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Project collaboration2

forked from e-crins's block: Project collaboration

<!DOCTYPE html>
<html>
	<head>
		<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
		<title>Collaborations</title>
	
		
		<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js" charset="utf-8"></script>
		
		
		<link href='https://fonts.googleapis.com/css?family=Bangers' rel='stylesheet' type='text/css'>
		<link href='https://fonts.googleapis.com/css?family=Oswald' rel='stylesheet' type='text/css'>
		<link href='https://fonts.googleapis.com/css?family=Lato:400,900' rel='stylesheet' type='text/css'>
		
		
		<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
		
		<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css" rel="stylesheet">
		<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/js/bootstrap.min.js"></script>
	
		
		<script src="bootstrap.tooltip.js"></script>
		<script src="bootstrap.popover.js"></script>
		
		<script src="d3.layout.chord.sort.js"></script>
		
		<style>
			body {
			  font-size: 14px;
			  font-family: 'Lato', sans-serif;
			  text-align: left;
			  color: #757575;
			  cursor: default;
			}
			
			.title {
				margin-top: 20px;
				margin-bottom: 10px;
				margin-left: 20px;
				font-size:32px;
				font-family: 'Oswald', sans-serif;
				color: #2B2B2B;
			}
			
			.texts {
				margin-left: 20px;
				margin-right: 20px;
				line-height: 140%;
			}
			
			.credit {
				color: #9E9E9E;
				font-size: 10px;
				margin-bottom: 0.5em;
			}
			
			.notes {
				color: #9E9E9E;
				font-size: 10px;
			}
			
			.popover {
				pointer-events: none;
			}
			
			#chart{
			  font-size: 16px;
			  font-family: 'Bangers', sans-serif;
			  text-align: center;
			  fill: #2B2B2B;
			}
			
			@media (min-width: 600px) {
				#chart{
					font-size: 20px;
				}
			}
		</style>
	</head>
	<body>
	
		<div class = "title">collaborations</div>
		<div class = "explanation texts">
			<p style="margin-bottom: 0em;">The visualization below shows how often the people collaborated.</p>
			</div>
		<div id = "chart"></div>
		<div class="credit texts">Created by Nadieh Bremer | <a href="https://www.visualcinnamon.com/">VisualCinnamon.com</a></div>
		<div class = "notes texts">
			Just professional collabobations</div>
 
		<script src="script.js"></script>

</body>
</html>

bootstrap.popover.js
#

/* ========================================================================
 * Bootstrap: popover.js v3.1.1
 * https://getbootstrap.com/javascript/#popovers
 * ========================================================================
 * Copyright 2011-2014 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */

+function ($) {
  'use strict';

// POPOVER PUBLIC CLASS DEFINITION
  // ===============================

var Popover = function (element, options) {
    this.init('popover', element, options)
  }

if (!$.fn.tooltip) throw new Error('Popover requires tooltip.js')

Popover.DEFAULTS = $.extend({}, $.fn.tooltip.Constructor.DEFAULTS, {
    placement: 'right',
    trigger: 'click',
    content: '',
    template: '<div class="popover"><div class="arrow"></div><h3 class="popover-title"></h3><div class="popover-content"></div></div>'
  })

// NOTE: POPOVER EXTENDS tooltip.js
  // ================================

Popover.prototype = $.extend({}, $.fn.tooltip.Constructor.prototype)

Popover.prototype.constructor = Popover

Popover.prototype.getDefaults = function () {
    return Popover.DEFAULTS
  }

Popover.prototype.setContent = function () {
    var $tip    = this.tip()
    var title   = this.getTitle()
    var content = this.getContent()

$tip.find('.popover-title')[this.options.html ? 'html' : 'text'](title)
    $tip.find('.popover-content')[ // we use append for html objects to maintain js events
      this.options.html ? (typeof content == 'string' ? 'html' : 'append') : 'text'
    ](content)

$tip.removeClass('fade top bottom left right in')

// IE8 doesn't accept hiding via the `:empty` pseudo selector, we have to do
    // this manually by checking the contents.
    if (!$tip.find('.popover-title').html()) $tip.find('.popover-title').hide()
  }

Popover.prototype.hasContent = function () {
    return this.getTitle() || this.getContent()
  }

Popover.prototype.getContent = function () {
    var $e = this.$element
    var o  = this.options

return $e.attr('data-content')
      || (typeof o.content == 'function' ?
            o.content.call($e[0]) :
            o.content)
  }

Popover.prototype.arrow = function () {
    return this.$arrow = this.$arrow || this.tip().find('.arrow')
  }

Popover.prototype.tip = function () {
    if (!this.$tip) this.$tip = $(this.options.template)
    return this.$tip
  }

// POPOVER PLUGIN DEFINITION
  // =========================

var old = $.fn.popover

$.fn.popover = function (option) {
    return this.each(function () {
      var $this   = $(this)
      var data    = $this.data('bs.popover')
      var options = typeof option == 'object' && option

if (!data && option == 'destroy') return
      if (!data) $this.data('bs.popover', (data = new Popover(this, options)))
      if (typeof option == 'string') data[option]()
    })
  }

$.fn.popover.Constructor = Popover

// POPOVER NO CONFLICT
  // ===================

$.fn.popover.noConflict = function () {
    $.fn.popover = old
    return this
  }

}(jQuery);

bootstrap.tooltip.js
#

/* ========================================================================
 * Bootstrap: tooltip.js v3.1.1
 * https://getbootstrap.com/javascript/#tooltip
 * Inspired by the original jQuery.tipsy by Jason Frame
 * ========================================================================
 * Copyright 2011-2014 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * ======================================================================== */

+function ($) {
  'use strict';

// TOOLTIP PUBLIC CLASS DEFINITION
  // ===============================

var Tooltip = function (element, options) {
    this.type       =
    this.options    =
    this.enabled    =
    this.timeout    =
    this.hoverState =
    this.$measure   = 
    this.$element   = null
    
    this.init('tooltip', element, options)
  }

Tooltip.DEFAULTS = {
    animation: true,
    mouseOffset: 0,
    measure: false,
    followMouse: false,
    placement: 'top',
    selector: false,
    template: '<div class="tooltip"><div class="tooltip-arrow"></div><div class="tooltip-inner"></div></div>',
    trigger: 'hover focus',
    title: '',
    delay: 0,
    html: false,
    container: false
  }

Tooltip.prototype.init = function (type, element, options) {
    this.enabled  = true
    this.type     = type
    this.$element = $(element)
    this.options  = this.getOptions(options)

if (this.options.measure) {
      this.$measure = $(this.options.measure)
    }

var triggers = this.options.trigger.split(' ')

for (var i = triggers.length; i--;) {
      var trigger = triggers[i]

if (trigger == 'click') {
        this.$element.on('click.' + this.type, this.options.selector, $.proxy(this.toggle, this))
      } else if (trigger != 'manual') {
        var eventIn  = trigger == 'hover' ? 'mouseenter' : 'focusin'
        var eventOut = trigger == 'hover' ? 'mouseleave' : 'focusout'

this.$element.on(eventIn  + '.' + this.type, this.options.selector, $.proxy(this.enter, this))
        this.$element.on(eventOut + '.' + this.type, this.options.selector, $.proxy(this.leave, this))
      }
    }

this.options.selector ?
      (this._options = $.extend({}, this.options, { trigger: 'manual', selector: '' })) :
      this.fixTitle()
  }

Tooltip.prototype.getDefaults = function () {
    return Tooltip.DEFAULTS
  }

Tooltip.prototype.getOptions = function (options) {
    options = $.extend({}, this.getDefaults(), this.$element.data(), options)

if (options.delay && typeof options.delay == 'number') {
      options.delay = {
        show: options.delay,
        hide: options.delay
      }
    }

return options
  }

Tooltip.prototype.getDelegateOptions = function () {
    var options  = {}
    var defaults = this.getDefaults()

this._options && $.each(this._options, function (key, value) {
      if (defaults[key] != value) options[key] = value
    })

return options
  }

Tooltip.prototype.enter = function (obj) {
    var self = obj instanceof this.constructor ?
      obj : $(obj.currentTarget)[this.type](this.getDelegateOptions()).data('bs.' + this.type)

clearTimeout(self.timeout)

self.hoverState = 'in'

if (!self.options.delay || !self.options.delay.show) return self.show()

self.timeout = setTimeout(function () {
      if (self.hoverState == 'in') self.show()
    }, self.options.delay.show)
  }

Tooltip.prototype.leave = function (obj) {
    var self = obj instanceof this.constructor ?
      obj : $(obj.currentTarget)[this.type](this.getDelegateOptions()).data('bs.' + this.type)

clearTimeout(self.timeout)

self.hoverState = 'out'

if (!self.options.delay || !self.options.delay.hide) return self.hide()

self.timeout = setTimeout(function () {
      if (self.hoverState == 'out') self.hide()
    }, self.options.delay.hide)
  }

Tooltip.prototype.show = function () {
    var e = $.Event('show.bs.' + this.type)

if (this.hasContent() && this.enabled) {
      this.$element.trigger(e)

if (e.isDefaultPrevented()) return
      var that = this;

var $tip = this.tip()

this.setContent()

if (this.options.animation) $tip.addClass('fade')

var placement = typeof this.options.placement == 'function' ?
        this.options.placement.call(this, $tip[0], this.$element[0]) :
        this.options.placement

var autoToken = /\s?auto?\s?/i
      var autoPlace = autoToken.test(placement)
      if (autoPlace) placement = placement.replace(autoToken, '') || 'top'

$tip
        .detach()
        .css({ top: 0, left: 0, display: 'block' })
        .addClass(placement)

this.options.container ? $tip.appendTo(this.options.container) : $tip.insertAfter(this.$element)

var pos          = this.getPosition()
      var actualWidth  = $tip[0].offsetWidth
      var actualHeight = $tip[0].offsetHeight

if (autoPlace) {
        placement = this.getAutoPlace($tip, placement, pos, actualWidth, actualHeight)
      }

var calculatedOffset = this.getCalculatedOffset(placement, pos, actualWidth, actualHeight)

this.applyPlacement(calculatedOffset, placement)
      this.hoverState = null

var complete = function() {
        that.$element.trigger('shown.bs.' + that.type)
      }

if (this.options.followMouse) {
        $(this.options.container).on('mousemove', $.proxy(this.follow, this));
      }

$.support.transition && this.$tip.hasClass('fade') ?
        $tip
          .one($.support.transition.end, complete)
          .emulateTransitionEnd(150) :
        complete()
    }
  }

Tooltip.prototype.getAutoPlace = function($tip, placement, pos, actualWidth, actualHeight) {

var $parent = this.$element.parent()

var orgPlacement = placement
    var docScroll    = document.documentElement.scrollTop || document.body.scrollTop
    var parentWidth  = this.options.container == 'body' ? window.innerWidth  : $parent.outerWidth()
    var parentHeight = this.options.container == 'body' ? window.innerHeight : $parent.outerHeight()
    var parentLeft   = this.options.container == 'body' ? 0 : $parent.offset().left

placement = placement == 'bottom' && pos.top   + pos.height  + actualHeight - docScroll > parentHeight  ? 'top'    :
                placement == 'top'    && pos.top   - docScroll   - actualHeight < 0                         ? 'bottom' :
                placement == 'right'  && pos.left  + actualWidth > parentWidth                              ? 'left'   :
                placement == 'left'   && pos.left  - actualWidth < parentLeft                               ? 'right'  :
                placement

$tip
      .removeClass(orgPlacement)
      .addClass(placement)

return placement
  }

Tooltip.prototype.follow = function(e) {
    
    var $tip = this.tip()

var pos          = this.getPosition()
    var actualWidth  = $tip[0].offsetWidth
    var actualHeight = $tip[0].offsetHeight

var placement = typeof this.options.placement == 'function' ?
        this.options.placement.call(this, $tip[0], this.$element[0]) :
        this.options.placement

var autoToken = /\s?auto?\s?/i
      var autoPlace = autoToken.test(placement)
      if (autoPlace) placement = placement.replace(autoToken, '') || 'top'

pos.left = e.pageX + this.options.mouseOffset;
    pos.top = e.pageY + this.options.mouseOffset;

var placement = this.getAutoPlace($tip, placement, pos, actualWidth, actualHeight)
    var calculatedOffset = this.getCalculatedOffset(placement, pos, actualWidth, actualHeight, e)

this.applyPlacement(calculatedOffset, placement)
  }

Tooltip.prototype.applyPlacement = function (offset, placement) {
    var replace
    var $tip   = this.tip()
    var width  = $tip[0].offsetWidth
    var height = $tip[0].offsetHeight

// manually read margins because getBoundingClientRect includes difference
    var marginTop = parseInt($tip.css('margin-top'), 10)
    var marginLeft = parseInt($tip.css('margin-left'), 10)

// we must check for NaN for ie 8/9
    if (isNaN(marginTop))  marginTop  = 0
    if (isNaN(marginLeft)) marginLeft = 0

offset.top  = offset.top  + marginTop
    offset.left = offset.left + marginLeft

// $.fn.offset doesn't round pixel values
    // so we use setOffset directly with our own function B-0
    $.offset.setOffset($tip[0], $.extend({
      using: function (props) {
        $tip.css({
          top: Math.round(props.top),
          left: Math.round(props.left)
        })
      }
    }, offset), 0)

$tip.addClass('in')

// check to see if placing tip in new offset caused the tip to resize itself
    var actualWidth  = $tip[0].offsetWidth
    var actualHeight = $tip[0].offsetHeight

if (placement == 'top' && actualHeight != height) {
      replace = true
      offset.top = offset.top + height - actualHeight
    }

if (/bottom|top/.test(placement)) {
      var delta = 0

if (offset.left < 0) {
        delta       = offset.left * -2
        offset.left = 0

$tip.offset(offset)

actualWidth  = $tip[0].offsetWidth
        actualHeight = $tip[0].offsetHeight
      }

this.replaceArrow(delta - width + actualWidth, actualWidth, 'left')
    } else {
      this.replaceArrow(actualHeight - height, actualHeight, 'top')
    }

if (replace) $tip.offset(offset)
  }

Tooltip.prototype.replaceArrow = function (delta, dimension, position) {

if(this.options.mouseOffset > 0 && position === 'top') {
      this.arrow().css(position, this.options.mouseOffset + 10 + 'px')
      return;
    }

this.arrow().css(position, delta ? (50 * (1 - delta / dimension) + '%') : '')
  }

Tooltip.prototype.setContent = function () {
    var $tip  = this.tip()
    var title = this.getTitle()

$tip.find('.tooltip-inner')[this.options.html ? 'html' : 'text'](title)
    $tip.removeClass('fade in top bottom left right')
  }

Tooltip.prototype.hide = function () {
    var that = this
    var $tip = this.tip()
    var e    = $.Event('hide.bs.' + this.type)

function complete() {
      if (that.hoverState != 'in') $tip.detach()
      that.$element.trigger('hidden.bs.' + that.type)
    }

$(this.options.container).off('mousemove');
    this.$element.trigger(e)

if (e.isDefaultPrevented()) return

$tip.removeClass('in')

$.support.transition && this.$tip.hasClass('fade') ?
      $tip
        .one($.support.transition.end, complete)
        .emulateTransitionEnd(150) :
      complete()

this.hoverState = null

return this
  }

Tooltip.prototype.fixTitle = function () {
    var $e = this.$element
    if ($e.attr('title') || typeof($e.attr('data-original-title')) != 'string') {
      $e.attr('data-original-title', $e.attr('title') || '').attr('title', '')
    }
  }

Tooltip.prototype.hasContent = function () {
    return this.getTitle()
  }

Tooltip.prototype.getPosition = function () {
    
    var el = this.$element[0]
    if(this.$element.prop('tagName') == 'AREA') {

var position = this.$element.attr('coords').split(',');
      var x = parseInt(position[0], 0) + parseInt(this.$measure.offset().left, 0);
      var y = parseInt(position[1], 0) + parseInt(this.$measure.offset().top, 0);

return {bottom: 0, height: el.offsetWidth, left: x, right: 0, top: y, width: el.offsetWidth}
    }

return $.extend({}, (typeof el.getBoundingClientRect == 'function') ? el.getBoundingClientRect() : {
      width: el.offsetWidth,
      height: el.offsetHeight
    }, this.$element.offset())
  }

Tooltip.prototype.getCalculatedOffset = function (placement, pos, actualWidth, actualHeight, follow) {
    
    if (typeof follow !== 'undefined') {

return  placement == 'bottom' ? { top: follow.pageY + this.options.mouseOffset, left: follow.pageX - (actualWidth / 2)  } :
              placement == 'top'    ? { top: follow.pageY - actualHeight - this.options.mouseOffset, left: follow.pageX - (actualWidth / 2)  } :
              placement == 'left'   ? { top: follow.pageY - this.options.mouseOffset, left: follow.pageX - (actualWidth + this.options.mouseOffset) } :
                                     { top: follow.pageY - this.options.mouseOffset, left: follow.pageX + this.options.mouseOffset }
    }

return placement == 'bottom' ? { top: pos.top + pos.height,   left: pos.left + pos.width / 2 - actualWidth / 2  } :
           placement == 'top'    ? { top: pos.top - actualHeight, left: pos.left + pos.width / 2 - actualWidth / 2  } :
           placement == 'left'   ? { top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left - actualWidth } :
                                   { top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left + pos.width   }
  }

Tooltip.prototype.getTitle = function () {
    var title
    var $e = this.$element
    var o  = this.options

title = $e.attr('data-original-title')
      || (typeof o.title == 'function' ? o.title.call($e[0]) :  o.title)

return title
  }

Tooltip.prototype.tip = function () {
    return this.$tip = this.$tip || $(this.options.template)
  }

Tooltip.prototype.arrow = function () {
    return this.$arrow = this.$arrow || this.tip().find('.tooltip-arrow')
  }

Tooltip.prototype.validate = function () {
    if (!this.$element[0].parentNode) {
      this.hide()
      this.$element = null
      this.options  = null
    }
  }

Tooltip.prototype.enable = function () {
    this.enabled = true
  }

Tooltip.prototype.disable = function () {
    this.enabled = false
  }

Tooltip.prototype.toggleEnabled = function () {
    this.enabled = !this.enabled
  }

Tooltip.prototype.toggle = function (e) {
    var self = e ? $(e.currentTarget)[this.type](this.getDelegateOptions()).data('bs.' + this.type) : this
    self.tip().hasClass('in') ? self.leave(self) : self.enter(self)
  }

Tooltip.prototype.destroy = function () {
    clearTimeout(this.timeout)
    this.hide().$element.off('.' + this.type).removeData('bs.' + this.type)
  }

// TOOLTIP PLUGIN DEFINITION
  // =========================

var old = $.fn.tooltip

$.fn.tooltip = function (option) {
    return this.each(function () {
      var $this   = $(this)
      var data    = $this.data('bs.tooltip')
      var options = typeof option == 'object' && option

if (!data && option == 'destroy') return
      if (!data) $this.data('bs.tooltip', (data = new Tooltip(this, options)))
      if (typeof option == 'string') data[option]()
    })
  }

$.fn.tooltip.Constructor = Tooltip

// TOOLTIP NO CONFLICT
  // ===================

$.fn.tooltip.noConflict = function () {
    $.fn.tooltip = old
    return this
  }

}(jQuery);

d3.layout.chord.sort.js
#

////////////////////////////////////////////////////////////
//////////// Custom Chord Layout Function //////////////////
/////// Places the Chords in the visually best order ///////
///////////////// to reduce overlap ////////////////////////
////////////////////////////////////////////////////////////
//////// Slightly adjusted by Nadieh Bremer ////////////////
//////////////// VisualCinnamon.com ////////////////////////
////////////////////////////////////////////////////////////
////// Original from the d3.layout.chord() function ////////
///////////////// from the d3.js library ///////////////////
//////////////// Created by Mike Bostock ///////////////////
////////////////////////////////////////////////////////////

customChordLayout = function() {
	var ε = 1e-6, ε2 = ε * ε, π = Math.PI, τ = 2 * π, τε = τ - ε, halfπ = π / 2, d3_radians = π / 180, d3_degrees = 180 / π;
    var chord = {}, chords, groups, matrix, n, padding = 0, sortGroups, sortSubgroups, sortChords;
    function relayout() {
		var subgroups = {}, groupSums = [], groupIndex = d3.range(n), subgroupIndex = [], k, x, x0, i, j;
		var numSeq;
		chords = [];
		groups = [];
		k = 0, i = -1;
		  
		while (++i < n) {
			x = 0, j = -1, numSeq = [];
			while (++j < n) {
			  x += matrix[i][j];
			}
			groupSums.push(x);
			//////////////////////////////////////
			////////////// New part //////////////
			//////////////////////////////////////
			for(var m = 0; m < n; m++) {	
				numSeq[m] = (n+(i-1)-m)%n;
			}
			subgroupIndex.push(numSeq);
			//////////////////////////////////////
			//////////  End new part /////////////
			//////////////////////////////////////
			k += x;
		  }//while
	  
		k = (τ - padding * n) / k;
		x = 0, i = -1;
		while (++i < n) {
			x0 = x, j = -1;
			while (++j < n) {
				var di = groupIndex[i], dj = subgroupIndex[di][j], v = matrix[di][dj], a0 = x, a1 = x += v * k;
				subgroups[di + "-" + dj] = {
					index: di,
					subindex: dj,
					startAngle: a0,
					endAngle: a1,
					value: v
				};
			}//while
			
			groups[di] = {
				index: di,
				startAngle: x0,
				endAngle: x,
				value: (x - x0) / k
			};
			x += padding;
		}//while

i = -1;
		while (++i < n) {
			j = i - 1;
			while (++j < n) {
				var source = subgroups[i + "-" + j], target = subgroups[j + "-" + i];
				if (source.value || target.value) {
					chords.push(source.value < target.value ? {
						source: target,
						target: source
					} : {
						source: source,
						target: target
					});
				}//if
			}//while
		}//while
      if (sortChords) resort();
    }//function relayout
	
    function resort() {
      chords.sort(function(a, b) {
        return sortChords((a.source.value + a.target.value) / 2, (b.source.value + b.target.value) / 2);
      });
    }
    chord.matrix = function(x) {
      if (!arguments.length) return matrix;
      n = (matrix = x) && matrix.length;
      chords = groups = null;
      return chord;
    };
    chord.padding = function(x) {
      if (!arguments.length) return padding;
      padding = x;
      chords = groups = null;
      return chord;
    };
    chord.sortGroups = function(x) {
      if (!arguments.length) return sortGroups;
      sortGroups = x;
      chords = groups = null;
      return chord;
    };
    chord.sortSubgroups = function(x) {
      if (!arguments.length) return sortSubgroups;
      sortSubgroups = x;
      chords = null;
      return chord;
    };
    chord.sortChords = function(x) {
      if (!arguments.length) return sortChords;
      sortChords = x;
      if (chords) resort();
      return chord;
    };
    chord.chords = function() {
      if (!chords) relayout();
      return chords;
    };
    chord.groups = function() {
      if (!groups) relayout();
      return groups;
    };
    return chord;
  };

script.js
#

////////////////////////////////////////////////////////////
//////////////////////// Set-Up ////////////////////////////
////////////////////////////////////////////////////////////

var margin = {left:20, top:20, right:20, bottom:20},
	width = Math.min(window.innerWidth, 700) - margin.left - margin.right,
    height = Math.min(window.innerWidth, 700) - margin.top - margin.bottom,
    innerRadius = Math.min(width, height) * .39,
    outerRadius = innerRadius * 1.1;
	
var Names = ["Black Widow","Captain America","Hawkeye","the Hulk","Iron Man","Thor"],
	colors = ["#301E1E", "#083E77", "#342350", "#567235", "#8B161C", "#DF7C00"],
	opacityDefault = 0.8;

var matrix = [
	[0,4,3,2,5,2], //Black Widow
	[4,0,3,2,4,3], //Captain America
	[3,3,0,2,3,3], //Hawkeye
	[2,2,2,0,3,3], //The Hulk
	[5,4,3,3,0,2], //Iron Man
	[2,3,3,3,2,0], //Thor
];

////////////////////////////////////////////////////////////
/////////// Create scale and layout functions //////////////
////////////////////////////////////////////////////////////

var colors = d3.scale.ordinal()
    .domain(d3.range(Names.length))
	.range(colors);

//A "custom" d3 chord function that automatically sorts the order of the chords in such a manner to reduce overlap	
var chord = customChordLayout()
    .padding(.15)
    .sortChords(d3.descending) //which chord should be shown on top when chords cross. Now the biggest chord is at the bottom
	.matrix(matrix);
		
var arc = d3.svg.arc()
    .innerRadius(innerRadius*1.01)
    .outerRadius(outerRadius);

var path = d3.svg.chord()
	.radius(innerRadius);
	
////////////////////////////////////////////////////////////
////////////////////// Create SVG //////////////////////////
////////////////////////////////////////////////////////////
	
var svg = d3.select("#chart").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
	.append("g")
    .attr("transform", "translate(" + (width/2 + margin.left) + "," + (height/2 + margin.top) + ")");

////////////////////////////////////////////////////////////
/////////////// Create the gradient fills //////////////////
////////////////////////////////////////////////////////////

//Function to create the id for each chord gradient
function getGradID(d){ return "linkGrad-" + d.source.index + "-" + d.target.index; }

//Create the gradients definitions for each chord
var grads = svg.append("defs").selectAll("linearGradient")
	.data(chord.chords())
   .enter().append("linearGradient")
	.attr("id", getGradID)
	.attr("gradientUnits", "userSpaceOnUse")
	.attr("x1", function(d,i) { return innerRadius * Math.cos((d.source.endAngle-d.source.startAngle)/2 + d.source.startAngle - Math.PI/2); })
	.attr("y1", function(d,i) { return innerRadius * Math.sin((d.source.endAngle-d.source.startAngle)/2 + d.source.startAngle - Math.PI/2); })
	.attr("x2", function(d,i) { return innerRadius * Math.cos((d.target.endAngle-d.target.startAngle)/2 + d.target.startAngle - Math.PI/2); })
	.attr("y2", function(d,i) { return innerRadius * Math.sin((d.target.endAngle-d.target.startAngle)/2 + d.target.startAngle - Math.PI/2); })

//Set the starting color (at 0%)
grads.append("stop")
	.attr("offset", "0%")
	.attr("stop-color", function(d){ return colors(d.source.index); });

//Set the ending color (at 100%)
grads.append("stop")
	.attr("offset", "100%")
	.attr("stop-color", function(d){ return colors(d.target.index); });
		
////////////////////////////////////////////////////////////
////////////////// Draw outer Arcs /////////////////////////
////////////////////////////////////////////////////////////

var outerArcs = svg.selectAll("g.group")
	.data(chord.groups)
	.enter().append("g")
	.attr("class", "group")
	.on("mouseover", fade(.1))
	.on("mouseout", fade(opacityDefault));

outerArcs.append("path")
	.style("fill", function(d) { return colors(d.index); })
	.attr("d", arc)
	.each(function(d,i) {
		//Search pattern for everything between the start and the first capital L
		var firstArcSection = /(^.+?)L/;

//Grab everything up to the first Line statement
		var newArc = firstArcSection.exec( d3.select(this).attr("d") )[1];
		//Replace all the comma's so that IE can handle it
		newArc = newArc.replace(/,/g , " ");
		
		//If the end angle lies beyond a quarter of a circle (90 degrees or pi/2) 
		//flip the end and start position
		if (d.endAngle > 90*Math.PI/180 & d.startAngle < 270*Math.PI/180) {
			var startLoc 	= /M(.*?)A/,		//Everything between the first capital M and first capital A
				middleLoc 	= /A(.*?)0 0 1/,	//Everything between the first capital A and 0 0 1
				endLoc 		= /0 0 1 (.*?)$/;	//Everything between the first 0 0 1 and the end of the string (denoted by $)
			//Flip the direction of the arc by switching the start en end point (and sweep flag)
			//of those elements that are below the horizontal line
			var newStart = endLoc.exec( newArc )[1];
			var newEnd = startLoc.exec( newArc )[1];
			var middleSec = middleLoc.exec( newArc )[1];
			
			//Build up the new arc notation, set the sweep-flag to 0
			newArc = "M" + newStart + "A" + middleSec + "0 0 0 " + newEnd;
		}//if
		
		//Create a new invisible arc that the text can flow along
		svg.append("path")
			.attr("class", "hiddenArcs")
			.attr("id", "arc"+i)
			.attr("d", newArc)
			.style("fill", "none");
	});

////////////////////////////////////////////////////////////
////////////////// Append Names ////////////////////////////
////////////////////////////////////////////////////////////

//Append the label names on the outside
outerArcs.append("text")
	.attr("class", "titles")
	.attr("dy", function(d,i) { return (d.endAngle > 90*Math.PI/180 & d.startAngle < 270*Math.PI/180 ? 25 : -16); })
   .append("textPath")
	.attr("startOffset","50%")
	.style("text-anchor","middle")
	.attr("xlink:href",function(d,i){return "#arc"+i;})
	.text(function(d,i){ return Names[i]; });
	
////////////////////////////////////////////////////////////
////////////////// Draw inner chords ///////////////////////
////////////////////////////////////////////////////////////
  
svg.selectAll("path.chord")
	.data(chord.chords)
	.enter().append("path")
	.attr("class", "chord")
	.style("fill", function(d){ return "url(#" + getGradID(d) + ")"; })
	.style("opacity", opacityDefault)
	.attr("d", path)
	.on("mouseover", mouseoverChord)
	.on("mouseout", mouseoutChord);

////////////////////////////////////////////////////////////
////////////////// Extra Functions /////////////////////////
////////////////////////////////////////////////////////////

//Returns an event handler for fading a given chord group.
function fade(opacity) {
  return function(d,i) {
    svg.selectAll("path.chord")
        .filter(function(d) { return d.source.index !== i && d.target.index !== i; })
		.transition()
        .style("opacity", opacity);
  };
}//fade

//Highlight hovered over chord
function mouseoverChord(d,i) {
  
	//Decrease opacity to all
	svg.selectAll("path.chord")
		.transition()
		.style("opacity", 0.1);
	//Show hovered over chord with full opacity
	d3.select(this)
		.transition()
        .style("opacity", 1);
  
	//Define and show the tooltip over the mouse location
	$(this).popover({
		placement: 'auto top',
		container: 'body',
		mouseOffset: 10,
		followMouse: true,
		trigger: 'hover',
		html : true,
		content: function() { 
			return "<p style='font-size: 11px; text-align: center;'><span style='font-weight:900'>" + Names[d.source.index] + 
				   "</span> and <span style='font-weight:900'>" + Names[d.target.index] + 
				   "</span> appeared together in <span style='font-weight:900'>" + d.source.value + "</span> projects </p>"; }
	});
	$(this).popover('show');
}//mouseoverChord

//Bring all chords back to default opacity
function mouseoutChord(d) {
	//Hide the tooltip
	$('.popover').each(function() {
		$(this).remove();
	}); 
	//Set opacity back to default for all
	svg.selectAll("path.chord")
		.transition()
		.style("opacity", opacityDefault);
}//function mouseoutChord

LICENSE
#
This block appears to have no license. Please contact the author to request a license.

Modified http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js to a secure url

https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js

https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js

https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/js/bootstrap.min.js