d3.grid - d3.js v4(wip) by davo

index.html

<!DOCTYPE html>
<meta charset="utf-8">
<!-- Based on https://gist.github.com/basilesimon/a94e465726eb88e75609316310ffca01 -->
<style>

</style>
<body>
<script src="//d3js.org/d3.v4.min.js"></script>
<script src="d3-grid.js"></script>
<script>
var con  = [],
    lab = [];

var width = 960,
    height = 500;

//var color = d3.scale.category10();

var pointGrid = d3.grid()
  .points()
  .size([100, 100]);

var svg = d3.select("body").append("svg")
  .attr('width', width)
  .attr('height', height)
.append("g")
  .attr("transform", "translate(70,70)");

var concontainer = svg.append('g')
    .attr("transform", "translate(70,70)")
    .style('background-color', 'lightblue');
var labcontainer = svg.append('g')
    .attr("transform", "translate(370,70)")
    .style('background-color', 'lightcoral');

var tick = setInterval(push, 500);

function update(){

  var condots = concontainer.selectAll(".point")
    .data(pointGrid(con));
  condots.enter().append("circle")
    .attr("class", "point")
    .attr("r", 1e-6)
    .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
  condots.transition()
    .attr("r", 10)
    .attr('fill', 'orange')
    .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
  condots.exit().transition()
    .attr("r", 1e-6)
    .remove();

  var labdots = labcontainer.selectAll(".point")
      .data(pointGrid(lab));
  labdots.enter().append("circle")
    .attr("class", "point")
    .attr("r", 1e-6)
    .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
  labdots.transition()
    .attr("r", 10)
    .attr('fill', 'steelblue')
    .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
  labdots.exit().transition()
    .attr("r", 1e-6)
    .remove();
}

function push() {
  var i = Math.floor(Math.random() * (5 - 1 + 1)) + 1;
  while(i>1) {
    con.push({});
    i--;
  }
  var y = Math.floor(Math.random() * (7 - 1 + 1)) + 1;
  while(y>1) {
    lab.push({});
    y--;
  }
  lab.push({});
  update();
  if (con.length > 10) {
    clearInterval(tick);
    tick = setInterval(pop, 500);
  }
}

function pop() {
  con.pop();
  lab.pop();
  update();
  if (con.length < 2) {
    clearInterval(tick);
    tick = setInterval(push, 500);
  }
}
</script>

d3-comparator.js

(function() {
  d3.comparator = function() {
    var cmps = [], accessors = [];

    var comparator = function(a, b) {
      var i = -1, 
          n = cmps.length, 
          result;
      while (++i < n) {
        result = cmps[i](accessors[i](a), accessors[i](b));
        if (result !== 0) return result;
      }
      return 0;
    }

    comparator.order = function(cmp, accessor) {
      cmps.push(cmp);
      accessors.push(accessor || identity);
      return comparator;
    }

    return comparator;
  }
  
  function identity(d) { return d; }
})();

d3-grid.js

(function() {
  d3.grid = function() {
    var mode = "equal",
        layout = _distributeEqually,
        x = d3.scaleOrdinal(),
        y = d3.scaleOrdinal(),
        size = [1, 1],
        actualSize = [0, 0],
        nodeSize = false,
        bands = false,
        padding = [0, 0],
        cols, rows;

    function grid(nodes) {
      return layout(nodes);
    }

    function _distributeEqually(nodes) {
      var i = -1, 
          n = nodes.length,
          _cols = cols ? cols : 0,
          _rows = rows ? rows : 0,
          col, row;

      if (_rows && !_cols) {
        _cols = Math.ceil(n / _rows)
      } else {
        _cols || (_cols = Math.ceil(Math.sqrt(n)));
        _rows || (_rows = Math.ceil(n / _cols));
      }

      if (nodeSize) {
        x.domain(d3.range(_cols)).range(d3.range(0, (size[0] + padding[0]) * _cols, size[0] + padding[0]));
        y.domain(d3.range(_rows)).range(d3.range(0, (size[1] + padding[1]) * _rows, size[1] + padding[1]));
        actualSize[0] = bands ? x(_cols - 1) + size[0] : x(_cols - 1);
        actualSize[1] = bands ? y(_rows - 1) + size[1] : y(_rows - 1);
      } else if (bands) {
        x.domain(d3.range(_cols))//.bandwidth([0, size[0]], padding[0], 0);
        y.domain(d3.range(_rows))//.bandwidth([0, size[1]], padding[1], 0);
        actualSize[0] = x.bandwidth();
        actualSize[1] = y.bandwidth();
      } else {
        var x = d3.scalePoint()
        var y = d3.scalePoint()
        x.domain(d3.range(_cols)).range([0, size[0]]);
        y.domain(d3.range(_rows)).range([0, size[1]]);
        actualSize[0] = x(1);
        actualSize[1] = y(1);
      }

      while (++i < n) {
        col = i % _cols;
        row = Math.floor(i / _cols);
        nodes[i].x = x(col);
        nodes[i].y = y(row);
      }

      return nodes;
    }

    grid.size = function(value) {
      if (!arguments.length) return nodeSize ? actualSize : size;
      actualSize = [0, 0];
      nodeSize = (size = value) == null;
      return grid;
    }

    grid.nodeSize = function(value) {
      if (!arguments.length) return nodeSize ? size : actualSize;
      actualSize = [0, 0];
      nodeSize = (size = value) != null;
      return grid;
    }

    grid.rows = function(value) {
      if (!arguments.length) return rows;
      rows = value;
      return grid;
    }

    grid.cols = function(value) {
      if (!arguments.length) return cols;
      cols = value;
      return grid;
    }

    grid.bands = function() {
      bands = true;
      return grid;
    }

    grid.points = function() {
      bands = false;
      return grid;
    }

    grid.padding = function(value) {
      if (!arguments.length) return padding;
      padding = value;
      return grid;
    }

    return grid;
  };
})();