visfest block visualization 2

forked from sxywu's block: visfest block visualization

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.10.1/lodash.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
    svg { width: 100%; height: 100%; }
  </style>
</head>

<body>
  <script>
    var margin = {top: 20, right: 10, bottom: 20, left: 10};
    var width = 1024 - margin.left - margin.right;
    var height = 968 - margin.top - margin.bottom;
    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 + ")");

d3.json('data.json', function(data) {
      var linkStrengths = [];
      var api = _.chain(data)
      	.pluck('api')
      	.map(function(api) {return _.pairs(api)})
      	.flatten().compact()
      	.filter(function(api) {return !_.contains(ignoreApi, api[0])})
      	.reduce(function(memo, api) {
          linkStrengths.push(api[1]);
          if (!memo[api[0]]) {
            memo[api[0]] = 0;
          }
          memo[api[0]] += api[1];
          return memo;
        }, {})
      	.value();
      var colors = d3.scale.category20();
      var sizeScale = d3.scale.linear()
      	.domain([_.min(api), _.max(api)])
      	.range([5, 40]);
      console.log(linkStrengths)
      var strengthScale = d3.scale.linear()
      	.domain([_.min(linkStrengths), _.max(linkStrengths)])
      	.range([0, 1]);
      var radius = 400;
     	var apiNodes = _.chain(api)
      	.map(function(count, name) {
          api[name] = {
            name,
            size: sizeScale(count),
            fill: colors(name),
            fixed: true,
            type: 'api'
          };
          return api[name];
        }).sortBy(function(node) {
        	return -node.size;  
        }).map(function(node, i) {
          var radian = (2 * Math.PI) / _.size(api) * i - (Math.PI / 2);
          node.x = radius * Math.cos(radian) + (width / 2);
          node.y = radius * Math.sin(radian) + (height / 2);
          return node;
        }).value();
      var blockNodes = _.map(data, function(block) {
        var node = {
          id: block.id,
          title: block.description,
          user: block.userId,
          image: block.thumbnail,
          size: 15,
          stroke: '#999'
        };
        _.each(block.api, function(count, apiName) {
          if (_.contains(ignoreApi, apiName)) return;
          links.push({
            source: node,
            target: api[apiName],
            size: count,
            strength: strengthScale(count)
          });
        });

return node;
      });
      
      nodes = _.union(apiNodes, blockNodes);
      force.nodes(nodes).links(links)
      	.start();
      
      enter();
    });
  </script>
</body>

https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.10.1/lodash.min.js

https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js