uea-data-vis/bubbles.html at master · andyxmas/uea-data-vis · GitHub

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<!--
  Original Demo: http://bl.ocks.org/mbostock/4063269
-->

<!DOCTYPE html>
<meta charset="utf-8">
<style>

text {
  font: 10px sans-serif;
}

</style>
<body>
    <script src="http://d3js.org/d3.v3.min.js"></script>
    <script>

    var xmlhttp = new XMLHttpRequest();
    var url = "uea.json";

    xmlhttp.onreadystatechange = function() {
        if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
            var arr0 = xmlhttp.responseText;
            var arr1 = arr0.substring(1);
            var arr2 = arr1.substring(0, arr1.length - 2)
            var myArr = JSON.parse(arr2);
            myFunction(myArr);
        }
    }
    xmlhttp.open("GET", url, true);
    xmlhttp.send();

    function myFunction(arr) {
        var myData = {
           "name": "flare",
           "children": [
           {
              "name": "arts",
              "children": []
          },
          {
              "name": "itcs",
              "children": []
          },
          {
              "name": "library",
              "children": []
          }

          ]};

          var artsChildren = [];
          var itcsChildren = [];
          var libraryChildren = [];

          for (var key in arr){

            if (key === "room_availability"){
                var room = arr[key];
                for (element in room){
                    if (room[element].group === "arts"){
                        artsChildren.push({"name": room[element].room, "size": room[element].free_seats});
                    };
                    if (room[element].group === "itcs"){
                        itcsChildren.push({"name": room[element].room, "size": room[element].free_seats});
                    };
                    if (room[element].group === "library"){
                        libraryChildren.push({"name": room[element].room, "size": room[element].free_seats});
                    };

                }
            }
        }

        myData["children"][0]["children"] = artsChildren;
        myData["children"][1]["children"] = itcsChildren;
        myData["children"][2]["children"] = libraryChildren;
        myJSON = JSON.stringify(myData);
        console.log(myJSON);

        var diameter = 960,
        format = d3.format(",d"),
        color = d3.scale.category20c();

        var bubble = d3.layout.pack()
        .sort(null)
        .size([diameter, diameter])
        .padding(1.5);

        var svg = d3.select("body").append("svg")
        .attr("width", diameter)
        .attr("height", diameter)
        .attr("class", "bubble");

        root = JSON.parse( myJSON );
        var node = svg.selectAll(".node")
        .data(bubble.nodes(classes(root))
          .filter(function(d) { return !d.children; }))
        .enter().append("g")
        .attr("class", "node")
        .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });

        node.append("title")
        .text(function(d) { return d.className + ": " + format(d.value); });

        node.append("circle")
        .attr("r", function(d) { return d.r; })
        .style("fill", function(d) { return color(d.packageName); });

        node.append("text")
        .attr("dy", ".3em")
        .style("text-anchor", "middle")
        .text(function(d) { return d.className.substring(0, d.r / 3); });

// Returns a flattened hierarchy containing all leaf nodes under the root.
function classes(root) {
  var classes = [];

  function recurse(name, node) {
    if (node.children) node.children.forEach(function(child) { recurse(node.name, child); });
    else classes.push({packageName: name, className: node.name, value: node.size});
}

recurse(null, root);
return {children: classes};
}

d3.select(self.frameElement).style("height", diameter + "px");

}


</script>