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/* ------------------------------------------------------------------------------
*
* # D3.js - bubble chart
*
* Demo of a bubble chart setup with tooltip and .json data source
*
* ---------------------------------------------------------------------------- */
// Setup module
// ------------------------------
var D3Bubbles = function() {
//
// Setup module components
//
// Chart
var _bubbles = function() {
if (typeof d3 == 'undefined') {
console.warn('Warning - d3.min.js is not loaded.');
return;
}
// Main variables
var element = document.getElementById('d3-bubbles'),
diameter = 700;
// Initialize chart only if element exsists in the DOM
if(element) {
// Basic setup
// ------------------------------
// Format data
var format = d3.format(",d");
// Color scale
color = d3.scale.category10();
// Create chart
// ------------------------------
var svg = d3.select(element).append("svg")
.attr("width", diameter)
.attr("height", diameter)
.attr("class", "bubble");
// Create chart
// ------------------------------
// Add tooltip
var tip = d3.tip()
.attr('class', 'd3-tip')
.offset([-5, 0])
.html(function(d) {
return d.className + ": " + format(d.value);;
});
// Initialize tooltip
svg.call(tip);
// Construct chart layout
// ------------------------------
// Pack
var bubble = d3.layout.pack()
.sort(null)
.size([diameter, diameter])
.padding(1.5);
// Load data
// ------------------------------
d3.json("../../../../global_assets/demo_data/d3/other/bubble.json", function(error, root) {
//
// Append chart elements
//
// Bind data
var node = svg.selectAll(".d3-bubbles-node")
.data(bubble.nodes(classes(root))
.filter(function(d) { return !d.children; }))
.enter()
.append("g")
.attr("class", "d3-bubbles-node")
.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
// Append circles
node.append("circle")
.attr("r", function(d) { return d.r; })
.style("fill", function(d) { return color(d.packageName); })
.on('mouseover', tip.show)
.on('mouseout', tip.hide);
// Append text
node.append("text")
.attr("dy", ".3em")
.style("fill", "#fff")
.style("font-size", 12)
.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};
}
}
};
//
// Return objects assigned to module
//
return {
init: function() {
_bubbles();
}
}
}();
// Initialize module
// ------------------------------
document.addEventListener('DOMContentLoaded', function() {
D3Bubbles.init();
});