vertical horizontal nesting (grids)

<!DOCTYPE html>
<meta charset="utf-8">
<style>
  rect {
    fill: none;
    stroke: black;
    stroke-width: 1;
  }
</style>
<body>
<script src="https://d3js.org/d3.v4.js"></script>
<script src="https://romsson.github.io/d3-gridding/build/d3-gridding.js"></script>
<script>

var width = 400,
    height = 400,
    n = 9,
    data =  d3.range(n),
    max_depth = 4,
    root_grid = 49,
    node_grid = 3;

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

var root_params = {
  "size": [width, height],
  "offset": [0, 0],
  "mode": "grid"
};

function draw_rect(d) {
  svg.append("rect")
      .attr("width", d.width)
      .attr("height", d.height)
      .attr("transform", "translate(" + d.x + "," + d.y + ")");
}

function generate_layout(params, data = d3.range(root_grid), depth = 0) {

var gridding = d3.gridding()
    .params(params);

var griddingData = gridding(data);

if(depth < max_depth) {

griddingData.forEach(function(d, i) {

draw_rect(d);

var grid_type = (i % 2) === 0 ? "vertical": "horizontal";

var node_params = {
        "size": [d.width, d.height],
        "offset": [d.x, d.y],
        "mode": grid_type
      };

generate_layout(node_params, d3.range(node_grid), depth + 1);
    });
  }
}

generate_layout(root_params);

</script>
</body>

Modified http://d3js.org/d3.v4.js to a secure url

Modified http://romsson.github.io/d3-gridding/build/d3-gridding.js to a secure url

https://d3js.org/d3.v4.js

https://romsson.github.io/d3-gridding/build/d3-gridding.js