mediawatch treemap

<!DOCTYPE html>
<!--
Generic treemap, based on https://bost.ocks.org/mike/treemap/

-->
<html>
<head>
<meta charset="utf-8">
<title>Zoomable treemap template</title>
<style>

#chart {
  background: #ffffff;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

.title {
    font-weight: bold;
    font-size: 24px;
    text-align: center;
    margin-top: 6px;
    margin-bottom: 6px;
}
text {
  pointer-events: none;
}

.grandparent text {
  font-weight: bold;
}

rect {
  fill: none;
  stroke: #fff;
}

rect.parent,
.grandparent rect {
  stroke-width: 2px;
}

rect.parent {
    pointer-events: none;
}

.grandparent rect {
  fill: orange;
}

.grandparent:hover rect {
  fill: #ee9700;
}

.children rect.parent,
.grandparent rect {
  cursor: pointer;
}

.children rect.parent {
  fill: #bbb;
  fill-opacity: .5;
}

.children:hover rect.child {
  fill: #bbb;
}

</style>
</head>

window.addEventListener('message', function(e) {
    var opts = e.data.opts,
        data = e.data.data;

return main(opts, data);
});

var defaults = {
    margin: {top: 24, right: 0, bottom: 0, left: 0},
    rootname: "TOP",
    format: ",d",
    title: "",
    width: 960,
    height: 500
};

function main(o, data) {
  var root,
      opts = $.extend(true, {}, defaults, o),
      formatNumber = d3.format(opts.format),
      rname = opts.rootname,
      margin = opts.margin,
      theight = 36 + 16;

$('#chart').width(opts.width).height(opts.height);
  var width = opts.width - margin.left - margin.right,
      height = opts.height - margin.top - margin.bottom - theight,
      transitioning;
  
  var color = d3.scale.category20c();
  
  var x = d3.scale.linear()
      .domain([0, width])
      .range([0, width]);
  
  var y = d3.scale.linear()
      .domain([0, height])
      .range([0, height]);
  
  var treemap = d3.layout.treemap()
      .children(function(d, depth) { return depth ? null : d._children; })
      .sort(function(a, b) { return a.value - b.value; })
      .ratio(height / width * 0.5 * (1 + Math.sqrt(5)))
      .round(false);
  
  var svg = d3.select("#chart").append("svg")
      .attr("width", width + margin.left + margin.right)
      .attr("height", height + margin.bottom + margin.top)
      .style("margin-left", -margin.left + "px")
      .style("margin.right", -margin.right + "px")
    .append("g")
      .attr("transform", "translate(" + margin.left + "," + margin.top + ")")
      .style("shape-rendering", "crispEdges");
  
  var grandparent = svg.append("g")
      .attr("class", "grandparent");
  
  grandparent.append("rect")
      .attr("y", -margin.top)
      .attr("width", width)
      .attr("height", margin.top);
  
  grandparent.append("text")
      .attr("x", 6)
      .attr("y", 6 - margin.top)
      .attr("dy", ".75em");

if (opts.title) {
    $("#chart").prepend("<p class='title'>" + opts.title + "</p>");
  }
  if (data instanceof Array) {
    root = { key: rname, values: data };
  } else {
    root = data;
  }
    
  initialize(root);
  accumulate(root);
  layout(root);
  console.log(root);
  display(root);

if (window.parent !== window) {
    var myheight = document.documentElement.scrollHeight || document.body.scrollHeight;
    window.parent.postMessage({height: myheight}, '*');
  }

function initialize(root) {
    root.x = root.y = 0;
    root.dx = width;
    root.dy = height;
    root.depth = 0;
  }

// Aggregate the values for internal nodes. This is normally done by the
  // treemap layout, but not here because of our custom implementation.
  // We also take a snapshot of the original children (_children) to avoid
  // the children being overwritten when when layout is computed.
  function accumulate(d) {
    return (d._children = d.values)
        ? d.value = d.values.reduce(function(p, v) { return p + accumulate(v); }, 0)
        : d.value;
  }

// Compute the treemap layout recursively such that each group of siblings
  // uses the same size (1×1) rather than the dimensions of the parent cell.
  // This optimizes the layout for the current zoom state. Note that a wrapper
  // object is created for the parent node for each group of siblings so that
  // the parent’s dimensions are not discarded as we recurse. Since each group
  // of sibling was laid out in 1×1, we must rescale to fit using absolute
  // coordinates. This lets us use a viewport to zoom.
  function layout(d) {
    if (d._children) {
      treemap.nodes({_children: d._children});
      d._children.forEach(function(c) {
        c.x = d.x + c.x * d.dx;
        c.y = d.y + c.y * d.dy;
        c.dx *= d.dx;
        c.dy *= d.dy;
        c.parent = d;
        layout(c);
      });
    }
  }

function display(d) {
    grandparent
        .datum(d.parent)
        .on("click", transition)
      .select("text")
        .text(name(d));

var g1 = svg.insert("g", ".grandparent")
        .datum(d)
        .attr("class", "depth");

var g = g1.selectAll("g")
        .data(d._children)
      .enter().append("g");

g.filter(function(d) { return d._children; })
        .classed("children", true)
        .on("click", transition);

var children = g.selectAll(".child")
        .data(function(d) { return d._children || [d]; })
      .enter().append("g");

children.append("rect")
        .attr("class", "child")
        .call(rect)
      .append("title")
        .text(function(d) { return d.key + " (" + formatNumber(d.value) + ")"; });
    children.append("text")
        .attr("class", "ctext")
        .text(function(d) { return d.key; })
        .call(text2);

g.append("rect")
        .attr("class", "parent")
        .call(rect);

var t = g.append("text")
        .attr("class", "ptext")
        .attr("dy", ".75em")

t.append("tspan")
        .text(function(d) { return d.key; });
    t.append("tspan")
        .attr("dy", "1.0em")
        .text(function(d) { return formatNumber(d.value); });
    t.call(text);

g.selectAll("rect")
        .style("fill", function(d) { return color(d.key); });

function transition(d) {
      if (transitioning || !d) return;
      transitioning = true;

var g2 = display(d),
          t1 = g1.transition().duration(750),
          t2 = g2.transition().duration(750);

// Update the domain only after entering new elements.
      x.domain([d.x, d.x + d.dx]);
      y.domain([d.y, d.y + d.dy]);

// Enable anti-aliasing during the transition.
      svg.style("shape-rendering", null);

// Draw child nodes on top of parent nodes.
      svg.selectAll(".depth").sort(function(a, b) { return a.depth - b.depth; });

// Fade-in entering text.
      g2.selectAll("text").style("fill-opacity", 0);

// Transition to the new view.
      t1.selectAll(".ptext").call(text).style("fill-opacity", 0);
      t1.selectAll(".ctext").call(text2).style("fill-opacity", 0);
      t2.selectAll(".ptext").call(text).style("fill-opacity", 1);
      t2.selectAll(".ctext").call(text2).style("fill-opacity", 1);
      t1.selectAll("rect").call(rect);
      t2.selectAll("rect").call(rect);

// Remove the old node when the transition is finished.
      t1.remove().each("end", function() {
        svg.style("shape-rendering", "crispEdges");
        transitioning = false;
      });
    }

return g;
  }

function name(d) {
    return d.parent
        ? name(d.parent) + " / " + d.key + " (" + formatNumber(d.value) + ")"
        : d.key + " (" + formatNumber(d.value) + ")";
  }
}

if (window.location.hash === "") {
    d3.json("countries.json", function(err, res) {
        if (!err) {
            console.log(res);
            var data = d3.nest().key(function(d) { return d.region; }).key(function(d) { return d.subregion; }).entries(res);
            main({title: "MediaWatch"}, {key: "Programmes", values: data});
        }
    });
}

</script>
</body>
</html>

Modified http://code.jquery.com/jquery-1.7.2.min.js to a secure url

Modified http://d3js.org/d3.v3.min.js to a secure url

https://code.jquery.com/jquery-1.7.2.min.js

https://d3js.org/d3.v3.min.js