Polar Area Chart (Game of Thrones)

Polar Area Chart (Game of Thrones).markdown

Polar Area Chart (Game of Thrones)

A polar area chart showing prominent Game of Thrones characters' on-screen time and number of episodes. Built using D3 with data from user "Sellsword" on the Game of Thrones forums.

Forked from Desmond Weindorf's Pen Polar Area Chart (Game of Thrones).

Forked from Desmond Weindorf's Pen Polar Area Chart (Game of Thrones).

A Pen by Rahul Agarwal on CodePen.

License.

script.js

// data is for seasons 1-3 sourced from http://asoiaf.westeros.org/index.php/topic/94295-a-game-of-screentime/
// colors are assorted by most recent allegiances in season 5

var data_url = "https://s3-us-west-2.amazonaws.com/s.cdpn.io/29725/got.json";
var colors_url = "https://s3-us-west-2.amazonaws.com/s.cdpn.io/29725/house_colors.json";
var data, house_colors;
d3.json(data_url, loadData);

function loadData(json){
  //data
  data = sortData(json);
  
  d3.json(colors_url, function(colors){
    house_colors = colors;
    visualize();

    window.onresize = function(){
      d3.select("svg").remove();
      visualize();
    };
  });
}

function visualize(){
  //style
  var pad = 10;
  var h = window.innerHeight-pad;
  var w = window.innerWidth-pad;
  var size = 680;
  var r = size/8;
  var barWidth = w/data.length;
  var animTime = 1500;

  var radiusScale = d3.scale.sqrt()
    .domain([0, d3.max(data, function(d){ return d.episodes })])
    .range([0, r*3]);
  
  var colorScale = d3.scale.ordinal()
    .domain(arrayFromProperty(house_colors,"family"))
    .range(arrayFromProperty(house_colors,"color"));
  
  //bars
  var svg = d3.select("body")
    .append("svg")
      .attr("height", h)
      .attr("width", w)
      .style("margin", pad/2+"px 0 0 "+pad/2+"px");
  
  var pie = d3.layout.pie()
    .value(function(d){ return d.minutes + d.seconds/60; })
    .sort(null);
  
  var arc_zero = d3.svg.arc()
    .outerRadius(r)
    .innerRadius(r);
  
  var arc = d3.svg.arc()
    .outerRadius(function(d){ return r + radiusScale(d.data.episodes) })
    .innerRadius(r);

  var g = svg.append("g")
    .attr("transform", "translate("+w/2+","+h/2+") rotate(-180)");
  g.transition().duration(animTime)
    .attr("transform", "translate("+w/2+","+h/2+")");


  var bars = g.selectAll("g")
    .data(pie(data)).enter()
    .append("g")
    .attr("class", "bar")
    .attr("id", function(d,i){ return i });
  
  bars.append("path")
    .attr("d", arc_zero)
    .attr("stroke", "#FFF")
    .attr("fill", function(d){ return colorScale(d.data.family) })
    .transition().duration(animTime)
    .attr("d", arc);
  
  //text info
  var circle = g.append("circle")
    .attr("fill", "#333")
    .attr("r", 1)
    .transition().duration(animTime)
    .attr("r", r-5);
  
  var title_default = "Game   of  Thrones";
  var title = g.append("text")
      .text(title_default)
      .attr("xml:space", "preserve")
      .attr("text-anchor", "middle")
      .attr("font-family", "GameOfThrones, sans-serif")
      .attr("font-size", size/70+"px")
      .attr("fill", "white");
  
  var subtitle_default = data.length + " Characters' Screen Time";
  var subtitle = g.append("text")
      .text(subtitle_default)
      .attr("xml:space", "preserve")
      .attr("text-anchor", "middle")
      .attr("font-family", "Lato, sans-serif")
      .attr("font-size", size/63+"px")
      .attr("fill", "white")
      .attr("y", size/40);
  
  var subtitle_family = g.append("text")
      .text("")
      .attr("xml:space", "preserve")
      .attr("text-anchor", "middle")
      .attr("font-family", "Lato, sans-serif")
      .attr("font-size", size/63+"px")
      .attr("fill", "white")
      .attr("y", size/10);
  
  bars.on("mouseover", function(d){  title.text(d.data.name);
                                     subtitle.text(d3.round(d.data.minutes + d.data.seconds/60, 1)+" min, "+d.data.episodes+" episodes");
                                     subtitle_family.text(d.data.family);  });
  bars.on("mouseout",  function(d){  title.text(title_default);
                                     subtitle.text(subtitle_default);
                                     subtitle_family.text("");  });
  bars.on("click",     function(d){  window.open(d.data.url, "_blank")  });
}

function sortData(data){
  var filter = "episodes";
  
  //sort by filter
  data.sort(sortProperty(filter));

  //break array into families
  var families = d3.nest()
    .sortValues(sortProperty(filter))
    .key(function(d) { return d.family; })
    .entries(data);
  
  //sort families by total filter
  families.forEach(function(family){
    family.episodes = 0;
    family.values.forEach(function(member){
      family.episodes += member.episodes;
    })
  });
  families.sort(sortProperty(filter));
  
  //move "other" to end no matter what
  families.forEach(function(obj,i){
    if (obj.key === "Other"){
      families.push(families[i])
      families.splice(i,1);
      return;
    }
   });
  
  return flattenTree(families);
}

function flattenTree(tree){
  var arr = [];
  tree.forEach(function(e,i){
    arr.push(e.values);
  });
  
  if (arr[0] instanceof Array) 
    return d3.merge(arr);
  else
    return arr;
}

function arrayFromProperty(arr, prop){
  var new_arr = [];
  arr.forEach(function(value){
    new_arr.push(value[prop]);
  });
  return d3.set(new_arr).values();
}

function sortProperty(property){
  return (function(a, b) {
            if (a[property] < b[property])
              return 1;
            else if (a[property] > b[property])
              return -1;
            return 0;
          });
}

scripts

<script src="http://d3js.org/d3.v3.js"></script>

style.css

@import url(http://fonts.googleapis.com/css?family=Lato);
@font-face {
    font-family: GameOfThrones;
    src: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/29725/got.ttf);
}

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}

.bar {
  &:hover{
    opacity:.8;
    cursor: pointer;
    cursor: hand;
  }
}