range([height, 0]);
​
var color = d3.scale.category10();
​
var xAxis = d3.svg.axis()
    .scale(x)
    .orient("bottom")
        .ticks(24, "s");
​
var yAxis = d3.svg.axis()
    .scale(y)
    .orient("left")
    .ticks(5, "s");
​
var area = d3.svg.area()
    .x(function(d) { return x(d.hour); })
    .y0(function(d) { return y(d.y0); })
    .y1(function(d) { return y(d.y0 + d.y); });
  
  
var stack = d3.layout.stack()
    .values(function(d) { return d.values; });
  
var svg = d3.select("body").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
  .append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
  
  svg.append("text")
    .attr("x", 0)
    .attr("y", -40)
    .attr("dy", "0.71em")
    .attr("fill", "#000")
    .text("SFPD Incidents by Hour in Dec 2016")
    .style("font", "23px avenir")
    .style("fill", "#000000");
  
  
     svg.append("text")
    .attr("x", 0)
    .attr("y", 402)
    .attr("dy", "0em")
    .style("font", "12px avenir")
    .style("fill", "#000000")
    .text("This is a plot of the 10 most frequent incidents over a 24-hour period  in San Francisco during December 2016. Interestingly enough, most ");
  
    svg.append("text")
    .attr("x", 0)
    .attr("y", 402)
    .attr("dy", "1em")
    .style("font", "12px avenir")
    .style("fill", "#000000")
    .text("categories follow a similar structure: the occurences dip in the early morning and peak during the lunch and early evening hours.");
  
      svg.append("text")
    .attr("x", 0)
    .attr("y", 402)
    .attr("dy", "3em")
    .style("font", "12px avenir")
    .style("fill", "#000000")
    .text("By Anaelia Ovalle")
    .style("font-weight", "bold");
  
  
  
        d3.csv("data.csv", function(error, data) {
   
     color.domain(d3.keys(data[0]).filter(function(key) {return key !== "hour"; }));
 
     data.forEach(function(d) {  
        d.hour = +d.hour;
      d.burglary = +d.burglary;
      d.assault= +d.assault;
      d.larceny_theft= +d.larceny_theft;
      d.vehicle_related = +d.vehicle_related;
      d.missing_person = +d.missing_person;
      d.non_criminal = +d.non_criminal;
      d.other_offenses = +d.other_offenses;
      d.suspicious_occ = +d.suspicious_occ;
      d.warrants = +d.warrants;
       }); 
       
       
​
  var browsers = stack(color.domain().map(function(name) {
    return {
      name: name,
      values: data.map(function(d) {
        return {hour: d.hour, y: d[name] * 1};
      })
    };
  }));
  
​
//   // Find the value of the hour with highest total value
  var maxHourVal = d3.max(data, function(d){
    var vals = d3.keys(d).map(
      function(key){ 
        return key !== "hour" ? d[key] : 0 });
    return d3.sum(vals);
  });
​
//   // Set domains for axes
  x.domain(d3.extent(data, function(d) { return d.hour; }));
  y.domain([0, 800])
​
  var browser = svg.selectAll(".browser")
      .data(browsers)
        .enter().append("g")
      .attr("class", "browser");
​
  browser.append("path")
      .attr("class", "area")
      .attr("d", function(d) { return area(d.values); })
      .style("fill", function(d,i) { 
            return get_colors(i); });
​
​
      browser.append("text")
      .datum(function(d) { return {name: d.name, value: d.values[d.values.length - 1]}; })
      .attr("transform", function(d) { return "translate(" + x(d.value.hour) + "," + y(d.value.y0 + d.value.y / 2) + ")"; })
      .attr("x", -6)
      .attr("dy", "-0.882em")
      .text(function(d) { 
                if(d.name == "larceny_theft"){
            return "larceny/theft";
          }
                if(d.name == "non_criminal"){
            return "non-criminal";
          }    
            if(d.name == "assault"){
            return d.name;
          }})
      .style("font", "15px avenir")
        .attr("transform", function(d) { return "translate(500," + y(d.value.y0 + d.value.y / 2) + ")"; }) 
​
   svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis).append("text")
        .attr("x", 350)
      .attr("y", 36)
      .attr("fill", "#000")
      .text("Hour of Time")
        .style("font-weight", "bold");
​
  svg.append("g")
      .attr("class", "y axis")
      .call(yAxis)
      .append("text")
      .attr("transform", "rotate(-90)")
        .attr("x", -250)
      .attr("y", -40)
      .attr("dy", "0.3408em")
      .attr("fill", "#000")
      .text("Number of Incidents")
        .style("font-weight", "bold");
      
   var legend = svg.selectAll(".legend")
        .data(color.domain()).enter()
        .append("g")
        .attr("class","legend")
     .attr("transform", "translate(" + (width +20) + "," + 0+ ")");
​
   legend.append("rect")
     .attr("x", 0) 
     .attr("y", function(d, i) { return 20 * i; })
     .attr("width", 10)
     .attr("height", 10)
     .style("fill", function(d, i) {
        return get_colors(i);}); 
   
    legend.append("text")
     .attr("x", 20) 
     .attr("dy", "0.75em")
     .attr("y", function(d, i) { return 20 * i; })
     .text(function(d) {return d});
      
    legend.append("text")
     .attr("x",0) 
//      .attr("dy", "0.75em")
     .attr("y",-10)
     .text("Categories");
​
​
});
​
</script>
​
    