mgax · August 29, 2015 14:24
diff --git a/affinity.html b/affinity.html
 <!DOCTYPE html>
 <meta charset="utf-8">
 <style>

 .node circle {
  stroke: #fff;
  stroke-width: 1.5px;
 }

 .link {
  stroke: #999;
  stroke-opacity: .6;
 }

 text {
  pointer-events: none;
 }

 </style>
 <body>
 <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
 <script>

 var width = 960,
    height = 500;

 var color = d3.scale.category20();

 var force = d3.layout.force()
    .charge(-120)
    .linkDistance(80)
    .size([width, height]);

 var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);

 setTimeout(function() {
  var links = [];
  var skills = ['a', 'b', 'c'];
  people.forEach(function(p1, n1) {
    console.log(p1);
    people.forEach(function(p2, n2) {
      if(n2 <= n1) return;
      var like = d3.sum(skills, function(s) {
        s1 = p1.skills[s];
        s2 = p2.skills[s];
        if(s1*s2 < 0) {
          return Math.abs(s1 - s2);
        }
      });
      if(like > 4) {
        var link = {
          source: n1,
          target: n2,
          value: like,
        };
        links.push(link);
        console.log(link);
      }
    });
  });
  graph = {nodes: people, links: links};

  force
      .nodes(graph.nodes)
      .links(graph.links)
      .start();

  var link = svg.selectAll(".link")
      .data(graph.links)
    .enter().append("line")
      .attr("class", "link")
      .style("stroke-width", function(d) { return Math.sqrt(d.value); });

  var node = svg.selectAll(".node")
      .data(graph.nodes)
    .enter().append('g')
      .attr("class", "node")
      .call(force.drag);

  node.append("circle")
      .attr("r", 5)
      .style("fill", function(d) { return color(d.group); });

  node.append('text')
    .text(function(d) { return d.name; });

  force.on("tick", function() {
    link.attr("x1", function(d) { return d.source.x; })
        .attr("y1", function(d) { return d.source.y; })
        .attr("x2", function(d) { return d.target.x; })
        .attr("y2", function(d) { return d.target.y; });

    node.attr('transform', function(d) {
      return 'translate(' + [d.x, d.y] + ')';
    });
  });
 }, 0);


 var people = [
  {name: "one",   skills: {a: -3, b: 0, c: 3}},
  {name: "two",   skills: {a: 0, b: 2, c: 1}},
  {name: "three", skills: {a: 3, b: -2, c: -3}},
  {name: "four",  skills: {a: 2, b: 2, c: 0}},
  {name: "five",  skills: {a: 1, b: -3, c: 2}},
  {name: "six",   skills: {a: -2, b: 0, c: -1}},
 ];

 </script>
	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>

	.node circle {
	stroke: #fff;
	stroke-width: 1.5px;
	}

	.link {
	stroke: #999;
	stroke-opacity: .6;
	}

	text {
	pointer-events: none;
	}

	</style>
	<body>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
	<script>

	var width = 960,
	height = 500;

	var color = d3.scale.category20();

	var force = d3.layout.force()
	.charge(-120)
	.linkDistance(80)
	.size([width, height]);

	var svg = d3.select("body").append("svg")
	.attr("width", width)
	.attr("height", height);

	setTimeout(function() {
	var links = [];
	var skills = ['a', 'b', 'c'];
	people.forEach(function(p1, n1) {
	console.log(p1);
	people.forEach(function(p2, n2) {
	if(n2 <= n1) return;
	var like = d3.sum(skills, function(s) {
	s1 = p1.skills[s];
	s2 = p2.skills[s];
	if(s1*s2 < 0) {
	return Math.abs(s1 - s2);
	}
	});
	if(like > 4) {
	var link = {
	source: n1,
	target: n2,
	value: like,
	};
	links.push(link);
	console.log(link);
	}
	});
	});
	graph = {nodes: people, links: links};

	force
	.nodes(graph.nodes)
	.links(graph.links)
	.start();

	var link = svg.selectAll(".link")
	.data(graph.links)
	.enter().append("line")
	.attr("class", "link")
	.style("stroke-width", function(d) { return Math.sqrt(d.value); });

	var node = svg.selectAll(".node")
	.data(graph.nodes)
	.enter().append('g')
	.attr("class", "node")
	.call(force.drag);

	node.append("circle")
	.attr("r", 5)
	.style("fill", function(d) { return color(d.group); });

	node.append('text')
	.text(function(d) { return d.name; });

	force.on("tick", function() {
	link.attr("x1", function(d) { return d.source.x; })
	.attr("y1", function(d) { return d.source.y; })
	.attr("x2", function(d) { return d.target.x; })
	.attr("y2", function(d) { return d.target.y; });

	node.attr('transform', function(d) {
	return 'translate(' + [d.x, d.y] + ')';
	});
	});
	}, 0);


	var people = [
	{name: "one", skills: {a: -3, b: 0, c: 3}},
	{name: "two", skills: {a: 0, b: 2, c: 1}},
	{name: "three", skills: {a: 3, b: -2, c: -3}},
	{name: "four", skills: {a: 2, b: 2, c: 0}},
	{name: "five", skills: {a: 1, b: -3, c: 2}},
	{name: "six", skills: {a: -2, b: 0, c: -1}},
	];

	</script>