block by nitaku 8ae3fd45fca0f18372d4

Half matrix II

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A different take on the previous experiment, this time using a color encoding and without complex cursors (hopefully resulting in a more readable code).

index.js

// Generated by CoffeeScript 1.4.0
(function() {
  var DIST, SIDE, height, svg, vis, width;

  SIDE = 7;

  DIST = 8;

  svg = d3.select('svg');

  width = svg.node().getBoundingClientRect().width;

  height = svg.node().getBoundingClientRect().height;

  vis = svg.append('g').attr({
    transform: "translate(" + (width / 2) + ", " + (height - 10) + ")"
  });

  d3.json('miserables.json', function(data) {
    var PAD, cellcolor, cells, icells, interactive_cells, labels_a, labels_b, length, max;
    length = data.nodes.length;
    max = d3.max(data.links, function(d) {
      return d.value;
    });
    cellcolor = function(x) {
      return d3.hcl(270 - 40 * x / max, 30 - Math.pow(max / 2 - x, 2) / 400, 100 - 100 * x / max);
    };
    data.links.forEach(function(l) {
      l.source = data.nodes[l.source];
      return l.target = data.nodes[l.target];
    });
    data.nodes.forEach(function(d, i) {
      return d.i = i;
    });
    cells = vis.selectAll('.cell').data(data.links);
    cells.enter().append('rect').attr({
      "class": 'cell',
      x: -SIDE / 2,
      y: -SIDE / 2,
      width: SIDE,
      height: SIDE,
      transform: function(d) {
        return "rotate(-45) translate(" + ((d.source.i - length / 2) * DIST) + "," + ((d.target.i - length / 2) * DIST) + ")";
      },
      fill: function(d) {
        return cellcolor(d.value);
      }
    });
    PAD = 4;
    labels_a = vis.selectAll('.label_a').data(data.nodes.slice(1));
    labels_a.enter().append('text').each(function(d) {
      return d.label_a = d3.select(this);
    }).text(function(d) {
      return d.name;
    }).attr({
      "class": 'label label_a',
      dy: '0.35em',
      transform: function(d) {
        return "rotate(45) translate(" + (-length / 2 * DIST - PAD - DIST / 2) + "," + ((-d.i + length / 2) * DIST) + ")";
      }
    });
    labels_b = vis.selectAll('.label_b').data(data.nodes.slice(0, -1));
    labels_b.enter().append('text').each(function(d) {
      return d.label_b = d3.select(this);
    }).text(function(d) {
      return d.name;
    }).attr({
      "class": 'label label_b',
      dy: '0.35em',
      transform: function(d) {
        return "rotate(-45) translate(" + (length / 2 * DIST + PAD - DIST / 2) + "," + ((d.i - length / 2) * DIST) + ")";
      }
    });
    icells = [];
    d3.range(0, length).forEach(function(y) {
      return d3.range(y + 1, length).forEach(function(x) {
        return icells.push({
          x: x,
          y: y,
          source: data.nodes[x],
          target: data.nodes[y]
        });
      });
    });
    interactive_cells = vis.selectAll('.interactive_cell').data(icells);
    return interactive_cells.enter().append('rect').attr({
      "class": 'interactive_cell',
      x: -DIST / 2,
      y: -DIST / 2,
      width: DIST,
      height: DIST,
      transform: function(d) {
        return "rotate(-45) translate(" + ((d.x - length / 2) * DIST) + "," + ((d.y - length / 2) * DIST) + ")";
      }
    }).on('mouseenter', function(d) {
      d.source.label_a.classed('highlighted_x', true);
      return d.target.label_b.classed('highlighted_y', true);
    }).on('mouseleave', function(d) {
      d.source.label_a.classed('highlighted_x', false);
      return d.target.label_b.classed('highlighted_y', false);
    });
  });

}).call(this);

index.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Half matrix for symmetrical relations</title>
    <link type="text/css" href="index.css" rel="stylesheet"/>
    <script src="//d3js.org/d3.v3.min.js"></script>
  </head>
  <body>
        <svg height="500" width="960"></svg>
        <script src="index.js"></script>
  </body>
</html>

index.coffee

SIDE = 7
DIST = 8

svg = d3.select('svg')
width = svg.node().getBoundingClientRect().width
height = svg.node().getBoundingClientRect().height

vis = svg.append('g')
  .attr
    transform: "translate(#{width/2}, #{height-10})"

d3.json 'miserables.json', (data) ->
  length = data.nodes.length
  max = d3.max data.links, (d) -> d.value

  cellcolor = (x) -> d3.hcl(270-40*x/max, 30-Math.pow(max/2-x,2)/400, 100-100*x/max)

  # objectify the graph
  data.links.forEach (l) ->
    l.source = data.nodes[l.source]
    l.target = data.nodes[l.target]

  # store the index of the node within its object, in order to use it when placing link cells
  data.nodes.forEach (d, i) ->
    d.i = i

  # draw the cells containing data
  cells = vis.selectAll('.cell')
    .data(data.links)

  cells.enter().append('rect')
    .attr
      class: 'cell'
      x: -SIDE/2
      y: -SIDE/2
      width: SIDE
      height: SIDE
      transform: (d) -> "rotate(-45) translate(#{(d.source.i-length/2)*DIST},#{(d.target.i-length/2)*DIST})"
      fill: (d) -> cellcolor(d.value)

  # draw the labels
  PAD = 4
  labels_a = vis.selectAll('.label_a')
    .data(data.nodes.slice(1)) # first label is useless, the diagonal is not shown

  labels_a.enter().append('text')
    .each((d) -> d.label_a = d3.select(this))
    .text((d) -> d.name)
    .attr
      class: 'label label_a'
      dy: '0.35em'
      transform: (d) -> "rotate(45) translate(#{-length/2*DIST-PAD-DIST/2},#{(-d.i+length/2)*DIST})"

  labels_b = vis.selectAll('.label_b')
    .data(data.nodes.slice(0,-1)) # last label is useless, the diagonal is not shown

  labels_b.enter().append('text')
    .each((d) -> d.label_b = d3.select(this))
    .text((d) -> d.name)
    .attr
      class: 'label label_b'
      dy: '0.35em'
      transform: (d) -> "rotate(-45) translate(#{length/2*DIST+PAD-DIST/2},#{(d.i-length/2)*DIST})"

  # create "interactive" cells to show the cursors
  icells = []
  d3.range(0, length).forEach (y) ->
    d3.range(y+1, length).forEach (x) ->
      icells.push {x: x, y: y, source: data.nodes[x], target: data.nodes[y]}

  interactive_cells = vis.selectAll('.interactive_cell')
    .data(icells)

  interactive_cells.enter().append('rect')
    .attr
      class: 'interactive_cell'
      x: -DIST/2
      y: -DIST/2
      width: DIST
      height: DIST
      transform: (d) -> "rotate(-45) translate(#{(d.x-length/2)*DIST},#{(d.y-length/2)*DIST})"
    .on 'mouseenter', (d) ->
      d.source.label_a.classed('highlighted_x', true)
      d.target.label_b.classed('highlighted_y', true)
    .on 'mouseleave', (d) ->
      d.source.label_a.classed('highlighted_x', false)
      d.target.label_b.classed('highlighted_y', false)

index.css

@font-face {
  font-family: "Lacuna";
  src: url("lacuna.ttf");
}

.label {
  font-family: "Lacuna";
  font-size: 8px;
}
.highlighted_x.label {
  font-weight: bold;
  fill: #E21975;
}
.highlighted_y.label {
  font-weight: bold;
  fill: #FF7100;
}
.label_a {
  text-anchor: end;
}

.interactive_cell {
  fill: transparent;
}
.interactive_cell:hover {
  stroke: #FF3B1C;
}

miserables.json

{
  "nodes":[
    {"name":"Myriel","group":1},
    {"name":"Napoleon","group":1},
    {"name":"Mlle.Baptistine","group":1},
    {"name":"Mme.Magloire","group":1},
    {"name":"CountessdeLo","group":1},
    {"name":"Geborand","group":1},
    {"name":"Champtercier","group":1},
    {"name":"Cravatte","group":1},
    {"name":"Count","group":1},
    {"name":"OldMan","group":1},
    {"name":"Labarre","group":2},
    {"name":"Valjean","group":2},
    {"name":"Marguerite","group":3},
    {"name":"Mme.deR","group":2},
    {"name":"Isabeau","group":2},
    {"name":"Gervais","group":2},
    {"name":"Tholomyes","group":3},
    {"name":"Listolier","group":3},
    {"name":"Fameuil","group":3},
    {"name":"Blacheville","group":3},
    {"name":"Favourite","group":3},
    {"name":"Dahlia","group":3},
    {"name":"Zephine","group":3},
    {"name":"Fantine","group":3},
    {"name":"Mme.Thenardier","group":4},
    {"name":"Thenardier","group":4},
    {"name":"Cosette","group":5},
    {"name":"Javert","group":4},
    {"name":"Fauchelevent","group":0},
    {"name":"Bamatabois","group":2},
    {"name":"Perpetue","group":3},
    {"name":"Simplice","group":2},
    {"name":"Scaufflaire","group":2},
    {"name":"Woman1","group":2},
    {"name":"Judge","group":2},
    {"name":"Champmathieu","group":2},
    {"name":"Brevet","group":2},
    {"name":"Chenildieu","group":2},
    {"name":"Cochepaille","group":2},
    {"name":"Pontmercy","group":4},
    {"name":"Boulatruelle","group":6},
    {"name":"Eponine","group":4},
    {"name":"Anzelma","group":4},
    {"name":"Woman2","group":5},
    {"name":"MotherInnocent","group":0},
    {"name":"Gribier","group":0},
    {"name":"Jondrette","group":7},
    {"name":"Mme.Burgon","group":7},
    {"name":"Gavroche","group":8},
    {"name":"Gillenormand","group":5},
    {"name":"Magnon","group":5},
    {"name":"Mlle.Gillenormand","group":5},
    {"name":"Mme.Pontmercy","group":5},
    {"name":"Mlle.Vaubois","group":5},
    {"name":"Lt.Gillenormand","group":5},
    {"name":"Marius","group":8},
    {"name":"BaronessT","group":5},
    {"name":"Mabeuf","group":8},
    {"name":"Enjolras","group":8},
    {"name":"Combeferre","group":8},
    {"name":"Prouvaire","group":8},
    {"name":"Feuilly","group":8},
    {"name":"Courfeyrac","group":8},
    {"name":"Bahorel","group":8},
    {"name":"Bossuet","group":8},
    {"name":"Joly","group":8},
    {"name":"Grantaire","group":8},
    {"name":"MotherPlutarch","group":9},
    {"name":"Gueulemer","group":4},
    {"name":"Babet","group":4},
    {"name":"Claquesous","group":4},
    {"name":"Montparnasse","group":4},
    {"name":"Toussaint","group":5},
    {"name":"Child1","group":10},
    {"name":"Child2","group":10},
    {"name":"Brujon","group":4},
    {"name":"Mme.Hucheloup","group":8}
  ],
  "links":[
    {"source":1,"target":0,"value":1},
    {"source":2,"target":0,"value":8},
    {"source":3,"target":0,"value":10},
    {"source":3,"target":2,"value":6},
    {"source":4,"target":0,"value":1},
    {"source":5,"target":0,"value":1},
    {"source":6,"target":0,"value":1},
    {"source":7,"target":0,"value":1},
    {"source":8,"target":0,"value":2},
    {"source":9,"target":0,"value":1},
    {"source":11,"target":10,"value":1},
    {"source":11,"target":3,"value":3},
    {"source":11,"target":2,"value":3},
    {"source":11,"target":0,"value":5},
    {"source":12,"target":11,"value":1},
    {"source":13,"target":11,"value":1},
    {"source":14,"target":11,"value":1},
    {"source":15,"target":11,"value":1},
    {"source":17,"target":16,"value":4},
    {"source":18,"target":16,"value":4},
    {"source":18,"target":17,"value":4},
    {"source":19,"target":16,"value":4},
    {"source":19,"target":17,"value":4},
    {"source":19,"target":18,"value":4},
    {"source":20,"target":16,"value":3},
    {"source":20,"target":17,"value":3},
    {"source":20,"target":18,"value":3},
    {"source":20,"target":19,"value":4},
    {"source":21,"target":16,"value":3},
    {"source":21,"target":17,"value":3},
    {"source":21,"target":18,"value":3},
    {"source":21,"target":19,"value":3},
    {"source":21,"target":20,"value":5},
    {"source":22,"target":16,"value":3},
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    {"source":76,"target":58,"value":1}
  ]
}