D3 Examples - wk_7

wk_7_v2
what we can see with this chart is the different groups that are created by the matrix of different states. Compared to the node link diagram chart, this one shows a more granular grouping, and is much easier to follow. What is also interesting about this visualization, is that based on a particular order of our elements,w e are able to see trends much easier, especially when they re-arrange into their correct positions.
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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
  <style>
    .background {
  fill: #eee;
}
​
line {
  stroke: #fff;
}
​
text.active {
  fill: red;
}
    
    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: 80, right: 0, bottom: 10, left: 80},
    width = 720,
    height = 720;
​
var x = d3.scale.ordinal().rangeBands([0, width]),
    z = d3.scale.linear().domain([0, 4]).clamp(true),
    c = d3.scale.category10().domain(d3.range(10));
​
var svg = d3.select("body").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
    .style("margin-left", -margin.left + "px")
  .append("g")
    .attr("transform", "translate(" + 200 + "," + margin.top + ")");
​
d3.json("dataset.json", function(miserables) {
  var matrix = [],
      nodes = miserables.nodes,
      n = nodes.length;
​
  // Compute index per node.
  nodes.forEach(function(node, i) {
    node.index = i;
    node.count = 0;
    matrix[i] = d3.range(n).map(function(j) { return {x: j, y: i, z: 0}; });
  });
​
  // Convert links to matrix; count character occurrences.
  miserables.links.forEach(function(link) {
    matrix[link.source][link.target].z += link.value;
    matrix[link.target][link.source].z += link.value;
    matrix[link.source][link.source].z += link.value;
    matrix[link.target][link.target].z += link.value;
    nodes[link.source].count += link.value;
    nodes[link.target].count += link.value;
  });
​
  // Precompute the orders.
  var orders = {
    name: d3.range(n).sort(function(a, b) { return d3.ascending(nodes[a].name, nodes[b].name); }),
    count: d3.range(n).sort(function(a, b) { return nodes[b].count - nodes[a].count; }),
    group: d3.range(n).sort(function(a, b) { return nodes[b].group - nodes[a].group; })
  };
​
  // The default sort order.
  x.domain(orders.name);
​
  svg.append("rect")
      .attr("class", "background")
      .attr("width", width)
      .attr("height", height);
​
  var row = svg.selectAll(".row")
      .data(matrix)
    .enter().append("g")
      .attr("class", "row")
      .attr("transform", function(d, i) { return "translate(0," + x(i) + ")"; })
      .each(row);
​
  row.append("line")
      .attr("x2", width);
​
  row.append("text")
      .attr("x", -6)
      .attr("y", x.rangeBand() / 2)
      .attr("dy", ".32em")
      .attr("text-anchor", "end")
      .text(function(d, i) { return nodes[i].name; });
​
  var column = svg.selectAll(".column")
      .data(matrix)
    .enter().append("g")
      .attr("class", "column")
      .attr("transform", function(d, i) { return "translate(" + x(i) + ")rotate(-90)"; });
​
  column.append("line")
      .attr("x1", -width);
​
  column.append("text")
      .attr("x", 6)
      .attr("y", x.rangeBand() / 2)
      .attr("dy", ".32em")
      .attr("text-anchor", "start")
      .text(function(d, i) { return nodes[i].name; });
​
  function row(row) {
    var cell = d3.select(this).selectAll(".cell")
        .data(row.filter(function(d) { return d.z; }))
      .enter().append("rect")
        .attr("class", "cell")
        .attr("x", function(d) { return x(d.x); })
        .attr("width", x.rangeBand())
        .attr("height", x.rangeBand())
        .style("fill-opacity", function(d) { return z(d.z); })
        .style("fill", function(d) { return nodes[d.x].group == nodes[d.y].group ? c(nodes[d.x].group) : null; })
        .on("mouseover", mouseover)
        .on("mouseout", mouseout);
  }
​
  function mouseover(p) {
    d3.selectAll(".row text").classed("active", function(d, i) { return i == p.y; });
    d3.selectAll(".column text").classed("active", function(d, i) { return i == p.x; });
  }
​
  function mouseout() {
    d3.selectAll("text").classed("active", false);
  }
​
  d3.select("#order").on("change", function() {
    clearTimeout(timeout);
    order(this.value);
  });
​
  function order(value) {
    x.domain(orders[value]);
​
    var t = svg.transition().duration(2500);
​
    t.selectAll(".row")
        .delay(function(d, i) { return x(i) * 4; })
        .attr("transform", function(d, i) { return "translate(0," + x(i) + ")"; })
      .selectAll(".cell")
        .delay(function(d) { return x(d.x) * 4; })
        .attr("x", function(d) { return x(d.x); });
​
    t.selectAll(".column")
        .delay(function(d, i) { return x(i) * 4; })
        .attr("transform", function(d, i) { return "translate(" + x(i) + ")rotate(-90)"; });
  }
​
  var timeout = setTimeout(function() {
    order("group");
    d3.select("#order").property("selectedIndex", 2).node().focus();
  }, 5000);
});
  </script>
</body>
​
    