/*!
 * Chart.js
 * http://chartjs.org/
 * Version: 1.0.2
 *
 * Copyright 2015 Nick Downie
 * Released under the MIT license
 * https://github.com/nnnick/Chart.js/blob/master/LICENSE.md
 */


(function(){

	"use strict";

	//Declare root variable - window in the browser, global on the server
	var root = this,
		previous = root.Chart;

	//Occupy the global variable of Chart, and create a simple base class
	var Chart = function(context){
		var chart = this;
		this.canvas = context.canvas;

		this.ctx = context;

		//Variables global to the chart
		var computeDimension = function(element,dimension)
		{
			if (element['offset'+dimension])
			{
				return element['offset'+dimension];
			}
			else
			{
				return document.defaultView.getComputedStyle(element).getPropertyValue(dimension);
			}
		};

		var width = this.width = computeDimension(context.canvas,'Width') || context.canvas.width;
		var height = this.height = computeDimension(context.canvas,'Height') || context.canvas.height;

		// Firefox requires this to work correctly
		context.canvas.width  = width;
		context.canvas.height = height;

		width = this.width = context.canvas.width;
		height = this.height = context.canvas.height;
		this.aspectRatio = this.width / this.height;
		//High pixel density displays - multiply the size of the canvas height/width by the device pixel ratio, then scale.
		helpers.retinaScale(this);

		return this;
	};
	//Globally expose the defaults to allow for user updating/changing
	Chart.defaults = {
		global: {
			// Boolean - Whether to animate the chart
			animation: true,

			// Number - Number of animation steps
			animationDuration: 1000,

			// String - Animation easing effect
			animationEasing: "easeOutQuart",

			// Boolean - If we should show the scale at all
			showScale: true,

			// Boolean - If we want to override with a hard coded scale
			scaleOverride: false,

			// ** Required if scaleOverride is true **
			// Number - The number of steps in a hard coded scale
			scaleSteps: null,
			// Number - The value jump in the hard coded scale
			scaleStepWidth: null,
			// Number - The scale starting value
			scaleStartValue: null,

			// String - Colour of the scale line
			scaleLineColor: "rgba(0,0,0,.1)",

			// Number - Pixel width of the scale line
			scaleLineWidth: 1,

			// Boolean - Whether to show labels on the scale
			scaleShowLabels: true,

			// Interpolated JS string - can access value
			scaleLabel: "<%=value%>",

			// Boolean - Whether the scale should stick to integers, and not show any floats even if drawing space is there
			scaleIntegersOnly: true,

			// Boolean - Whether the scale should start at zero, or an order of magnitude down from the lowest value
			scaleBeginAtZero: false,

			// String - Scale label font declaration for the scale label
			scaleFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",

			// Number - Scale label font size in pixels
			scaleFontSize: 12,

			// String - Scale label font weight style
			scaleFontStyle: "normal",

			// String - Scale label font colour
			scaleFontColor: "#666",

			// Boolean - whether or not the chart should be responsive and resize when the browser does.
			responsive: false,

			// Boolean - whether to maintain the starting aspect ratio or not when responsive, if set to false, will take up entire container
			maintainAspectRatio: true,

			// Boolean - Determines whether to draw tooltips on the canvas or not - attaches events to touchmove & mousemove
			showTooltips: true,

			// Boolean - Determines whether to draw built-in tooltip or call custom tooltip function
			customTooltips: false,

			// Array - Array of string names to attach tooltip events
			tooltipEvents: ["mousemove", "touchstart", "touchmove", "mouseout"],

			// String - Tooltip background colour
			tooltipBackgroundColor: "rgba(0,0,0,0.8)",

			// String - Tooltip label font declaration for the scale label
			tooltipFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",

			// Number - Tooltip label font size in pixels
			tooltipFontSize: 14,

			// String - Tooltip font weight style
			tooltipFontStyle: "normal",

			// String - Tooltip label font colour
			tooltipFontColor: "#fff",

			// String - Tooltip title font declaration for the scale label
			tooltipTitleFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",

			// Number - Tooltip title font size in pixels
			tooltipTitleFontSize: 14,

			// String - Tooltip title font weight style
			tooltipTitleFontStyle: "bold",

			// String - Tooltip title font colour
			tooltipTitleFontColor: "#fff",

			// Number - pixel width of padding around tooltip text
			tooltipYPadding: 6,

			// Number - pixel width of padding around tooltip text
			tooltipXPadding: 6,

			// Number - Size of the caret on the tooltip
			tooltipCaretSize: 8,

			// Number - Pixel radius of the tooltip border
			tooltipCornerRadius: 6,

			// Number - Pixel offset from point x to tooltip edge
			tooltipXOffset: 10,

			// String - Template string for single tooltips
			tooltipTemplate: "<%if (label){%><%=label%>: <%}%><%= value %>",

			// String - Template string for single tooltips
			multiTooltipTemplate: "<%if (datasetLabel){%><%=datasetLabel%>: <%}%><%= value %>",

			// String - Colour behind the legend colour block
			multiTooltipKeyBackground: '#fff',

			// Function - Will fire on animation progression.
			onAnimationProgress: function(){},

			// Function - Will fire on animation completion.
			onAnimationComplete: function(){}

		}
	};

	//Create a dictionary of chart types, to allow for extension of existing types
	Chart.types = {};

	//Global Chart helpers object for utility methods and classes
	var helpers = Chart.helpers = {};

		//-- Basic js utility methods
	var each = helpers.each = function(loopable,callback,self){
			var additionalArgs = Array.prototype.slice.call(arguments, 3);
			// Check to see if null or undefined firstly.
			if (loopable){
				if (loopable.length === +loopable.length){
					var i;
					for (i=0; i<loopable.length; i++){
						callback.apply(self,[loopable[i], i].concat(additionalArgs));
					}
				}
				else{
					for (var item in loopable){
						callback.apply(self,[loopable[item],item].concat(additionalArgs));
					}
				}
			}
		},
		clone = helpers.clone = function(obj){
			var objClone = {};
			each(obj,function(value,key){
				if (obj.hasOwnProperty(key)){
					objClone[key] = value;
				}
			});
			return objClone;
		},
		extend = helpers.extend = function(base){
			each(Array.prototype.slice.call(arguments,1), function(extensionObject) {
				each(extensionObject,function(value,key){
					if (extensionObject.hasOwnProperty(key)){
						base[key] = value;
					}
				});
			});
			return base;
		},
		merge = helpers.merge = function(base,master){
			//Merge properties in left object over to a shallow clone of object right.
			var args = Array.prototype.slice.call(arguments,0);
			args.unshift({});
			return extend.apply(null, args);
		},
		indexOf = helpers.indexOf = function(arrayToSearch, item){
			if (Array.prototype.indexOf) {
				return arrayToSearch.indexOf(item);
			}
			else{
				for (var i = 0; i < arrayToSearch.length; i++) {
					if (arrayToSearch[i] === item) return i;
				}
				return -1;
			}
		},
		where = helpers.where = function(collection, filterCallback){
			var filtered = [];

			helpers.each(collection, function(item){
				if (filterCallback(item)){
					filtered.push(item);
				}
			});

			return filtered;
		},
		findNextWhere = helpers.findNextWhere = function(arrayToSearch, filterCallback, startIndex){
			// Default to start of the array
			if (!startIndex){
				startIndex = -1;
			}
			for (var i = startIndex + 1; i < arrayToSearch.length; i++) {
				var currentItem = arrayToSearch[i];
				if (filterCallback(currentItem)){
					return currentItem;
				}
			}
		},
		findPreviousWhere = helpers.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex){
			// Default to end of the array
			if (!startIndex){
				startIndex = arrayToSearch.length;
			}
			for (var i = startIndex - 1; i >= 0; i--) {
				var currentItem = arrayToSearch[i];
				if (filterCallback(currentItem)){
					return currentItem;
				}
			}
		},
		inherits = helpers.inherits = function(extensions){
			//Basic javascript inheritance based on the model created in Backbone.js
			var parent = this;
			var ChartElement = (extensions && extensions.hasOwnProperty("constructor")) ? extensions.constructor : function(){ return parent.apply(this, arguments); };

			var Surrogate = function(){ this.constructor = ChartElement;};
			Surrogate.prototype = parent.prototype;
			ChartElement.prototype = new Surrogate();

			ChartElement.extend = inherits;

			if (extensions) extend(ChartElement.prototype, extensions);

			ChartElement.__super__ = parent.prototype;

			return ChartElement;
		},
		noop = helpers.noop = function(){},
		uid = helpers.uid = (function(){
			var id=0;
			return function(){
				return "chart-" + id++;
			};
		})(),
		warn = helpers.warn = function(str){
			//Method for warning of errors
			if (window.console && typeof window.console.warn === "function") console.warn(str);
		},
		amd = helpers.amd = (typeof define === 'function' && define.amd),
		//-- Math methods
		isNumber = helpers.isNumber = function(n){
			return !isNaN(parseFloat(n)) && isFinite(n);
		},
		max = helpers.max = function(array){
			return Math.max.apply( Math, array );
		},
		min = helpers.min = function(array){
			return Math.min.apply( Math, array );
		},
		cap = helpers.cap = function(valueToCap,maxValue,minValue){
			if(isNumber(maxValue)) {
				if( valueToCap > maxValue ) {
					return maxValue;
				}
			}
			else if(isNumber(minValue)){
				if ( valueToCap < minValue ){
					return minValue;
				}
			}
			return valueToCap;
		},
		getDecimalPlaces = helpers.getDecimalPlaces = function(num){
			if (num%1!==0 && isNumber(num)){
				var s = num.toString();
				if(s.indexOf("e-") < 0){
					// no exponent, e.g. 0.01
					return s.split(".")[1].length;
				}
				else if(s.indexOf(".") < 0) {
					// no decimal point, e.g. 1e-9
					return parseInt(s.split("e-")[1]);
				}
				else {
					// exponent and decimal point, e.g. 1.23e-9
					var parts = s.split(".")[1].split("e-");
					return parts[0].length + parseInt(parts[1]);
				}
			}
			else {
				return 0;
			}
		},
		toRadians = helpers.radians = function(degrees){
			return degrees * (Math.PI/180);
		},
		// Gets the angle from vertical upright to the point about a centre.
		getAngleFromPoint = helpers.getAngleFromPoint = function(centrePoint, anglePoint){
			var distanceFromXCenter = anglePoint.x - centrePoint.x,
				distanceFromYCenter = anglePoint.y - centrePoint.y,
				radialDistanceFromCenter = Math.sqrt( distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter);


			var angle = Math.PI * 2 + Math.atan2(distanceFromYCenter, distanceFromXCenter);

			//If the segment is in the top left quadrant, we need to add another rotation to the angle
			if (distanceFromXCenter < 0 && distanceFromYCenter < 0){
				angle += Math.PI*2;
			}

			return {
				angle: angle,
				distance: radialDistanceFromCenter
			};
		},
		aliasPixel = helpers.aliasPixel = function(pixelWidth){
			return (pixelWidth % 2 === 0) ? 0 : 0.5;
		},
		splineCurve = helpers.splineCurve = function(FirstPoint,MiddlePoint,AfterPoint,t){
			//Props to Rob Spencer at scaled innovation for his post on splining between points
			//http://scaledinnovation.com/analytics/splines/aboutSplines.html
			var d01=Math.sqrt(Math.pow(MiddlePoint.x-FirstPoint.x,2)+Math.pow(MiddlePoint.y-FirstPoint.y,2)),
				d12=Math.sqrt(Math.pow(AfterPoint.x-MiddlePoint.x,2)+Math.pow(AfterPoint.y-MiddlePoint.y,2)),
				fa=t*d01/(d01+d12),// scaling factor for triangle Ta
				fb=t*d12/(d01+d12);
			return {
				inner : {
					x : MiddlePoint.x-fa*(AfterPoint.x-FirstPoint.x),
					y : MiddlePoint.y-fa*(AfterPoint.y-FirstPoint.y)
				},
				outer : {
					x: MiddlePoint.x+fb*(AfterPoint.x-FirstPoint.x),
					y : MiddlePoint.y+fb*(AfterPoint.y-FirstPoint.y)
				}
			};
		},
		calculateOrderOfMagnitude = helpers.calculateOrderOfMagnitude = function(val){
			return Math.floor(Math.log(val) / Math.LN10);
		},
		calculateScaleRange = helpers.calculateScaleRange = function(valuesArray, drawingSize, textSize, startFromZero, integersOnly){

			//Set a minimum step of two - a point at the top of the graph, and a point at the base
			var minSteps = 2,
				maxSteps = Math.floor(drawingSize/(textSize * 1.5)),
				skipFitting = (minSteps >= maxSteps);

			var maxValue = max(valuesArray),
				minValue = min(valuesArray);

			// We need some degree of seperation here to calculate the scales if all the values are the same
			// Adding/minusing 0.5 will give us a range of 1.
			if (maxValue === minValue){
				maxValue += 0.5;
				// So we don't end up with a graph with a negative start value if we've said always start from zero
				if (minValue >= 0.5 && !startFromZero){
					minValue -= 0.5;
				}
				else{
					// Make up a whole number above the values
					maxValue += 0.5;
				}
			}

			var	valueRange = Math.abs(maxValue - minValue),
				rangeOrderOfMagnitude = calculateOrderOfMagnitude(valueRange),
				graphMax = Math.ceil(maxValue / (1 * Math.pow(10, rangeOrderOfMagnitude))) * Math.pow(10, rangeOrderOfMagnitude),
				graphMin = (startFromZero) ? 0 : Math.floor(minValue / (1 * Math.pow(10, rangeOrderOfMagnitude))) * Math.pow(10, rangeOrderOfMagnitude),
				graphRange = graphMax - graphMin,
				stepValue = Math.pow(10, rangeOrderOfMagnitude),
				numberOfSteps = Math.round(graphRange / stepValue);

			//If we have more space on the graph we'll use it to give more definition to the data
			while((numberOfSteps > maxSteps || (numberOfSteps * 2) < maxSteps) && !skipFitting) {
				if(numberOfSteps > maxSteps){
					stepValue *=2;
					numberOfSteps = Math.round(graphRange/stepValue);
					// Don't ever deal with a decimal number of steps - cancel fitting and just use the minimum number of steps.
					if (numberOfSteps % 1 !== 0){
						skipFitting = true;
					}
				}
				//We can fit in double the amount of scale points on the scale
				else{
					//If user has declared ints only, and the step value isn't a decimal
					if (integersOnly && rangeOrderOfMagnitude >= 0){
						//If the user has said integers only, we need to check that making the scale more granular wouldn't make it a float
						if(stepValue/2 % 1 === 0){
							stepValue /=2;
							numberOfSteps = Math.round(graphRange/stepValue);
						}
						//If it would make it a float break out of the loop
						else{
							break;
						}
					}
					//If the scale doesn't have to be an int, make the scale more granular anyway.
					else{
						stepValue /=2;
						numberOfSteps = Math.round(graphRange/stepValue);
					}

				}
			}

			if (skipFitting){
				numberOfSteps = minSteps;
				stepValue = graphRange / numberOfSteps;
			}
			return {
				steps : numberOfSteps,
				stepValue : stepValue,
				min : graphMin,
				max	: graphMin + (numberOfSteps * stepValue)
			};

		},
		/* jshint ignore:start */
		// Blows up jshint errors based on the new Function constructor
		//Templating methods
		//Javascript micro templating by John Resig - source at http://ejohn.org/blog/javascript-micro-templating/
		template = helpers.template = function(templateString, valuesObject){

			// If templateString is function rather than string-template - call the function for valuesObject

			if(templateString instanceof Function){
			 	return templateString(valuesObject);
		 	}

			var cache = {};
			function tmpl(str, data){
				// Figure out if we're getting a template, or if we need to
				// load the template - and be sure to cache the result.
				var fn = !/\W/.test(str) ?
				cache[str] = cache[str] :

				// Generate a reusable function that will serve as a template
				// generator (and which will be cached).
				new Function("obj",
					"var p=[],print=function(){p.push.apply(p,arguments);};" +

					// Introduce the data as local variables using with(){}
					"with(obj){p.push('" +

					// Convert the template into pure JavaScript
					str
						.replace(/[\r\t\n]/g, " ")
						.split("<%").join("\t")
						.replace(/((^|%>)[^\t]*)'/g, "$1\r")
						.replace(/\t=(.*?)%>/g, "',$1,'")
						.split("\t").join("');")
						.split("%>").join("p.push('")
						.split("\r").join("\\'") +
					"');}return p.join('');"
				);

				// Provide some basic currying to the user
				return data ? fn( data ) : fn;
			}
			return tmpl(templateString,valuesObject);
		},
		/* jshint ignore:end */
		generateLabels = helpers.generateLabels = function(templateString,numberOfSteps,graphMin,stepValue){
			var labelsArray = new Array(numberOfSteps);
			if (templateString){
				each(labelsArray,function(val,index){
					labelsArray[index] = template(templateString,{value: (graphMin + (stepValue*(index+1)))});
				});
			}
			return labelsArray;
		},
		//--Animation methods
		//Easing functions adapted from Robert Penner's easing equations
		//http://www.robertpenner.com/easing/
		easingEffects = helpers.easingEffects = {
			linear: function (t) {
				return t;
			},
			easeInQuad: function (t) {
				return t * t;
			},
			easeOutQuad: function (t) {
				return -1 * t * (t - 2);
			},
			easeInOutQuad: function (t) {
				if ((t /= 1 / 2) < 1){
					return 1 / 2 * t * t;
				}
				return -1 / 2 * ((--t) * (t - 2) - 1);
			},
			easeInCubic: function (t) {
				return t * t * t;
			},
			easeOutCubic: function (t) {
				return 1 * ((t = t / 1 - 1) * t * t + 1);
			},
			easeInOutCubic: function (t) {
				if ((t /= 1 / 2) < 1){
					return 1 / 2 * t * t * t;
				}
				return 1 / 2 * ((t -= 2) * t * t + 2);
			},
			easeInQuart: function (t) {
				return t * t * t * t;
			},
			easeOutQuart: function (t) {
				return -1 * ((t = t / 1 - 1) * t * t * t - 1);
			},
			easeInOutQuart: function (t) {
				if ((t /= 1 / 2) < 1){
					return 1 / 2 * t * t * t * t;
				}
				return -1 / 2 * ((t -= 2) * t * t * t - 2);
			},
			easeInQuint: function (t) {
				return 1 * (t /= 1) * t * t * t * t;
			},
			easeOutQuint: function (t) {
				return 1 * ((t = t / 1 - 1) * t * t * t * t + 1);
			},
			easeInOutQuint: function (t) {
				if ((t /= 1 / 2) < 1){
					return 1 / 2 * t * t * t * t * t;
				}
				return 1 / 2 * ((t -= 2) * t * t * t * t + 2);
			},
			easeInSine: function (t) {
				return -1 * Math.cos(t / 1 * (Math.PI / 2)) + 1;
			},
			easeOutSine: function (t) {
				return 1 * Math.sin(t / 1 * (Math.PI / 2));
			},
			easeInOutSine: function (t) {
				return -1 / 2 * (Math.cos(Math.PI * t / 1) - 1);
			},
			easeInExpo: function (t) {
				return (t === 0) ? 1 : 1 * Math.pow(2, 10 * (t / 1 - 1));
			},
			easeOutExpo: function (t) {
				return (t === 1) ? 1 : 1 * (-Math.pow(2, -10 * t / 1) + 1);
			},
			easeInOutExpo: function (t) {
				if (t === 0){
					return 0;
				}
				if (t === 1){
					return 1;
				}
				if ((t /= 1 / 2) < 1){
					return 1 / 2 * Math.pow(2, 10 * (t - 1));
				}
				return 1 / 2 * (-Math.pow(2, -10 * --t) + 2);
			},
			easeInCirc: function (t) {
				if (t >= 1){
					return t;
				}
				return -1 * (Math.sqrt(1 - (t /= 1) * t) - 1);
			},
			easeOutCirc: function (t) {
				return 1 * Math.sqrt(1 - (t = t / 1 - 1) * t);
			},
			easeInOutCirc: function (t) {
				if ((t /= 1 / 2) < 1){
					return -1 / 2 * (Math.sqrt(1 - t * t) - 1);
				}
				return 1 / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1);
			},
			easeInElastic: function (t) {
				var s = 1.70158;
				var p = 0;
				var a = 1;
				if (t === 0){
					return 0;
				}
				if ((t /= 1) == 1){
					return 1;
				}
				if (!p){
					p = 1 * 0.3;
				}
				if (a < Math.abs(1)) {
					a = 1;
					s = p / 4;
				} else{
					s = p / (2 * Math.PI) * Math.asin(1 / a);
				}
				return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p));
			},
			easeOutElastic: function (t) {
				var s = 1.70158;
				var p = 0;
				var a = 1;
				if (t === 0){
					return 0;
				}
				if ((t /= 1) == 1){
					return 1;
				}
				if (!p){
					p = 1 * 0.3;
				}
				if (a < Math.abs(1)) {
					a = 1;
					s = p / 4;
				} else{
					s = p / (2 * Math.PI) * Math.asin(1 / a);
				}
				return a * Math.pow(2, -10 * t) * Math.sin((t * 1 - s) * (2 * Math.PI) / p) + 1;
			},
			easeInOutElastic: function (t) {
				var s = 1.70158;
				var p = 0;
				var a = 1;
				if (t === 0){
					return 0;
				}
				if ((t /= 1 / 2) == 2){
					return 1;
				}
				if (!p){
					p = 1 * (0.3 * 1.5);
				}
				if (a < Math.abs(1)) {
					a = 1;
					s = p / 4;
				} else {
					s = p / (2 * Math.PI) * Math.asin(1 / a);
				}
				if (t < 1){
					return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p));}
				return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p) * 0.5 + 1;
			},
			easeInBack: function (t) {
				var s = 1.70158;
				return 1 * (t /= 1) * t * ((s + 1) * t - s);
			},
			easeOutBack: function (t) {
				var s = 1.70158;
				return 1 * ((t = t / 1 - 1) * t * ((s + 1) * t + s) + 1);
			},
			easeInOutBack: function (t) {
				var s = 1.70158;
				if ((t /= 1 / 2) < 1){
					return 1 / 2 * (t * t * (((s *= (1.525)) + 1) * t - s));
				}
				return 1 / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2);
			},
			easeInBounce: function (t) {
				return 1 - easingEffects.easeOutBounce(1 - t);
			},
			easeOutBounce: function (t) {
				if ((t /= 1) < (1 / 2.75)) {
					return 1 * (7.5625 * t * t);
				} else if (t < (2 / 2.75)) {
					return 1 * (7.5625 * (t -= (1.5 / 2.75)) * t + 0.75);
				} else if (t < (2.5 / 2.75)) {
					return 1 * (7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375);
				} else {
					return 1 * (7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375);
				}
			},
			easeInOutBounce: function (t) {
				if (t < 1 / 2){
					return easingEffects.easeInBounce(t * 2) * 0.5;
				}
				return easingEffects.easeOutBounce(t * 2 - 1) * 0.5 + 1 * 0.5;
			}
		},
		//Request animation polyfill - http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/
		requestAnimFrame = helpers.requestAnimFrame = (function(){
			return window.requestAnimationFrame ||
				window.webkitRequestAnimationFrame ||
				window.mozRequestAnimationFrame ||
				window.oRequestAnimationFrame ||
				window.msRequestAnimationFrame ||
				function(callback) {
					return window.setTimeout(callback, 1000 / 60);
				};
		})(),
		cancelAnimFrame = helpers.cancelAnimFrame = (function(){
			return window.cancelAnimationFrame ||
				window.webkitCancelAnimationFrame ||
				window.mozCancelAnimationFrame ||
				window.oCancelAnimationFrame ||
				window.msCancelAnimationFrame ||
				function(callback) {
					return window.clearTimeout(callback, 1000 / 60);
				};
		})(),
		animationLoop = helpers.animationLoop = function(callback,totalSteps,easingString,onProgress,onComplete,chartInstance){

			var currentStep = 0,
				easingFunction = easingEffects[easingString] || easingEffects.linear;

			var animationFrame = function(){
				currentStep++;
				var stepDecimal = currentStep/totalSteps;
				var easeDecimal = easingFunction(stepDecimal);

				callback.call(chartInstance,easeDecimal,stepDecimal, currentStep);
				onProgress.call(chartInstance,easeDecimal,stepDecimal);
				if (currentStep < totalSteps){
					chartInstance.animationFrame = requestAnimFrame(animationFrame);
				} else{
					onComplete.apply(chartInstance);
				}
			};
			requestAnimFrame(animationFrame);
		},
		//-- DOM methods
		getRelativePosition = helpers.getRelativePosition = function(evt){
			var mouseX, mouseY;
			var e = evt.originalEvent || evt,
				canvas = evt.currentTarget || evt.srcElement,
				boundingRect = canvas.getBoundingClientRect();

			if (e.touches){
				mouseX = e.touches[0].clientX - boundingRect.left;
				mouseY = e.touches[0].clientY - boundingRect.top;

			}
			else{
				mouseX = e.clientX - boundingRect.left;
				mouseY = e.clientY - boundingRect.top;
			}

			return {
				x : mouseX,
				y : mouseY
			};

		},
		addEvent = helpers.addEvent = function(node,eventType,method){
			if (node.addEventListener){
				node.addEventListener(eventType,method);
			} else if (node.attachEvent){
				node.attachEvent("on"+eventType, method);
			} else {
				node["on"+eventType] = method;
			}
		},
		removeEvent = helpers.removeEvent = function(node, eventType, handler){
			if (node.removeEventListener){
				node.removeEventListener(eventType, handler, false);
			} else if (node.detachEvent){
				node.detachEvent("on"+eventType,handler);
			} else{
				node["on" + eventType] = noop;
			}
		},
		bindEvents = helpers.bindEvents = function(chartInstance, arrayOfEvents, handler){
			// Create the events object if it's not already present
			if (!chartInstance.events) chartInstance.events = {};

			each(arrayOfEvents,function(eventName){
				chartInstance.events[eventName] = function(){
					handler.apply(chartInstance, arguments);
				};
				addEvent(chartInstance.chart.canvas,eventName,chartInstance.events[eventName]);
			});
		},
		unbindEvents = helpers.unbindEvents = function (chartInstance, arrayOfEvents) {
			each(arrayOfEvents, function(handler,eventName){
				removeEvent(chartInstance.chart.canvas, eventName, handler);
			});
		},
		getMaximumWidth = helpers.getMaximumWidth = function(domNode){
			var container = domNode.parentNode,
			    padding = parseInt(getStyle(container, 'padding-left')) + parseInt(getStyle(container, 'padding-right'));
			// TODO = check cross browser stuff with this.
			return container.clientWidth - padding;
		},
		getMaximumHeight = helpers.getMaximumHeight = function(domNode){
			var container = domNode.parentNode,
			    padding = parseInt(getStyle(container, 'padding-bottom')) + parseInt(getStyle(container, 'padding-top'));
			// TODO = check cross browser stuff with this.
			return container.clientHeight - padding;
		},
		getStyle = helpers.getStyle = function (el, property) {
			return el.currentStyle ?
				el.currentStyle[property] :
				document.defaultView.getComputedStyle(el, null).getPropertyValue(property);
		},
		getMaximumSize = helpers.getMaximumSize = helpers.getMaximumWidth, // legacy support
		retinaScale = helpers.retinaScale = function(chart){
			var ctx = chart.ctx,
				width = chart.canvas.width,
				height = chart.canvas.height;

			if (window.devicePixelRatio) {
				ctx.canvas.style.width = width + "px";
				ctx.canvas.style.height = height + "px";
				ctx.canvas.height = height * window.devicePixelRatio;
				ctx.canvas.width = width * window.devicePixelRatio;
				ctx.scale(window.devicePixelRatio, window.devicePixelRatio);
			}
		},
		//-- Canvas methods
		clear = helpers.clear = function(chart){
			chart.ctx.clearRect(0,0,chart.width,chart.height);
		},
		fontString = helpers.fontString = function(pixelSize,fontStyle,fontFamily){
			return fontStyle + " " + pixelSize+"px " + fontFamily;
		},
		longestText = helpers.longestText = function(ctx,font,arrayOfStrings){
			ctx.font = font;
			var longest = 0;
			each(arrayOfStrings,function(string){
				var textWidth = ctx.measureText(string).width;
				longest = (textWidth > longest) ? textWidth : longest;
			});
			return longest;
		},
		drawRoundedRectangle = helpers.drawRoundedRectangle = function(ctx,x,y,width,height,radius){
			ctx.beginPath();
			ctx.moveTo(x + radius, y);
			ctx.lineTo(x + width - radius, y);
			ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
			ctx.lineTo(x + width, y + height - radius);
			ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
			ctx.lineTo(x + radius, y + height);
			ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
			ctx.lineTo(x, y + radius);
			ctx.quadraticCurveTo(x, y, x + radius, y);
			ctx.closePath();
		},
		color = helpers.color = function(color){
			if(!window.Color){
				console.log('Color.js not found!');
				return color;
			}
			return window.Color(color);
		},
		isArray = helpers.isArray = function(obj){
			if (!Array.isArray) {
				return Object.prototype.toString.call(arg) === '[object Array]';
			}
			return Array.isArray(obj);
		};

	//Store a reference to each instance - allowing us to globally resize chart instances on window resize.
	//Destroy method on the chart will remove the instance of the chart from this reference.
	Chart.instances = {};

	Chart.Type = function(data,options,chart){
		this.options = options;
		this.chart = chart;
		this.id = uid();
		//Add the chart instance to the global namespace
		Chart.instances[this.id] = this;

		// Initialize is always called when a chart type is created
		// By default it is a no op, but it should be extended
		if (options.responsive){
			this.resize();
		}
		this.initialize.call(this,data);
	};

	//Core methods that'll be a part of every chart type
	extend(Chart.Type.prototype,{
		initialize : function(){return this;},
		clear : function(){
			clear(this.chart);
			return this;
		},
		stop : function(){
			// Stops any current animation loop occuring
			Chart.animationService.cancelAnimation(this);
			return this;
		},
		resize : function(callback){
			this.stop();
			var canvas = this.chart.canvas,
				newWidth = getMaximumWidth(this.chart.canvas),
				newHeight = this.options.maintainAspectRatio ? newWidth / this.chart.aspectRatio : getMaximumHeight(this.chart.canvas);

			canvas.width = this.chart.width = newWidth;
			canvas.height = this.chart.height = newHeight;

			retinaScale(this.chart);

			if (typeof callback === "function"){
				callback.apply(this, Array.prototype.slice.call(arguments, 1));
			}
			return this;
		},
		reflow : noop,
		render : function(reflow, customDuration){
			if (reflow){
				this.reflow();
			}
			
			if (this.options.animation && !reflow){
				var animation = new Chart.Animation();
				animation.numSteps = (customDuration || this.options.animationDuration) / 16.66; //60 fps
				animation.easing = this.options.animationEasing;
				
				// render function
				animation.render = function(chartInstance, animationObject) {
					var easingFunction = helpers.easingEffects[animationObject.easing];
					var stepDecimal = animationObject.currentStep / animationObject.numSteps;
					var easeDecimal = easingFunction(stepDecimal);
					
					chartInstance.draw(easeDecimal, stepDecimal, animationObject.currentStep);
				};
				
				// user events
				animation.onAnimationProgress = this.options.onAnimationProgress;
				animation.onAnimationComplete = this.options.onAnimationComplete;
				
				Chart.animationService.addAnimation(this, animation, customDuration);
			}
			else{
				this.draw();
				this.options.onAnimationComplete.call(this);
			}
			return this;
		},
		generateLegend : function(){
			return template(this.options.legendTemplate,this);
		},
		destroy : function(){
			this.clear();
			unbindEvents(this, this.events);
			var canvas = this.chart.canvas;

			// Reset canvas height/width attributes starts a fresh with the canvas context
			canvas.width = this.chart.width;
			canvas.height = this.chart.height;

			// < IE9 doesn't support removeProperty
			if (canvas.style.removeProperty) {
				canvas.style.removeProperty('width');
				canvas.style.removeProperty('height');
			} else {
				canvas.style.removeAttribute('width');
				canvas.style.removeAttribute('height');
			}

			delete Chart.instances[this.id];
		},
		toBase64Image : function(){
			return this.chart.canvas.toDataURL.apply(this.chart.canvas, arguments);
		}
	});

	Chart.Type.extend = function(extensions){

		var parent = this;

		var ChartType = function(){
			return parent.apply(this,arguments);
		};

		//Copy the prototype object of the this class
		ChartType.prototype = clone(parent.prototype);
		//Now overwrite some of the properties in the base class with the new extensions
		extend(ChartType.prototype, extensions);

		ChartType.extend = Chart.Type.extend;

		if (extensions.name || parent.prototype.name){

			var chartName = extensions.name || parent.prototype.name;
			//Assign any potential default values of the new chart type

			//If none are defined, we'll use a clone of the chart type this is being extended from.
			//I.e. if we extend a line chart, we'll use the defaults from the line chart if our new chart
			//doesn't define some defaults of their own.

			var baseDefaults = (Chart.defaults[parent.prototype.name]) ? clone(Chart.defaults[parent.prototype.name]) : {};

			Chart.defaults[chartName] = extend(baseDefaults,extensions.defaults);

			Chart.types[chartName] = ChartType;

			//Register this new chart type in the Chart prototype
			Chart.prototype[chartName] = function(data,options){
				var config = merge(Chart.defaults.global, Chart.defaults[chartName], options || {});
				return new ChartType(data,config,this);
			};
		} else{
			warn("Name not provided for this chart, so it hasn't been registered");
		}
		return parent;
	};

	Chart.Element = function(configuration){
		extend(this,{
			_vm: {},
		});
		extend(this,configuration);
		this.initialize.apply(this,arguments);
	};
	extend(Chart.Element.prototype,{
		initialize : function(){},
		save: function(){
			this._vm = clone(this);
			delete this._vm._vm;
			delete this._vm._start;
			return this;
		},
		pivot: function(){
			if(this._start){
				this._start = clone(this);
				helpers.extend(this._start, this._vm);
			}
			return this;
		},
		transition : function(ease){
			if(!this._start){
				this._start = clone(this._vm);
			}

			each(this,function(value, key){

				// Only non-vm properties
				if(key[0] === '_' || !this.hasOwnProperty(key)){
					return;
				}

				// Init if doesn't exist
				if(!this._vm[key]){
					this._vm[key] = value || null;
					return;
				}

				// No unnecessary computations
				if(this[key] === this._vm[key]){
					return;
				}
				
				// Color transitions if possible
				if(typeof value === 'string'){
					try{	
						var color = helpers.color(this._start[key]).mix(helpers.color(this[key]), ease);
						this._vm[key] = color.rgbString();
					} catch(err){
						this._vm[key] = value;
					}
				}
				// Number transitions
				else if(typeof value === 'number'){	
					this._vm[key] = ((this[key] - this._start[key]) * ease) + this._start[key];
				}
				// Non-transitionals or strings
				else{
					this._vm[key] = value;
				}
				
			},this);
			if(ease === 1){
				delete this._start;
			}
			return this;
		},
		tooltipPosition : function(){
			return {
				x : this.x,
				y : this.y
			};
		},
		hasValue: function(){
			return isNumber(this.value);
		}
	});

	Chart.Element.extend = inherits;


	Chart.Point = Chart.Element.extend({
		display: true,
		inRange: function(chartX,chartY){
			var hitDetectionRange = this.hitDetectionRadius + this.radius;
			return ((Math.pow(chartX-this.x, 2)+Math.pow(chartY-this.y, 2)) < Math.pow(hitDetectionRange,2));
		},
		draw : function(){
			if (this.display){
				var ctx = this.ctx;
				ctx.beginPath();

				ctx.arc(this.x, this.y, this.radius, 0, Math.PI*2);
				ctx.closePath();

				ctx.strokeStyle = this.borderColor;
				ctx.lineWidth = this.borderWidth;

				ctx.fillStyle = this.backgroundColor;

				ctx.fill();
				ctx.stroke();
			}


			//Quick debug for bezier curve splining
			//Highlights control points and the line between them.
			//Handy for dev - stripped in the min version.

			// ctx.save();
			// ctx.fillStyle = "black";
			// ctx.strokeStyle = "black"
			// ctx.beginPath();
			// ctx.arc(this.controlPoints.inner.x,this.controlPoints.inner.y, 2, 0, Math.PI*2);
			// ctx.fill();

			// ctx.beginPath();
			// ctx.arc(this.controlPoints.outer.x,this.controlPoints.outer.y, 2, 0, Math.PI*2);
			// ctx.fill();

			// ctx.moveTo(this.controlPoints.inner.x,this.controlPoints.inner.y);
			// ctx.lineTo(this.x, this.y);
			// ctx.lineTo(this.controlPoints.outer.x,this.controlPoints.outer.y);
			// ctx.stroke();

			// ctx.restore();



		}
	});

	Chart.Arc = Chart.Element.extend({
		inRange : function(chartX,chartY){

			var pointRelativePosition = helpers.getAngleFromPoint(this, {
				x: chartX,
				y: chartY
			});

			//Check if within the range of the open/close angle
			var betweenAngles = (pointRelativePosition.angle >= this.startAngle && pointRelativePosition.angle <= this.endAngle),
				withinRadius = (pointRelativePosition.distance >= this.innerRadius && pointRelativePosition.distance <= this.outerRadius);

			return (betweenAngles && withinRadius);
			//Ensure within the outside of the arc centre, but inside arc outer
		},
		tooltipPosition : function(){
			var centreAngle = this.startAngle + ((this.endAngle - this.startAngle) / 2),
				rangeFromCentre = (this.outerRadius - this.innerRadius) / 2 + this.innerRadius;
			return {
				x : this.x + (Math.cos(centreAngle) * rangeFromCentre),
				y : this.y + (Math.sin(centreAngle) * rangeFromCentre)
			};
		},
		draw : function(animationPercent){

			var easingDecimal = animationPercent || 1;

			var ctx = this.ctx;

			ctx.beginPath();

			ctx.arc(this.x, this.y, this.outerRadius, this.startAngle, this.endAngle);

			ctx.arc(this.x, this.y, this.innerRadius, this.endAngle, this.startAngle, true);

			ctx.closePath();
			ctx.strokeStyle = this.borderColor;
			ctx.lineWidth = this.borderWidth;

			ctx.fillStyle = this.backgroundColor;

			ctx.fill();
			ctx.lineJoin = 'bevel';

			if (this.showBorder){
				ctx.stroke();
			}
		}
	});

	Chart.Rectangle = Chart.Element.extend({
		draw : function(){

			var vm = this._vm;

			var ctx = this.ctx,
				halfWidth = vm.width/2,
				leftX = vm.x - halfWidth,
				rightX = vm.x + halfWidth,
				top = vm.base - (vm.base - vm.y),
				halfStroke = vm.borderWidth / 2;

			// Canvas doesn't allow us to stroke inside the width so we can
			// adjust the sizes to fit if we're setting a stroke on the line
			if (vm.borderWidth){
				leftX += halfStroke;
				rightX -= halfStroke;
				top += halfStroke;
			}

			ctx.beginPath();

			ctx.fillStyle = vm.backgroundColor;
			ctx.strokeStyle = vm.borderColor;
			ctx.lineWidth = vm.borderWidth;

			// It'd be nice to keep this class totally generic to any rectangle
			// and simply specify which border to miss out.
			ctx.moveTo(leftX, vm.base);
			ctx.lineTo(leftX, top);
			ctx.lineTo(rightX, top);
			ctx.lineTo(rightX, vm.base);
			ctx.fill();
			if (vm.borderWidth){
				ctx.stroke();
			}
		},
		height : function(){
			var vm = this._vm;
			return vm.base - vm.y;
		},
		inRange : function(chartX,chartY){
			var vm = this._vm;
			if (vm.y < vm.base){
				return (chartX >= vm.x - vm.width/2 && chartX <= vm.x + vm.width/2) && (chartY >= vm.y && chartY <= vm.base);
			} else{
				return (chartX >= vm.x - vm.width / 2 && chartX <= vm.x + vm.width / 2) && (chartY >= vm.base && chartY <= vm.y);
			}
		},
		tooltipPosition : function(){
			var vm = this._vm;
			if (vm.y < vm.base){
				return {
					x : vm.x,
					y : vm.y
				};
			}
			else{
				return {
					x : vm.x,
					y : vm.base
				};
			}
		},
	});

	Chart.Animation = Chart.Element.extend({
		currentStep: null, // the current animation step
		numSteps: 60, // default number of steps
		easing: "", // the easing to use for this animation
		render: null, // render function used by the animation service
		
		onAnimationProgress: null, // user specified callback to fire on each step of the animation 
		onAnimationComplete: null, // user specified callback to fire when the animation finishes
	});
	
	Chart.Tooltip = Chart.Element.extend({
		initialize : function(){
			var options = this._options;
			extend(this, {
				opacity:0,
				xPadding: options.tooltipXPadding,
				yPadding: options.tooltipYPadding,
				xOffset: options.tooltipXOffset,
				backgroundColor: options.tooltipBackgroundColor,
				textColor: options.tooltipFontColor,
				_fontFamily: options.tooltipFontFamily,
				_fontStyle: options.tooltipFontStyle,
				fontSize: options.tooltipFontSize,
				titleTextColor: options.tooltipTitleFontColor,
				_titleFontFamily: options.tooltipTitleFontFamily,
				_titleFontStyle: options.tooltipTitleFontStyle,
				titleFontSize: options.tooltipTitleFontSize,
				caretHeight: options.tooltipCaretSize,
				cornerRadius: options.tooltipCornerRadius,
				legendColorBackground : options.multiTooltipKeyBackground,
				labels: [],
				colors: [],
			});
		},
		update: function(){

			var ctx = this._chart.ctx;

			switch(this._options.hoverMode){
				case 'single':
					helpers.extend(this, {
						text: template(this._options.tooltipTemplate, this._active),
					});
					var tooltipPosition = this._active[0].tooltipPosition();
					helpers.extend(this.tooltip, {
						x: Math.round(tooltipPosition.x),
						y: Math.round(tooltipPosition.y),
					});
					break;

				case 'label':

					// Tooltip Content

					var dataArray,
						dataIndex;

					var labels = [],
						colors = [];

					for (var i = this._data.datasets.length - 1; i >= 0; i--) {
						dataArray = this._data.datasets[i].metaData;
						dataIndex = indexOf(dataArray, this._active[0]);
						if (dataIndex !== -1){
							break;
						}
					}

					var medianPosition = (function(index) {
						// Get all the points at that particular index
						var elements = [],
							dataCollection,
							xPositions = [],
							yPositions = [],
							xMax,
							yMax,
							xMin,
							yMin;
						helpers.each(this._data.datasets, function(dataset){
							dataCollection = dataset.metaData;
							if (dataCollection[dataIndex] && dataCollection[dataIndex].hasValue()){
								elements.push(dataCollection[dataIndex]);
							}
						});

						helpers.each(elements, function(element) {
							xPositions.push(element._vm.x);
							yPositions.push(element._vm.y);

							//Include any colour information about the element
							labels.push(helpers.template(this._options.multiTooltipTemplate, element));
							colors.push({
								fill: element._vm.backgroundColor,
								stroke: element._vm.borderColor
							});

						}, this);

						yMin = min(yPositions);
						yMax = max(yPositions);

						xMin = min(xPositions);
						xMax = max(xPositions);

						return {
							x: (xMin > this._chart.width/2) ? xMin : xMax,
							y: (yMin + yMax)/2,
						};
					}).call(this, dataIndex);

					// Apply for now
					helpers.extend(this, {
						x: medianPosition.x,
						y: medianPosition.y,
						labels: labels,
						title: this._active.length ? this._active[0].label : '',
						legendColors: colors,
						legendBackgroundColor : this._options.multiTooltipKeyBackground,
					});


					// Calculate Appearance Tweaks

					this.height = (labels.length * this.fontSize) + ((labels.length-1) * (this.fontSize/2)) + (this.yPadding*2) + this.titleFontSize *1.5;

					var titleWidth = ctx.measureText(this.title).width,
						//Label has a legend square as well so account for this.
						labelWidth = longestText(ctx,this.font,labels) + this.fontSize + 3,
						longestTextWidth = max([labelWidth,titleWidth]);

					this.width = longestTextWidth + (this.xPadding*2);


					var halfHeight = this.height/2;

					//Check to ensure the height will fit on the canvas
					if (this.y - halfHeight < 0 ){
						this.y = halfHeight;
					} else if (this.y + halfHeight > this._chart.height){
						this.y = this._chart.height - halfHeight;
					}

					//Decide whether to align left or right based on position on canvas
					if (this.x > this._chart.width/2){
						this.x -= this.xOffset + this.width;
					} else {
						this.x += this.xOffset;
					}
				break;
			}

			return this;
		},
		draw : function(){

			var ctx = this._chart.ctx;
			var vm = this._vm;

			switch(this._options.hoverMode){
				case 'single':

					ctx.font = fontString(vm.fontSize,vm._fontStyle,vm._fontFamily);

					vm.xAlign = "center";
					vm.yAlign = "above";

					//Distance between the actual element.y position and the start of the tooltip caret
					var caretPadding = vm.caretPadding = 2;

					var tooltipWidth = ctx.measureText(vm.text).width + 2*vm.xPadding,
						tooltipRectHeight = vm.fontSize + 2*vm.yPadding,
						tooltipHeight = tooltipRectHeight + vm.caretHeight + caretPadding;

					if (vm.x + tooltipWidth/2 >this._chart.width){
						vm.xAlign = "left";
					} else if (vm.x - tooltipWidth/2 < 0){
						vm.xAlign = "right";
					}

					if (vm.y - tooltipHeight < 0){
						vm.yAlign = "below";
					}

					var tooltipX = vm.x - tooltipWidth/2,
						tooltipY = vm.y - tooltipHeight;

					ctx.fillStyle = helpers.color(vm.backgroundColor).alpha(vm.opacity).rgbString();

					// Custom Tooltips
					if(this._custom){
						this._custom(this._vm);
					}
					else{
						switch(vm.yAlign){
							case "above":
								//Draw a caret above the x/y
								ctx.beginPath();
								ctx.moveTo(vm.x,vm.y - caretPadding);
								ctx.lineTo(vm.x + vm.caretHeight, vm.y - (caretPadding + vm.caretHeight));
								ctx.lineTo(vm.x - vm.caretHeight, vm.y - (caretPadding + vm.caretHeight));
								ctx.closePath();
								ctx.fill();
								break;
							case "below":
								tooltipY = vm.y + caretPadding + vm.caretHeight;
								//Draw a caret below the x/y
								ctx.beginPath();
								ctx.moveTo(vm.x, vm.y + caretPadding);
								ctx.lineTo(vm.x + vm.caretHeight, vm.y + caretPadding + vm.caretHeight);
								ctx.lineTo(vm.x - vm.caretHeight, vm.y + caretPadding + vm.caretHeight);
								ctx.closePath();
								ctx.fill();
								break;
						}

						switch(vm.xAlign){
							case "left":
								tooltipX = vm.x - tooltipWidth + (vm.cornerRadius + vm.caretHeight);
								break;
							case "right":
								tooltipX = vm.x - (vm.cornerRadius + vm.caretHeight);
								break;
						}

						drawRoundedRectangle(ctx,tooltipX,tooltipY,tooltipWidth,tooltipRectHeight,vm.cornerRadius);

						ctx.fill();

						ctx.fillStyle = helpers.color(vm.textColor).alpha(vm.opacity).rgbString();
						ctx.textAlign = "center";
						ctx.textBaseline = "middle";
						ctx.fillText(vm.text, tooltipX + tooltipWidth/2, tooltipY + tooltipRectHeight/2);

					}
					break;	
				case 'label':

					drawRoundedRectangle(ctx, vm.x, vm.y - vm.height/2, vm.width, vm.height, vm.cornerRadius);
					ctx.fillStyle = helpers.color(vm.backgroundColor).alpha(vm.opacity).rgbString();
					ctx.fill();
					ctx.closePath();

					ctx.textAlign = "left";
					ctx.textBaseline = "middle";
					ctx.fillStyle = helpers.color(vm.titleTextColor).alpha(vm.opacity).rgbString();
					ctx.font = fontString(vm.fontSize, vm._titleFontStyle, vm._titleFontFamily);
					ctx.fillText(vm.title, vm.x + vm.xPadding, this.getLineHeight(0));

					ctx.font = fontString(vm.fontSize, vm._fontStyle, vm._fontFamily);
					helpers.each(vm.labels,function(label,index){
						ctx.fillStyle = helpers.color(vm.textColor).alpha(vm.opacity).rgbString();
						ctx.fillText(label,vm.x + vm.xPadding + vm.fontSize + 3, this.getLineHeight(index + 1));

						//A bit gnarly, but clearing this rectangle breaks when using explorercanvas (clears whole canvas)
						//ctx.clearRect(vm.x + vm.xPadding, this.getLineHeight(index + 1) - vm.fontSize/2, vm.fontSize, vm.fontSize);
						//Instead we'll make a white filled block to put the legendColour palette over.

						ctx.fillStyle = helpers.color(vm.legendBackgroundColor).alpha(vm.opacity).rgbString();
						ctx.fillRect(vm.x + vm.xPadding, this.getLineHeight(index + 1) - vm.fontSize / 2, vm.fontSize, vm.fontSize);

						ctx.fillStyle = helpers.color(vm.legendColors[index].fill).alpha(vm.opacity).rgbString();
						ctx.fillRect(vm.x + vm.xPadding, this.getLineHeight(index + 1) - vm.fontSize / 2, vm.fontSize, vm.fontSize);


					},this);
				break;
			}
		},
		getLineHeight : function(index){
			var baseLineHeight = this._vm.y - (this._vm.height/2) + this._vm.yPadding,
				afterTitleIndex = index-1;

			//If the index is zero, we're getting the title
			if (index === 0){
				return baseLineHeight + this._vm.titleFontSize/2;
			} else{
				return baseLineHeight + ((this._vm.fontSize*1.5*afterTitleIndex) + this._vm.fontSize/2) + this._vm.titleFontSize * 1.5;
			}

		},
	});

	Chart.Scale = Chart.Element.extend({
		initialize : function(){
			this.fit();
		},
		buildYLabels : function(){
			this.yLabels = [];

			var stepDecimalPlaces = getDecimalPlaces(this.stepValue);

			for (var i=0; i<=this.steps; i++){
				this.yLabels.push(template(this.templateString,{value:(this.min + (i * this.stepValue)).toFixed(stepDecimalPlaces)}));
			}
			this.yLabelWidth = (this.display && this.showLabels) ? longestText(this.ctx,this.font,this.yLabels) + 10 : 0;
		},
		addXLabel : function(label){
			this.xLabels.push(label);
			this.valuesCount++;
			this.fit();
		},
		removeXLabel : function(){
			this.xLabels.shift();
			this.valuesCount--;
			this.fit();
		},
		// Fitting loop to rotate x Labels and figure out what fits there, and also calculate how many Y steps to use
		fit: function(){
			// First we need the width of the yLabels, assuming the xLabels aren't rotated

			// To do that we need the base line at the top and base of the chart, assuming there is no x label rotation
			this.startPoint = (this.display) ? this.fontSize : 0;
			this.endPoint = (this.display) ? this.height - (this.fontSize * 1.5) - 5 : this.height; // -5 to pad labels

			// Apply padding settings to the start and end point.
			this.startPoint += this.padding;
			this.endPoint -= this.padding;

			// Cache the starting endpoint, excluding the space for x labels
			var cachedEndPoint = this.endPoint;

			// Cache the starting height, so can determine if we need to recalculate the scale yAxis
			var cachedHeight = this.endPoint - this.startPoint,
				cachedYLabelWidth;

			// Build the current yLabels so we have an idea of what size they'll be to start
			/*
			 *	This sets what is returned from calculateScaleRange as static properties of this class:
			 *
				this.steps;
				this.stepValue;
				this.min;
				this.max;
			 *
			 */
			this.calculateYRange(cachedHeight);

			// With these properties set we can now build the array of yLabels
			// and also the width of the largest yLabel
			this.buildYLabels();

			this.calculateXLabelRotation();

			while((cachedHeight > this.endPoint - this.startPoint)){
				cachedHeight = this.endPoint - this.startPoint;
				cachedYLabelWidth = this.yLabelWidth;

				this.calculateYRange(cachedHeight);
				this.buildYLabels();

				// Only go through the xLabel loop again if the yLabel width has changed
				if (cachedYLabelWidth < this.yLabelWidth){
					this.endPoint = cachedEndPoint;
					this.calculateXLabelRotation();
				}
			}

		},
		calculateXLabelRotation : function(){
			//Get the width of each grid by calculating the difference
			//between x offsets between 0 and 1.

			this.ctx.font = this.font;

			var firstWidth = this.ctx.measureText(this.xLabels[0]).width,
				lastWidth = this.ctx.measureText(this.xLabels[this.xLabels.length - 1]).width,
				firstRotated,
				lastRotated;


			this.xScalePaddingRight = lastWidth/2 + 3;
			this.xScalePaddingLeft = (firstWidth/2 > this.yLabelWidth) ? firstWidth/2 : this.yLabelWidth;

			this.xLabelRotation = 0;
			if (this.display){
				var originalLabelWidth = longestText(this.ctx,this.font,this.xLabels),
					cosRotation,
					firstRotatedWidth;
				this.xLabelWidth = originalLabelWidth;
				//Allow 3 pixels x2 padding either side for label readability
				var xGridWidth = Math.floor(this.calculateX(1) - this.calculateX(0)) - 6;

				//Max label rotate should be 90 - also act as a loop counter
				while ((this.xLabelWidth > xGridWidth && this.xLabelRotation === 0) || (this.xLabelWidth > xGridWidth && this.xLabelRotation <= 90 && this.xLabelRotation > 0)){
					cosRotation = Math.cos(toRadians(this.xLabelRotation));

					firstRotated = cosRotation * firstWidth;
					lastRotated = cosRotation * lastWidth;

					// We're right aligning the text now.
					if (firstRotated + this.fontSize / 2 > this.yLabelWidth){
						this.xScalePaddingLeft = firstRotated + this.fontSize / 2;
					}
					this.xScalePaddingRight = this.fontSize/2;


					this.xLabelRotation++;
					this.xLabelWidth = cosRotation * originalLabelWidth;

				}
				if (this.xLabelRotation > 0){
					this.endPoint -= Math.sin(toRadians(this.xLabelRotation))*originalLabelWidth + 3;
				}
			}
			else{
				this.xLabelWidth = 0;
				this.xScalePaddingRight = this.padding;
				this.xScalePaddingLeft = this.padding;
			}

		},
		// Needs to be overidden in each Chart type
		// Otherwise we need to pass all the data into the scale class
		calculateYRange: noop,
		drawingArea: function(){
			return this.startPoint - this.endPoint;
		},
		calculateY : function(value){
			var scalingFactor = this.drawingArea() / (this.min - this.max);
			return this.endPoint - (scalingFactor * (value - this.min));
		},
		calculateX : function(index){
			var isRotated = (this.xLabelRotation > 0),
				// innerWidth = (this.offsetGridLines) ? this.width - offsetLeft - this.padding : this.width - (offsetLeft + halfLabelWidth * 2) - this.padding,
				innerWidth = this.width - (this.xScalePaddingLeft + this.xScalePaddingRight),
				valueWidth = innerWidth/Math.max((this.valuesCount - ((this.offsetGridLines) ? 0 : 1)), 1),
				valueOffset = (valueWidth * index) + this.xScalePaddingLeft;

			if (this.offsetGridLines){
				valueOffset += (valueWidth/2);
			}

			return Math.round(valueOffset);
		},
		update : function(newProps){
			helpers.extend(this, newProps);
			this.fit();
		},
		draw : function(){
			var ctx = this.ctx,
				yLabelGap = (this.endPoint - this.startPoint) / this.steps,
				xStart = Math.round(this.xScalePaddingLeft);
			if (this.display){
				ctx.fillStyle = this.textColor;
				ctx.font = this.font;
				each(this.yLabels,function(labelString,index){
					var yLabelCenter = this.endPoint - (yLabelGap * index),
						linePositionY = Math.round(yLabelCenter),
						drawHorizontalLine = this.showHorizontalLines;

					ctx.textAlign = "right";
					ctx.textBaseline = "middle";
					if (this.showLabels){
						ctx.fillText(labelString,xStart - 10,yLabelCenter);
					}

					// This is X axis, so draw it
					if (index === 0 && !drawHorizontalLine){
						drawHorizontalLine = true;
					}

					if (drawHorizontalLine){
						ctx.beginPath();
					}

					if (index > 0){
						// This is a grid line in the centre, so drop that
						ctx.lineWidth = this.gridLineWidth;
						ctx.strokeStyle = this.gridLineColor;
					} else {
						// This is the first line on the scale
						ctx.lineWidth = this.lineWidth;
						ctx.strokeStyle = this.lineColor;
					}

					linePositionY += helpers.aliasPixel(ctx.lineWidth);

					if(drawHorizontalLine){
						ctx.moveTo(xStart, linePositionY);
						ctx.lineTo(this.width, linePositionY);
						ctx.stroke();
						ctx.closePath();
					}

					ctx.lineWidth = this.lineWidth;
					ctx.strokeStyle = this.lineColor;
					ctx.beginPath();
					ctx.moveTo(xStart - 5, linePositionY);
					ctx.lineTo(xStart, linePositionY);
					ctx.stroke();
					ctx.closePath();

				},this);

				each(this.xLabels,function(label,index){
					var xPos = this.calculateX(index) + aliasPixel(this.lineWidth),
						// Check to see if line/bar here and decide where to place the line
						linePos = this.calculateX(index - (this.offsetGridLines ? 0.5 : 0)) + aliasPixel(this.lineWidth),
						isRotated = (this.xLabelRotation > 0),
						drawVerticalLine = this.showVerticalLines;

					// This is Y axis, so draw it
					if (index === 0 && !drawVerticalLine){
						drawVerticalLine = true;
					}

					if (drawVerticalLine){
						ctx.beginPath();
					}

					if (index > 0){
						// This is a grid line in the centre, so drop that
						ctx.lineWidth = this.gridLineWidth;
						ctx.strokeStyle = this.gridLineColor;
					} else {
						// This is the first line on the scale
						ctx.lineWidth = this.lineWidth;
						ctx.strokeStyle = this.lineColor;
					}

					if (drawVerticalLine){
						ctx.moveTo(linePos,this.endPoint);
						ctx.lineTo(linePos,this.startPoint - 3);
						ctx.stroke();
						ctx.closePath();
					}


					ctx.lineWidth = this.lineWidth;
					ctx.strokeStyle = this.lineColor;


					// Small lines at the bottom of the base grid line
					ctx.beginPath();
					ctx.moveTo(linePos,this.endPoint);
					ctx.lineTo(linePos,this.endPoint + 5);
					ctx.stroke();
					ctx.closePath();

					ctx.save();
					ctx.translate(xPos,(isRotated) ? this.endPoint + 12 : this.endPoint + 8);
					ctx.rotate(toRadians(this.xLabelRotation)*-1);
					ctx.font = this.font;
					ctx.textAlign = (isRotated) ? "right" : "center";
					ctx.textBaseline = (isRotated) ? "middle" : "top";
					ctx.fillText(label, 0, 0);
					ctx.restore();
				},this);

			}
		}

	});

	Chart.RadialScale = Chart.Element.extend({
		initialize: function(){
			this.size = min([this.height, this.width]);
			this.drawingArea = (this.display) ? (this.size/2) - (this.fontSize/2 + this.backdropPaddingY) : (this.size/2);
		},
		calculateCenterOffset: function(value){
			// Take into account half font size + the yPadding of the top value
			var scalingFactor = this.drawingArea / (this.max - this.min);

			return (value - this.min) * scalingFactor;
		},
		update : function(){
			if (!this.lineArc){
				this.setScaleSize();
			} else {
				this.drawingArea = (this.display) ? (this.size/2) - (this.fontSize/2 + this.backdropPaddingY) : (this.size/2);
			}
			this.buildYLabels();
		},
		buildYLabels: function(){
			this.yLabels = [];

			var stepDecimalPlaces = getDecimalPlaces(this.stepValue);

			for (var i=0; i<=this.steps; i++){
				this.yLabels.push(template(this.templateString,{value:(this.min + (i * this.stepValue)).toFixed(stepDecimalPlaces)}));
			}
		},
		getCircumference : function(){
			return ((Math.PI*2) / this.valuesCount);
		},
		setScaleSize: function(){
			/*
			 * Right, this is really confusing and there is a lot of maths going on here
			 * The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9
			 *
			 * Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif
			 *
			 * Solution:
			 *
			 * We assume the radius of the polygon is half the size of the canvas at first
			 * at each index we check if the text overlaps.
			 *
			 * Where it does, we store that angle and that index.
			 *
			 * After finding the largest index and angle we calculate how much we need to remove
			 * from the shape radius to move the point inwards by that x.
			 *
			 * We average the left and right distances to get the maximum shape radius that can fit in the box
			 * along with labels.
			 *
			 * Once we have that, we can find the centre point for the chart, by taking the x text protrusion
			 * on each side, removing that from the size, halving it and adding the left x protrusion width.
			 *
			 * This will mean we have a shape fitted to the canvas, as large as it can be with the labels
			 * and position it in the most space efficient manner
			 *
			 * https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif
			 */


			// Get maximum radius of the polygon. Either half the height (minus the text width) or half the width.
			// Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points
			var largestPossibleRadius = min([(this.height/2 - this.pointLabelFontSize - 5), this.width/2]),
				pointPosition,
				i,
				textWidth,
				halfTextWidth,
				furthestRight = this.width,
				furthestRightIndex,
				furthestRightAngle,
				furthestLeft = 0,
				furthestLeftIndex,
				furthestLeftAngle,
				xProtrusionLeft,
				xProtrusionRight,
				radiusReductionRight,
				radiusReductionLeft,
				maxWidthRadius;
			this.ctx.font = fontString(this.pointLabelFontSize,this.pointLabelFontStyle,this.pointLabelFontFamily);
			for (i=0;i<this.valuesCount;i++){
				// 5px to space the text slightly out - similar to what we do in the draw function.
				pointPosition = this.getPointPosition(i, largestPossibleRadius);
				textWidth = this.ctx.measureText(template(this.templateString, { value: this.labels[i] })).width + 5;
				if (i === 0 || i === this.valuesCount/2){
					// If we're at index zero, or exactly the middle, we're at exactly the top/bottom
					// of the radar chart, so text will be aligned centrally, so we'll half it and compare
					// w/left and right text sizes
					halfTextWidth = textWidth/2;
					if (pointPosition.x + halfTextWidth > furthestRight) {
						furthestRight = pointPosition.x + halfTextWidth;
						furthestRightIndex = i;
					}
					if (pointPosition.x - halfTextWidth < furthestLeft) {
						furthestLeft = pointPosition.x - halfTextWidth;
						furthestLeftIndex = i;
					}
				}
				else if (i < this.valuesCount/2) {
					// Less than half the values means we'll left align the text
					if (pointPosition.x + textWidth > furthestRight) {
						furthestRight = pointPosition.x + textWidth;
						furthestRightIndex = i;
					}
				}
				else if (i > this.valuesCount/2){
					// More than half the values means we'll right align the text
					if (pointPosition.x - textWidth < furthestLeft) {
						furthestLeft = pointPosition.x - textWidth;
						furthestLeftIndex = i;
					}
				}
			}

			xProtrusionLeft = furthestLeft;

			xProtrusionRight = Math.ceil(furthestRight - this.width);

			furthestRightAngle = this.getIndexAngle(furthestRightIndex);

			furthestLeftAngle = this.getIndexAngle(furthestLeftIndex);

			radiusReductionRight = xProtrusionRight / Math.sin(furthestRightAngle + Math.PI/2);

			radiusReductionLeft = xProtrusionLeft / Math.sin(furthestLeftAngle + Math.PI/2);

			// Ensure we actually need to reduce the size of the chart
			radiusReductionRight = (isNumber(radiusReductionRight)) ? radiusReductionRight : 0;
			radiusReductionLeft = (isNumber(radiusReductionLeft)) ? radiusReductionLeft : 0;

			this.drawingArea = largestPossibleRadius - (radiusReductionLeft + radiusReductionRight)/2;

			//this.drawingArea = min([maxWidthRadius, (this.height - (2 * (this.pointLabelFontSize + 5)))/2])
			this.setCenterPoint(radiusReductionLeft, radiusReductionRight);

		},
		setCenterPoint: function(leftMovement, rightMovement){

			var maxRight = this.width - rightMovement - this.drawingArea,
				maxLeft = leftMovement + this.drawingArea;

			this.xCenter = (maxLeft + maxRight)/2;
			// Always vertically in the centre as the text height doesn't change
			this.yCenter = (this.height/2);
		},

		getIndexAngle : function(index){
			var angleMultiplier = (Math.PI * 2) / this.valuesCount;
			// Start from the top instead of right, so remove a quarter of the circle

			return index * angleMultiplier - (Math.PI/2);
		},
		getPointPosition : function(index, distanceFromCenter){
			var thisAngle = this.getIndexAngle(index);
			return {
				x : (Math.cos(thisAngle) * distanceFromCenter) + this.xCenter,
				y : (Math.sin(thisAngle) * distanceFromCenter) + this.yCenter
			};
		},
		draw: function(){
			if (this.display){
				var ctx = this.ctx;
				each(this.yLabels, function(label, index){
					// Don't draw a centre value
					if (index > 0){
						var yCenterOffset = index * (this.drawingArea/this.steps),
							yHeight = this.yCenter - yCenterOffset,
							pointPosition;

						// Draw circular lines around the scale
						if (this.lineWidth > 0){
							ctx.strokeStyle = this.lineColor;
							ctx.lineWidth = this.lineWidth;

							if(this.lineArc){
								ctx.beginPath();
								ctx.arc(this.xCenter, this.yCenter, yCenterOffset, 0, Math.PI*2);
								ctx.closePath();
								ctx.stroke();
							} else{
								ctx.beginPath();
								for (var i=0;i<this.valuesCount;i++)
								{
									pointPosition = this.getPointPosition(i, this.calculateCenterOffset(this.min + (index * this.stepValue)));
									if (i === 0){
										ctx.moveTo(pointPosition.x, pointPosition.y);
									} else {
										ctx.lineTo(pointPosition.x, pointPosition.y);
									}
								}
								ctx.closePath();
								ctx.stroke();
							}
						}
						if(this.showLabels){
							ctx.font = fontString(this.fontSize,this._fontStyle,this._fontFamily);
							if (this.showLabelBackdrop){
								var labelWidth = ctx.measureText(label).width;
								ctx.fillStyle = this.backdropColor;
								ctx.fillRect(
									this.xCenter - labelWidth/2 - this.backdropPaddingX,
									yHeight - this.fontSize/2 - this.backdropPaddingY,
									labelWidth + this.backdropPaddingX*2,
									this.fontSize + this.backdropPaddingY*2
								);
							}
							ctx.textAlign = 'center';
							ctx.textBaseline = "middle";
							ctx.fillStyle = this.fontColor;
							ctx.fillText(label, this.xCenter, yHeight);
						}
					}
				}, this);

				if (!this.lineArc){
					ctx.lineWidth = this.angleLineWidth;
					ctx.strokeStyle = this.angleLineColor;
					for (var i = this.valuesCount - 1; i >= 0; i--) {
						if (this.angleLineWidth > 0){
							var outerPosition = this.getPointPosition(i, this.calculateCenterOffset(this.max));
							ctx.beginPath();
							ctx.moveTo(this.xCenter, this.yCenter);
							ctx.lineTo(outerPosition.x, outerPosition.y);
							ctx.stroke();
							ctx.closePath();
						}
						// Extra 3px out for some label spacing
						var pointLabelPosition = this.getPointPosition(i, this.calculateCenterOffset(this.max) + 5);
						ctx.font = fontString(this.pointLabelFontSize,this.pointLabelFontStyle,this.pointLabelFontFamily);
						ctx.fillStyle = this.pointLabelFontColor;

						var labelsCount = this.labels.length,
							halfLabelsCount = this.labels.length/2,
							quarterLabelsCount = halfLabelsCount/2,
							upperHalf = (i < quarterLabelsCount || i > labelsCount - quarterLabelsCount),
							exactQuarter = (i === quarterLabelsCount || i === labelsCount - quarterLabelsCount);
						if (i === 0){
							ctx.textAlign = 'center';
						} else if(i === halfLabelsCount){
							ctx.textAlign = 'center';
						} else if (i < halfLabelsCount){
							ctx.textAlign = 'left';
						} else {
							ctx.textAlign = 'right';
						}

						// Set the correct text baseline based on outer positioning
						if (exactQuarter){
							ctx.textBaseline = 'middle';
						} else if (upperHalf){
							ctx.textBaseline = 'bottom';
						} else {
							ctx.textBaseline = 'top';
						}

						ctx.fillText(this.labels[i], pointLabelPosition.x, pointLabelPosition.y);
					}
				}
			}
		}
	});

	Chart.animationService = {
		frameDuration: 17,
		animations: [],
		dropFrames: 0,
		addAnimation: function(chartInstance, animationObject, customDuration) {

			if(!customDuration){
				chartInstance.animating = true;
			}

			for (var index = 0; index < this.animations.length; ++ index){
				if (this.animations[index].chartInstance === chartInstance){
					// replacing an in progress animation
					this.animations[index].animationObject = animationObject;
					return;
				}
			}
			
			this.animations.push({
				chartInstance: chartInstance,
				animationObject: animationObject
			});

			// If there are no animations queued, manually kickstart a digest, for lack of a better word
			if (this.animations.length == 1) {
				helpers.requestAnimFrame.call(window, this.digestWrapper);
			}
		},
		// Cancel the animation for a given chart instance
		cancelAnimation: function(chartInstance) {
			var index = helpers.findNextWhere(this.animations, function(animationWrapper) {
				return animationWrapper.chartInstance === chartInstance;
			});
			
			if (index){
				this.animations.splice(index, 1);
				chartInstance.animating = false;
			}
		},
		// calls startDigest with the proper context
		digestWrapper: function() {
			Chart.animationService.startDigest.call(Chart.animationService);
		},
		startDigest: function() {

			var startTime = Date.now();
			var framesToDrop = 0;

			if(this.dropFrames > 1){
				framesToDrop = Math.floor(this.dropFrames);
				this.dropFrames -= framesToDrop;
			}

			for (var i = 0; i < this.animations.length; i++) {

				if (this.animations[i].animationObject.currentStep === null){
					this.animations[i].animationObject.currentStep = 0;
				}

				this.animations[i].animationObject.currentStep += 1 + framesToDrop;
				if(this.animations[i].animationObject.currentStep > this.animations[i].animationObject.numSteps){
					this.animations[i].animationObject.currentStep = this.animations[i].animationObject.numSteps;
				}
				
				this.animations[i].animationObject.render(this.animations[i].chartInstance, this.animations[i].animationObject);
				
				if (this.animations[i].animationObject.currentStep == this.animations[i].animationObject.numSteps){
					// executed the last frame. Remove the animation.
					this.animations[i].chartInstance.animating = false;
					this.animations.splice(i, 1);
					// Keep the index in place to offset the splice
					i--;
				}
			}

			var endTime = Date.now();
			var delay = endTime - startTime - this.frameDuration;
			var frameDelay = delay / this.frameDuration;

			if(frameDelay > 1){
				this.dropFrames += frameDelay;
			}

			// Do we have more stuff to animate?
			if (this.animations.length > 0){
				helpers.requestAnimFrame.call(window, this.digestWrapper);
			}
		}
	};

	// Attach global event to resize each chart instance when the browser resizes
	helpers.addEvent(window, "resize", (function(){
		// Basic debounce of resize function so it doesn't hurt performance when resizing browser.
		var timeout;
		return function(){
			clearTimeout(timeout);
			timeout = setTimeout(function(){
				each(Chart.instances,function(instance){
					// If the responsive flag is set in the chart instance config
					// Cascade the resize event down to the chart.
					if (instance.options.responsive){
						instance.resize(instance.render, true);
					}
				});
			}, 50);
		};
	})());


	if (amd) {
		define(function(){
			return Chart;
		});
	} else if (typeof module === 'object' && module.exports) {
		module.exports = Chart;
	}

	root.Chart = Chart;

	Chart.noConflict = function(){
		root.Chart = previous;
		return Chart;
	};

}).call(this);

(function(){
	"use strict";

	var root = this,
		Chart = root.Chart,
		helpers = Chart.helpers;


	var defaultConfig = {
		//Boolean - Whether the scale should start at zero, or an order of magnitude down from the lowest value
		scaleBeginAtZero : true,

		//Boolean - Whether grid lines are shown across the chart
		scaleShowGridLines : true,

		//String - Colour of the grid lines
		scaleGridLineColor : "rgba(0,0,0,.05)",

		//Number - Width of the grid lines
		scaleGridLineWidth : 1,

		//Boolean - Whether to show horizontal lines (except X axis)
		scaleShowHorizontalLines: true,

		//Boolean - Whether to show vertical lines (except Y axis)
		scaleShowVerticalLines: true,

		//Number - Pixel width of the bar border
		barBorderWidth : 2,

		//Number - Spacing between each of the X value sets
		barValueSpacing : 5,

		//Number - Spacing between data sets within X values
		barDatasetSpacing : 1,

		//String / Boolean - Hover mode for events.
		hoverMode : 'single', // 'label', 'dataset', 'false'

		//Function - Custom hover handler
		onHover : null,

		//Function - Custom hover handler
		hoverAnimationDuration : 400,

		//String - A legend template
		legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span style=\"background-color:<%=datasets[i].backgroundColor%>\"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>"

	};


	Chart.Type.extend({
		name: "Bar",
		defaults : defaultConfig,
		initialize:  function(data){

			// Save data as a source for updating of values & methods
			this.data = data;

			//Expose options as a scope variable here so we can access it in the ScaleClass
			var options = this.options;

			this.ScaleClass = Chart.Scale.extend({
				offsetGridLines : true,
				calculateBarX : function(datasetCount, datasetIndex, elementIndex){
					//Reusable method for calculating the xPosition of a given bar based on datasetIndex & width of the bar
					var xWidth = this.calculateBaseWidth(),
						xAbsolute = this.calculateX(elementIndex) - (xWidth/2),
						barWidth = this.calculateBarWidth(datasetCount);

					return xAbsolute + (barWidth * datasetIndex) + (datasetIndex * options.barDatasetSpacing) + barWidth/2;
				},
				calculateBaseWidth : function(){
					return (this.calculateX(1) - this.calculateX(0)) - (2*options.barValueSpacing);
				},
				calculateBarWidth : function(datasetCount){
					//The padding between datasets is to the right of each bar, providing that there are more than 1 dataset
					var baseWidth = this.calculateBaseWidth() - ((datasetCount - 1) * options.barDatasetSpacing);

					return (baseWidth / datasetCount);
				}
			});

			// Events
			helpers.bindEvents(this, this.options.tooltipEvents, this.onHover);
			
			//Declare the extension of the default point, to cater for the options passed in to the constructor
			this.BarClass = Chart.Rectangle.extend({
				ctx : this.chart.ctx,
			});

			// Build Scale
			this.buildScale(data.labels);

			//Create a new bar for each piece of data
			helpers.each(this.data.datasets,function(dataset,datasetIndex){
				dataset.metaData = [];
				helpers.each(dataset.data,function(dataPoint,index){
					dataset.metaData.push(new this.BarClass());
				},this);
			},this);

			// Set defaults for bars
			this.eachBars(function(bar, index, datasetIndex){
				helpers.extend(bar, {
					width : this.scale.calculateBarWidth(this.data.datasets.length),
					x: this.scale.calculateBarX(this.data.datasets.length, datasetIndex, index),
					y: this.calculateBarBase(),
					_datasetIndex: datasetIndex,
					_index: index,
				});
				// Copy to view model
				bar.save();
			}, this);

			// Create tooltip instance exclusively for this chart with some defaults.
			this.tooltip = new Chart.Tooltip({
				_chart: this.chart,
				_data: this.data,
				_options: this.options,
			}, this);

			// Update the chart with the latest data.
			this.update();
		},
		onHover: function(e){


			// If exiting chart
			if(e.type == 'mouseout'){
				return false;
			}

			this.lastActive = this.lastActive || [];

			// Find Active Elements
			this.active = function(){
				switch(this.options.hoverMode){
					case 'single':
						return this.getBarAtEvent(e);
					case 'label':
						return this.getBarsAtEvent(e);
					case 'dataset':
						return this.getDatasetAtEvent(e);
					default:
						return e;
				}
			}.call(this);

			// On Hover hook
			if(this.options.onHover){
				this.options.onHover.call(this, this.active);
			}

			// Remove styling for last active (even if it may still be active)
			if(this.lastActive){
				switch(this.options.hoverMode){
					case 'single':
						this.lastActive[0].backgroundColor = this.data.datasets[this.lastActive[0]._datasetIndex].backgroundColor;
						this.lastActive[0].borderColor = this.data.datasets[this.lastActive[0]._datasetIndex].borderColor;
						this.lastActive[0].borderWidth = 0;
						break;
					case 'label':
						for (var i = 0; i < this.lastActive.length; i++) {
							this.lastActive[i].backgroundColor = this.data.datasets[this.lastActive[i]._datasetIndex].backgroundColor;
							this.lastActive[i].borderColor = this.data.datasets[this.lastActive[i]._datasetIndex].borderColor;
							this.lastActive[i].borderWidth = 0;
						}
						break;
					case 'dataset':
						break;
					default:
						// do nothing
				}
			}
			
			// Built in hover actions
			if(this.active.length && this.options.hoverMode){
				switch(this.options.hoverMode){
					case 'single':
						this.active[0].backgroundColor = this.data.datasets[this.active[0]._datasetIndex].hoverBackgroundColor || helpers.color(this.active[0].backgroundColor).saturate(0.5).darken(0.35).rgbString();
						this.active[0].borderColor = this.data.datasets[this.active[0]._datasetIndex].hoverBorderColor || helpers.color(this.active[0].borderColor).saturate(0.5).darken(0.35).rgbString();
						break;
					case 'label':
						for (var i = 0; i < this.active.length; i++) {
							this.active[i].backgroundColor = this.data.datasets[this.active[i]._datasetIndex].hoverBackgroundColor || helpers.color(this.active[i].backgroundColor).saturate(0.5).darken(0.35).rgbString();
							this.active[i].borderColor = this.data.datasets[this.active[i]._datasetIndex].hoverBorderColor || helpers.color(this.active[i].borderColor).saturate(0.5).darken(0.35).rgbString();
						}
						break;
					case 'dataset':
						break;
					default:
						// do nothing
				}
			}


			// Built in Tooltips
			if(this.options.showTooltips){

				// The usual updates
				this.tooltip.initialize();

				// Active
				if(this.active.length){
					helpers.extend(this.tooltip, {
						opacity: 1,
						_active: this.active,
					});

					this.tooltip.update();
				}
				else{
					// Inactive
					helpers.extend(this.tooltip, {
						opacity: 0,
					});
				}
			}


			if(!this.animating){

				// If entering
				if(!this.lastActive.length && this.active.length){
					console.log('entering');
					this.tooltip.pivot();
					this.stop();
					this.render(false, this.options.hoverAnimationDuration);
				}

				var changed;
				
				helpers.each(this.active, function(element, index){
					if (element !== this.lastActive[index]){
						changed = true;
					}
				}, this);

				// If different element
				if(this.lastActive.length && this.active.length && changed){
					console.log('changing');
					this.tooltip.pivot();
					this.stop();
					this.render(false, this.options.hoverAnimationDuration);
				}

				// if Leaving
				if (this.lastActive.length && !this.active.length){
					console.log('leaving');
					this.tooltip.pivot();
					this.stop();
					this.render(false, this.options.hoverAnimationDuration);
				}

			}	

			// Remember Last Active
			
			this.lastActive = this.active;
		},
		// Calculate the base point for the bar.
		// If the scale has a 0 point, use that as the base
		// If the scale min and max are both positive, use the bottom as a base
		// If the scale min and max are both negative, use the top as a base
		calculateBarBase: function() {
			var base = this.scale.endPoint;
			
			if (this.scale.beginAtZero || ((this.scale.min <= 0 && this.scale.max >= 0) || (this.scale.min >= 0 && this.scale.max <= 0)))
			{
				base = this.scale.calculateY(0);
				base += this.options.scaleGridLineWidth;
			}
			else if (this.scale.min < 0 && this.scale.max < 0)
			{
				// All values are negative. Use the top as the base
				base = this.scale.startPoint;
			}
			
			return base;
		},
		update : function(){

			this.scale.update();

			this.eachBars(function(bar, index, datasetIndex){
				helpers.extend(bar, {
					width : this.scale.calculateBarWidth(this.data.datasets.length),
					x: this.scale.calculateBarX(this.data.datasets.length, datasetIndex, index),
					y: this.scale.calculateY(this.data.datasets[datasetIndex].data[index]),
					value : this.data.datasets[datasetIndex].data[index],
					label : this.data.labels[index],
					datasetLabel: this.data.datasets[datasetIndex].label,
					borderColor : this.data.datasets[datasetIndex].borderColor,
					borderWidth : this.data.datasets[datasetIndex].borderWidth,
					backgroundColor : this.data.datasets[datasetIndex].backgroundColor,
					_datasetIndex: datasetIndex,
					_index: index,
					_start: undefined
				});
			}, this);

			this.render();
		},
		eachBars : function(callback){
			helpers.each(this.data.datasets,function(dataset, datasetIndex){
				helpers.each(dataset.metaData, callback, this, datasetIndex);
			},this);
		},
		eachValue : function(callback){
			helpers.each(this.data.datasets,function(dataset, datasetIndex){
				helpers.each(dataset.data, callback, this, datasetIndex);
			},this);
		},
		getBarsAtEvent : function(e){
			var barsArray = [],
				eventPosition = helpers.getRelativePosition(e),
				datasetIterator = function(dataset){
					barsArray.push(dataset.metaData[elementIndex]);
				},
				elementIndex;

			for (var datasetIndex = 0; datasetIndex < this.data.datasets.length; datasetIndex++) {
				for (elementIndex = 0; elementIndex < this.data.datasets[datasetIndex].metaData.length; elementIndex++) {
					if (this.data.datasets[datasetIndex].metaData[elementIndex].inRange(eventPosition.x,eventPosition.y)){
						helpers.each(this.data.datasets, datasetIterator);
					}
				}
			}

			return barsArray.length ? barsArray : [];
		},
		// Get the single bar that was clicked on
		// @return : An object containing the dataset index and bar index of the matching bar. Also contains the rectangle that was drawn
		getBarAtEvent : function(e) {
			var bar = [];
			var eventPosition = helpers.getRelativePosition(e);
			
			for (var datasetIndex = 0; datasetIndex < this.data.datasets.length; ++datasetIndex) {
				for (var elementIndex = 0; elementIndex < this.data.datasets[datasetIndex].metaData.length; ++elementIndex) {
					if (this.data.datasets[datasetIndex].metaData[elementIndex].inRange(eventPosition.x, eventPosition.y)) {
						bar.push(this.data.datasets[datasetIndex].metaData[elementIndex]);
						return bar;
					}
				}
			}
			
			return [];
		},
		buildScale : function(labels){
			var self = this;

			var dataTotal = function(){
				var values = [];
				self.eachValue(function(value){
					values.push(value);
				});
				return values;
			};

			var scaleOptions = {
				templateString : this.options.scaleLabel,
				height : this.chart.height,
				width : this.chart.width,
				ctx : this.chart.ctx,
				textColor : this.options.scaleFontColor,
				fontSize : this.options.scaleFontSize,
				fontStyle : this.options.scaleFontStyle,
				fontFamily : this.options.scaleFontFamily,
				valuesCount : labels.length,
				beginAtZero : this.options.scaleBeginAtZero,
				integersOnly : this.options.scaleIntegersOnly,
				calculateYRange: function(currentHeight){
					var updatedRanges = helpers.calculateScaleRange(
						dataTotal(),
						currentHeight,
						this.fontSize,
						this.beginAtZero,
						this.integersOnly
					);
					helpers.extend(this, updatedRanges);
				},
				xLabels : labels,
				font : helpers.fontString(this.options.scaleFontSize, this.options.scaleFontStyle, this.options.scaleFontFamily),
				lineWidth : this.options.scaleLineWidth,
				lineColor : this.options.scaleLineColor,
				showHorizontalLines : this.options.scaleShowHorizontalLines,
				showVerticalLines : this.options.scaleShowVerticalLines,
				gridLineWidth : (this.options.scaleShowGridLines) ? this.options.scaleGridLineWidth : 0,
				gridLineColor : (this.options.scaleShowGridLines) ? this.options.scaleGridLineColor : "rgba(0,0,0,0)",
				padding : (this.options.showScale) ? 0 : this.options.borderWidth,
				showLabels : this.options.scaleShowLabels,
				display : this.options.showScale
			};

			if (this.options.scaleOverride){
				helpers.extend(scaleOptions, {
					calculateYRange: helpers.noop,
					steps: this.options.scaleSteps,
					stepValue: this.options.scaleStepWidth,
					min: this.options.scaleStartValue,
					max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
				});
			}

			this.scale = new this.ScaleClass(scaleOptions);
		},
		// This should be incorportated into the init as something like a default value. "Reflow" seems like a weird word for a fredraw function
		/*reflow : function(){
			helpers.extend(this.BarClass.prototype,{
				y: this.calculateBarBase(), // so that we animate from the baseline
				base : this.calculateBarBase()
			});
			var newScaleProps = helpers.extend({
				height : this.chart.height,
				width : this.chart.width
			});
			this.scale.update(newScaleProps);
		},*/
		draw : function(ease){

			var easingDecimal = ease || 1;
			this.clear();

			this.scale.draw(easingDecimal);

			//Draw all the bars for each dataset
			this.eachBars(function(bar, index, datasetIndex){
				if (bar.hasValue()){
					// Update the bar basepoint
					bar.base = this.calculateBarBase();
					//Transition 
					bar.transition(easingDecimal).draw();
				}
			}, this);

			// Finally draw the tooltip
			this.tooltip.transition(easingDecimal).draw();
		}
	});


}).call(this);

(function(){
	"use strict";

	var root = this,
		Chart = root.Chart,
		//Cache a local reference to Chart.helpers
		helpers = Chart.helpers;

	var defaultConfig = {
		//Boolean - Whether we should show a stroke on each segment
		segmentShowStroke : true,

		//String - The colour of each segment stroke
		segmentStrokeColor : "#fff",

		//Number - The width of each segment stroke
		segmentStrokeWidth : 2,

		//The percentage of the chart that we cut out of the middle.
		percentageInnerCutout : 50,

		//Number - Amount of animation steps
		animationSteps : 100,

		//String - Animation easing effect
		animationEasing : "easeOutBounce",

		//Boolean - Whether we animate the rotation of the Doughnut
		animateRotate : true,

		//Boolean - Whether we animate scaling the Doughnut from the centre
		animateScale : false,

		//String - A legend template
		legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<segments.length; i++){%><li><span style=\"background-color:<%=segments[i].fillColor%>\"></span><%if(segments[i].label){%><%=segments[i].label%><%}%></li><%}%></ul>"

	};

	Chart.Type.extend({
		//Passing in a name registers this chart in the Chart namespace
		name: "Doughnut",
		//Providing a defaults will also register the deafults in the chart namespace
		defaults : defaultConfig,
		//Initialize is fired when the chart is initialized - Data is passed in as a parameter
		//Config is automatically merged by the core of Chart.js, and is available at this.options
		initialize:  function(data){

			// Save data as a source for updating of values & methods
			this.data = data;

			//Declare segments as a static property to prevent inheriting across the Chart type prototype
			this.segments = [];
			this.outerRadius = (helpers.min([this.chart.width,this.chart.height]) -	this.options.segmentStrokeWidth/2)/2;

			this.SegmentArc = Chart.Arc.extend({
				ctx : this.chart.ctx,
				x : this.chart.width/2,
				y : this.chart.height/2
			});

			//Set up tooltip events on the chart
			if (this.options.showTooltips){
				helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
					var activeSegments = (evt.type !== 'mouseout') ? this.getSegmentsAtEvent(evt) : [];

					helpers.each(this.segments,function(segment){
						segment.restore(["fillColor"]);
					});
					helpers.each(activeSegments,function(activeSegment){
						activeSegment.fillColor = activeSegment.highlightColor;
					});
					this.showTooltip(activeSegments);
				});
			}
			this.calculateTotal(data);

			helpers.each(data,function(datapoint, index){
				if (!datapoint.color) {
					datapoint.color = 'hsl(' + (360 * index / data.length) + ', 100%, 50%)';
				}
				this.addData(datapoint, index, true);
			},this);

			this.render();
		},
		getSegmentsAtEvent : function(e){
			var segmentsArray = [];

			var location = helpers.getRelativePosition(e);

			helpers.each(this.segments,function(segment){
				if (segment.inRange(location.x,location.y)) segmentsArray.push(segment);
			},this);
			return segmentsArray;
		},
		addData : function(segment, atIndex, silent){
			var index = atIndex || this.segments.length;
			this.segments.splice(index, 0, new this.SegmentArc({
				value : segment.value,
				outerRadius : (this.options.animateScale) ? 0 : this.outerRadius,
				innerRadius : (this.options.animateScale) ? 0 : (this.outerRadius/100) * this.options.percentageInnerCutout,
				fillColor : segment.color,
				highlightColor : segment.highlight || segment.color,
				showStroke : this.options.segmentShowStroke,
				strokeWidth : this.options.segmentStrokeWidth,
				strokeColor : this.options.segmentStrokeColor,
				startAngle : Math.PI * 1.5,
				circumference : (this.options.animateRotate) ? 0 : this.calculateCircumference(segment.value),
				label : segment.label
			}));
			if (!silent){
				this.reflow();
				this.update();
			}
		},
		calculateCircumference : function(value) {
			if ( this.total > 0 ) {
				return (Math.PI*2)*(value / this.total);
			} else {
				return 0;
			}
		},
		calculateTotal : function(data){
			this.total = 0;
			helpers.each(data,function(segment){
				this.total += Math.abs(segment.value);
			},this);
		},
		update : function(){

			// Map new data to data points
			if(this.data.length == this.segments.length){
				helpers.each(this.data, function(segment, i){
					helpers.extend(this.segments[i], {
						value : segment.value,
						fillColor : segment.color,
						highlightColor : segment.highlight || segment.color,
						showStroke : this.options.segmentShowStroke,
						strokeWidth : this.options.segmentStrokeWidth,
						strokeColor : this.options.segmentStrokeColor,
						label : segment.label
					});
				}, this);
			} else{
				// Data size changed without properly inserting, just redraw the chart
				this.initialize(this.data);
			}

			this.calculateTotal(this.segments);

			// Reset any highlight colours before updating.
			helpers.each(this.activeElements, function(activeElement){
				activeElement.restore(['fillColor']);
			});

			helpers.each(this.segments,function(segment){
				segment.save();
			});
			this.render();
		},

		removeData: function(atIndex){
			var indexToDelete = (helpers.isNumber(atIndex)) ? atIndex : this.segments.length-1;
			this.segments.splice(indexToDelete, 1);
			this.reflow();
			this.update();
		},

		reflow : function(){
			helpers.extend(this.SegmentArc.prototype,{
				x : this.chart.width/2,
				y : this.chart.height/2
			});
			this.outerRadius = (helpers.min([this.chart.width,this.chart.height]) -	this.options.segmentStrokeWidth/2)/2;
			helpers.each(this.segments, function(segment){
				segment.update({
					outerRadius : this.outerRadius,
					innerRadius : (this.outerRadius/100) * this.options.percentageInnerCutout
				});
			}, this);
		},
		draw : function(easeDecimal){
			var animDecimal = (easeDecimal) ? easeDecimal : 1;
			this.clear();
			helpers.each(this.segments,function(segment,index){
				segment.transition({
					circumference : this.calculateCircumference(segment.value),
					outerRadius : this.outerRadius,
					innerRadius : (this.outerRadius/100) * this.options.percentageInnerCutout
				},animDecimal);

				segment.endAngle = segment.startAngle + segment.circumference;

				segment.draw();
				if (index === 0){
					segment.startAngle = Math.PI * 1.5;
				}
				//Check to see if it's the last segment, if not get the next and update the start angle
				if (index < this.segments.length-1){
					this.segments[index+1].startAngle = segment.endAngle;
				}
			},this);

		}
	});

	Chart.types.Doughnut.extend({
		name : "Pie",
		defaults : helpers.merge(defaultConfig,{percentageInnerCutout : 0})
	});

}).call(this);

(function(){
	"use strict";

	var root = this,
		Chart = root.Chart,
		helpers = Chart.helpers;

	var defaultConfig = {

		///Boolean - Whether grid lines are shown across the chart
		scaleShowGridLines : true,

		//String - Colour of the grid lines
		scaleGridLineColor : "rgba(0,0,0,.05)",

		//Number - Width of the grid lines
		scaleGridLineWidth : 1,

		//Boolean - Whether to show horizontal lines (except X axis)
		scaleShowHorizontalLines: true,

		//Boolean - Whether to show vertical lines (except Y axis)
		scaleShowVerticalLines: true,

		//Boolean - Whether the line is curved between points
		bezierCurve : true,

		//Number - Tension of the bezier curve between points
		bezierCurveTension : 0.4,

		//Boolean - Whether to show a dot for each point
		pointDot : true,

		//Number - Radius of each point dot in pixels
		pointDotRadius : 4,

		//Number - Pixel width of point dot stroke
		pointDotStrokeWidth : 1,

		//Number - amount extra to add to the radius to cater for hit detection outside the drawn point
		pointHitDetectionRadius : 20,

		//Boolean - Whether to show a stroke for datasets
		datasetStroke : true,

		//Number - Pixel width of dataset stroke
		datasetStrokeWidth : 2,

		//Boolean - Whether to fill the dataset with a colour
		datasetFill : true,

		//String - A legend template
		legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span style=\"background-color:<%=datasets[i].strokeColor%>\"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>",

		//Boolean - Whether to horizontally center the label and point dot inside the grid
		offsetGridLines : false

	};


	Chart.Type.extend({
		name: "Line",
		defaults : defaultConfig,
		initialize:  function(data){
			// Save data as a source for updating of values & methods
			this.data = data;

			//Declare the extension of the default point, to cater for the options passed in to the constructor
			this.PointClass = Chart.Point.extend({
				offsetGridLines : this.options.offsetGridLines,
				strokeWidth : this.options.pointDotStrokeWidth,
				radius : this.options.pointDotRadius,
				display: this.options.pointDot,
				hitDetectionRadius : this.options.pointHitDetectionRadius,
				ctx : this.chart.ctx,
				inRange : function(mouseX){
					return (Math.pow(mouseX-this.x, 2) < Math.pow(this.radius + this.hitDetectionRadius,2));
				}
			});

			this.datasets = [];

			//Set up tooltip events on the chart
			if (this.options.showTooltips){
				helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
					var activePoints = (evt.type !== 'mouseout') ? this.getPointsAtEvent(evt) : [];
					this.eachPoints(function(point){
						point.restore(['fillColor', 'strokeColor']);
					});
					helpers.each(activePoints, function(activePoint){
						activePoint.fillColor = activePoint.highlightFill;
						activePoint.strokeColor = activePoint.highlightStroke;
					});
					this.showTooltip(activePoints);
				});
			}

			//Iterate through each of the datasets, and build this into a property of the chart
			helpers.each(data.datasets,function(dataset){

				var datasetObject = {
					label : dataset.label || null,
					fillColor : dataset.fillColor,
					strokeColor : dataset.strokeColor,
					pointColor : dataset.pointColor,
					pointStrokeColor : dataset.pointStrokeColor,
					points : []
				};

				this.datasets.push(datasetObject);


				helpers.each(dataset.data,function(dataPoint,index){
					//Add a new point for each piece of data, passing any required data to draw.
					datasetObject.points.push(new this.PointClass({
						value : dataPoint,
						label : data.labels[index],
						datasetLabel: dataset.label,
						strokeColor : dataset.pointStrokeColor,
						fillColor : dataset.pointColor,
						highlightFill : dataset.pointHighlightFill || dataset.pointColor,
						highlightStroke : dataset.pointHighlightStroke || dataset.pointStrokeColor
					}));
				},this);

				this.buildScale(data.labels);


				this.eachPoints(function(point, index){
					helpers.extend(point, {
						x: this.scale.calculateX(index),
						y: this.scale.endPoint
					});
					point.save();
				}, this);

			},this);


			this.render();
		},
		update : function(){
			//Iterate through each of the datasets, and build this into a property of the chart
			helpers.each(this.data.datasets,function(dataset,datasetIndex){

				helpers.extend(this.datasets[datasetIndex], {
					label : dataset.label || null,
					fillColor : dataset.fillColor,
					strokeColor : dataset.strokeColor,
					pointColor : dataset.pointColor,
					pointStrokeColor : dataset.pointStrokeColor,
				});

				helpers.each(dataset.data,function(dataPoint,index){
					helpers.extend(this.datasets[datasetIndex].points[index], {
						value : dataPoint,
						label : this.data.labels[index],
						datasetLabel: dataset.label,
						strokeColor : dataset.pointStrokeColor,
						fillColor : dataset.pointColor,
						highlightFill : dataset.pointHighlightFill || dataset.pointColor,
						highlightStroke : dataset.pointHighlightStroke || dataset.pointStrokeColor
					});
				},this);

			},this);

			this.scale.update();
			// Reset any highlight colours before updating.
			helpers.each(this.activeElements, function(activeElement){
				activeElement.restore(['fillColor', 'strokeColor']);
			});
			this.eachPoints(function(point){
				point.save();
			});
			this.render();
		},
		eachPoints : function(callback){
			helpers.each(this.datasets,function(dataset){
				helpers.each(dataset.points,callback,this);
			},this);
		},
		getPointsAtEvent : function(e){
			var pointsArray = [],
				eventPosition = helpers.getRelativePosition(e);
			helpers.each(this.datasets,function(dataset){
				helpers.each(dataset.points,function(point){
					if (point.inRange(eventPosition.x,eventPosition.y)) pointsArray.push(point);
				});
			},this);
			return pointsArray;
		},
		buildScale : function(labels){
			var self = this;

			var dataTotal = function(){
				var values = [];
				self.eachPoints(function(point){
					values.push(point.value);
				});

				return values;
			};

			var scaleOptions = {
				templateString : this.options.scaleLabel,
				height : this.chart.height,
				width : this.chart.width,
				ctx : this.chart.ctx,
				textColor : this.options.scaleFontColor,
				offsetGridLines : this.options.offsetGridLines,
				fontSize : this.options.scaleFontSize,
				fontStyle : this.options.scaleFontStyle,
				fontFamily : this.options.scaleFontFamily,
				valuesCount : labels.length,
				beginAtZero : this.options.scaleBeginAtZero,
				integersOnly : this.options.scaleIntegersOnly,
				calculateYRange : function(currentHeight){
					var updatedRanges = helpers.calculateScaleRange(
						dataTotal(),
						currentHeight,
						this.fontSize,
						this.beginAtZero,
						this.integersOnly
					);
					helpers.extend(this, updatedRanges);
				},
				xLabels : labels,
				font : helpers.fontString(this.options.scaleFontSize, this.options.scaleFontStyle, this.options.scaleFontFamily),
				lineWidth : this.options.scaleLineWidth,
				lineColor : this.options.scaleLineColor,
				showHorizontalLines : this.options.scaleShowHorizontalLines,
				showVerticalLines : this.options.scaleShowVerticalLines,
				gridLineWidth : (this.options.scaleShowGridLines) ? this.options.scaleGridLineWidth : 0,
				gridLineColor : (this.options.scaleShowGridLines) ? this.options.scaleGridLineColor : "rgba(0,0,0,0)",
				padding: (this.options.showScale) ? 0 : this.options.pointDotRadius + this.options.pointDotStrokeWidth,
				showLabels : this.options.scaleShowLabels,
				display : this.options.showScale
			};

			if (this.options.scaleOverride){
				helpers.extend(scaleOptions, {
					calculateYRange: helpers.noop,
					steps: this.options.scaleSteps,
					stepValue: this.options.scaleStepWidth,
					min: this.options.scaleStartValue,
					max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
				});
			}


			this.scale = new Chart.Scale(scaleOptions);
		},
		addData : function(valuesArray,label){
			//Map the values array for each of the datasets

			helpers.each(valuesArray,function(value,datasetIndex){
				//Add a new point for each piece of data, passing any required data to draw.
				this.datasets[datasetIndex].points.push(new this.PointClass({
					value : value,
					label : label,
					datasetLabel: this.datasets[datasetIndex].label,
					x: this.scale.calculateX(this.scale.valuesCount+1),
					y: this.scale.endPoint,
					strokeColor : this.datasets[datasetIndex].pointStrokeColor,
					fillColor : this.datasets[datasetIndex].pointColor
				}));
			},this);

			this.scale.addXLabel(label);
			//Then re-render the chart.
			this.update();
		},
		removeData : function(){
			this.scale.removeXLabel();
			//Then re-render the chart.
			helpers.each(this.datasets,function(dataset){
				dataset.points.shift();
			},this);
			this.update();
		},
		reflow : function(){
			var newScaleProps = helpers.extend({
				height : this.chart.height,
				width : this.chart.width
			});
			this.scale.update(newScaleProps);
		},
		draw : function(ease){
			var easingDecimal = ease || 1;
			this.clear();

			var ctx = this.chart.ctx;

			// Some helper methods for getting the next/prev points
			var hasValue = function(item){
				return item.value !== null;
			},
			nextPoint = function(point, collection, index){
				return helpers.findNextWhere(collection, hasValue, index) || point;
			},
			previousPoint = function(point, collection, index){
				return helpers.findPreviousWhere(collection, hasValue, index) || point;
			};

			this.scale.draw(easingDecimal);


			helpers.each(this.datasets,function(dataset){
				var pointsWithValues = helpers.where(dataset.points, hasValue);

				//Transition each point first so that the line and point drawing isn't out of sync
				//We can use this extra loop to calculate the control points of this dataset also in this loop

				helpers.each(dataset.points, function(point, index){
					if (point.hasValue()){
						point.transition({
							y : this.scale.calculateY(point.value),
							x : this.scale.calculateX(index)
						}, easingDecimal);
					}
				},this);


				// Control points need to be calculated in a seperate loop, because we need to know the current x/y of the point
				// This would cause issues when there is no animation, because the y of the next point would be 0, so beziers would be skewed
				if (this.options.bezierCurve){
					helpers.each(pointsWithValues, function(point, index){
						var tension = (index > 0 && index < pointsWithValues.length - 1) ? this.options.bezierCurveTension : 0;
						point.controlPoints = helpers.splineCurve(
							previousPoint(point, pointsWithValues, index),
							point,
							nextPoint(point, pointsWithValues, index),
							tension
						);

						// Prevent the bezier going outside of the bounds of the graph

						// Cap puter bezier handles to the upper/lower scale bounds
						if (point.controlPoints.outer.y > this.scale.endPoint){
							point.controlPoints.outer.y = this.scale.endPoint;
						}
						else if (point.controlPoints.outer.y < this.scale.startPoint){
							point.controlPoints.outer.y = this.scale.startPoint;
						}

						// Cap inner bezier handles to the upper/lower scale bounds
						if (point.controlPoints.inner.y > this.scale.endPoint){
							point.controlPoints.inner.y = this.scale.endPoint;
						}
						else if (point.controlPoints.inner.y < this.scale.startPoint){
							point.controlPoints.inner.y = this.scale.startPoint;
						}
					},this);
				}


				//Draw the line between all the points
				ctx.lineWidth = this.options.datasetStrokeWidth;
				ctx.strokeStyle = dataset.strokeColor;
				ctx.beginPath();

				helpers.each(pointsWithValues, function(point, index){
					if (index === 0){
						ctx.moveTo(point.x, point.y);
					}
					else{
						if(this.options.bezierCurve){
							var previous = previousPoint(point, pointsWithValues, index);

							ctx.bezierCurveTo(
								previous.controlPoints.outer.x,
								previous.controlPoints.outer.y,
								point.controlPoints.inner.x,
								point.controlPoints.inner.y,
								point.x,
								point.y
							);
						}
						else{
							ctx.lineTo(point.x,point.y);
						}
					}
				}, this);

				ctx.stroke();

				if (this.options.datasetFill && pointsWithValues.length > 0){
					//Round off the line by going to the base of the chart, back to the start, then fill.
					ctx.lineTo(pointsWithValues[pointsWithValues.length - 1].x, this.scale.endPoint);
					ctx.lineTo(pointsWithValues[0].x, this.scale.endPoint);
					ctx.fillStyle = dataset.fillColor;
					ctx.closePath();
					ctx.fill();
				}

				//Now draw the points over the line
				//A little inefficient double looping, but better than the line
				//lagging behind the point positions
				helpers.each(pointsWithValues,function(point){
					point.draw();
				});
			},this);
		}
	});


}).call(this);

(function(){
	"use strict";

	var root = this,
		Chart = root.Chart,
		//Cache a local reference to Chart.helpers
		helpers = Chart.helpers;

	var defaultConfig = {
		//Boolean - Show a backdrop to the scale label
		scaleShowLabelBackdrop : true,

		//String - The colour of the label backdrop
		scaleBackdropColor : "rgba(255,255,255,0.75)",

		// Boolean - Whether the scale should begin at zero
		scaleBeginAtZero : true,

		//Number - The backdrop padding above & below the label in pixels
		scaleBackdropPaddingY : 2,

		//Number - The backdrop padding to the side of the label in pixels
		scaleBackdropPaddingX : 2,

		//Boolean - Show line for each value in the scale
		scaleShowLine : true,

		//Boolean - Stroke a line around each segment in the chart
		segmentShowStroke : true,

		//String - The colour of the stroke on each segment.
		segmentStrokeColor : "#fff",

		//Number - The width of the stroke value in pixels
		segmentStrokeWidth : 2,

		//Number - Amount of animation steps
		animationSteps : 100,

		//String - Animation easing effect.
		animationEasing : "easeOutBounce",

		//Boolean - Whether to animate the rotation of the chart
		animateRotate : true,

		//Boolean - Whether to animate scaling the chart from the centre
		animateScale : false,

		//String - A legend template
		legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<segments.length; i++){%><li><span style=\"background-color:<%=segments[i].fillColor%>\"></span><%if(segments[i].label){%><%=segments[i].label%><%}%></li><%}%></ul>"
	};


	Chart.Type.extend({
		//Passing in a name registers this chart in the Chart namespace
		name: "PolarArea",
		//Providing a defaults will also register the deafults in the chart namespace
		defaults : defaultConfig,
		//Initialize is fired when the chart is initialized - Data is passed in as a parameter
		//Config is automatically merged by the core of Chart.js, and is available at this.options
		initialize:  function(data){
			// Save data as a source for updating of values & methods
			this.data = data;

			this.segments = [];
			//Declare segment class as a chart instance specific class, so it can share props for this instance
			this.SegmentArc = Chart.Arc.extend({
				showStroke : this.options.segmentShowStroke,
				strokeWidth : this.options.segmentStrokeWidth,
				strokeColor : this.options.segmentStrokeColor,
				ctx : this.chart.ctx,
				innerRadius : 0,
				x : this.chart.width/2,
				y : this.chart.height/2
			});
			this.scale = new Chart.RadialScale({
				display: this.options.showScale,
				fontStyle: this.options.scaleFontStyle,
				fontSize: this.options.scaleFontSize,
				fontFamily: this.options.scaleFontFamily,
				fontColor: this.options.scaleFontColor,
				showLabels: this.options.scaleShowLabels,
				showLabelBackdrop: this.options.scaleShowLabelBackdrop,
				backdropColor: this.options.scaleBackdropColor,
				backdropPaddingY : this.options.scaleBackdropPaddingY,
				backdropPaddingX: this.options.scaleBackdropPaddingX,
				lineWidth: (this.options.scaleShowLine) ? this.options.scaleLineWidth : 0,
				lineColor: this.options.scaleLineColor,
				lineArc: true,
				width: this.chart.width,
				height: this.chart.height,
				xCenter: this.chart.width/2,
				yCenter: this.chart.height/2,
				ctx : this.chart.ctx,
				templateString: this.options.scaleLabel,
				valuesCount: data.length
			});

			this.updateScaleRange(data);

			this.scale.update();

			helpers.each(data,function(segment,index){
				this.addData(segment,index,true);
			},this);

			//Set up tooltip events on the chart
			if (this.options.showTooltips){
				helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
					var activeSegments = (evt.type !== 'mouseout') ? this.getSegmentsAtEvent(evt) : [];
					helpers.each(this.segments,function(segment){
						segment.restore(["fillColor"]);
					});
					helpers.each(activeSegments,function(activeSegment){
						activeSegment.fillColor = activeSegment.highlightColor;
					});
					this.showTooltip(activeSegments);
				});
			}

			this.render();
		},
		getSegmentsAtEvent : function(e){
			var segmentsArray = [];

			var location = helpers.getRelativePosition(e);

			helpers.each(this.segments,function(segment){
				if (segment.inRange(location.x,location.y)) segmentsArray.push(segment);
			},this);
			return segmentsArray;
		},
		addData : function(segment, atIndex, silent){
			var index = atIndex || this.segments.length;

			this.segments.splice(index, 0, new this.SegmentArc({
				fillColor: segment.color,
				highlightColor: segment.highlight || segment.color,
				label: segment.label,
				value: segment.value,
				outerRadius: (this.options.animateScale) ? 0 : this.scale.calculateCenterOffset(segment.value),
				circumference: (this.options.animateRotate) ? 0 : this.scale.getCircumference(),
				startAngle: Math.PI * 1.5
			}));
			if (!silent){
				this.reflow();
				this.update();
			}
		},
		removeData: function(atIndex){
			var indexToDelete = (helpers.isNumber(atIndex)) ? atIndex : this.segments.length-1;
			this.segments.splice(indexToDelete, 1);
			this.reflow();
			this.update();
		},
		calculateTotal: function(data){
			this.total = 0;
			helpers.each(data,function(segment){
				this.total += segment.value;
			},this);
			this.scale.valuesCount = this.segments.length;
		},
		updateScaleRange: function(datapoints){
			var valuesArray = [];
			helpers.each(datapoints,function(segment){
				valuesArray.push(segment.value);
			});

			var scaleSizes = (this.options.scaleOverride) ?
				{
					steps: this.options.scaleSteps,
					stepValue: this.options.scaleStepWidth,
					min: this.options.scaleStartValue,
					max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
				} :
				helpers.calculateScaleRange(
					valuesArray,
					helpers.min([this.chart.width, this.chart.height])/2,
					this.options.scaleFontSize,
					this.options.scaleBeginAtZero,
					this.options.scaleIntegersOnly
				);

			helpers.extend(
				this.scale,
				scaleSizes,
				{
					size: helpers.min([this.chart.width, this.chart.height]),
					xCenter: this.chart.width/2,
					yCenter: this.chart.height/2
				}
			);

		},
		update : function(){

			// Map new data to data points
			if(this.data.length == this.segments.length){
				helpers.each(this.data, function(segment, i){
					helpers.extend(this.segments[i], {
						fillColor: segment.color,
						highlightColor: segment.highlight || segment.color,
						label: segment.label,
						value: segment.value,
					});
				},this);
			} else{
				// Data size changed without properly inserting, just redraw the chart
				this.initialize(this.data);
			}

			this.calculateTotal(this.segments);

			helpers.each(this.segments,function(segment){
				segment.save();
			});
			
			this.reflow();
			this.render();
		},
		reflow : function(){
			helpers.extend(this.SegmentArc.prototype,{
				x : this.chart.width/2,
				y : this.chart.height/2
			});
			this.updateScaleRange(this.segments);
			this.scale.update();

			helpers.extend(this.scale,{
				xCenter: this.chart.width/2,
				yCenter: this.chart.height/2
			});

			helpers.each(this.segments, function(segment){
				segment.update({
					outerRadius : this.scale.calculateCenterOffset(segment.value)
				});
			}, this);

		},
		draw : function(ease){
			var easingDecimal = ease || 1;
			//Clear & draw the canvas
			this.clear();
			helpers.each(this.segments,function(segment, index){
				segment.transition({
					circumference : this.scale.getCircumference(),
					outerRadius : this.scale.calculateCenterOffset(segment.value)
				},easingDecimal);

				segment.endAngle = segment.startAngle + segment.circumference;

				// If we've removed the first segment we need to set the first one to
				// start at the top.
				if (index === 0){
					segment.startAngle = Math.PI * 1.5;
				}

				//Check to see if it's the last segment, if not get the next and update the start angle
				if (index < this.segments.length - 1){
					this.segments[index+1].startAngle = segment.endAngle;
				}
				segment.draw();
			}, this);
			this.scale.draw();
		}
	});

}).call(this);

(function(){
	"use strict";

	var root = this,
		Chart = root.Chart,
		helpers = Chart.helpers;



	Chart.Type.extend({
		name: "Radar",
		defaults:{
			//Boolean - Whether to show lines for each scale point
			scaleShowLine : true,

			//Boolean - Whether we show the angle lines out of the radar
			angleShowLineOut : true,

			//Boolean - Whether to show labels on the scale
			scaleShowLabels : false,

			// Boolean - Whether the scale should begin at zero
			scaleBeginAtZero : true,

			//String - Colour of the angle line
			angleLineColor : "rgba(0,0,0,.1)",

			//Number - Pixel width of the angle line
			angleLineWidth : 1,

			//String - Point label font declaration
			pointLabelFontFamily : "'Arial'",

			//String - Point label font weight
			pointLabelFontStyle : "normal",

			//Number - Point label font size in pixels
			pointLabelFontSize : 10,

			//String - Point label font colour
			pointLabelFontColor : "#666",

			//Boolean - Whether to show a dot for each point
			pointDot : true,

			//Number - Radius of each point dot in pixels
			pointDotRadius : 3,

			//Number - Pixel width of point dot stroke
			pointDotStrokeWidth : 1,

			//Number - amount extra to add to the radius to cater for hit detection outside the drawn point
			pointHitDetectionRadius : 20,

			//Boolean - Whether to show a stroke for datasets
			datasetStroke : true,

			//Number - Pixel width of dataset stroke
			datasetStrokeWidth : 2,

			//Boolean - Whether to fill the dataset with a colour
			datasetFill : true,

			//String - A legend template
			legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span style=\"background-color:<%=datasets[i].strokeColor%>\"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>"

		},

		initialize: function(data){
			// Save data as a source for updating of values & methods
			this.data = data;

			this.PointClass = Chart.Point.extend({
				strokeWidth : this.options.pointDotStrokeWidth,
				radius : this.options.pointDotRadius,
				display: this.options.pointDot,
				hitDetectionRadius : this.options.pointHitDetectionRadius,
				ctx : this.chart.ctx
			});

			this.datasets = [];

			this.buildScale(data);

			//Set up tooltip events on the chart
			if (this.options.showTooltips){
				helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
					var activePointsCollection = (evt.type !== 'mouseout') ? this.getPointsAtEvent(evt) : [];

					this.eachPoints(function(point){
						point.restore(['fillColor', 'strokeColor']);
					});
					helpers.each(activePointsCollection, function(activePoint){
						activePoint.fillColor = activePoint.highlightFill;
						activePoint.strokeColor = activePoint.highlightStroke;
					});

					this.showTooltip(activePointsCollection);
				});
			}

			//Iterate through each of the datasets, and build this into a property of the chart
			helpers.each(data.datasets,function(dataset){

				var datasetObject = {
					label: dataset.label || null,
					fillColor : dataset.fillColor,
					strokeColor : dataset.strokeColor,
					pointColor : dataset.pointColor,
					pointStrokeColor : dataset.pointStrokeColor,
					points : []
				};

				this.datasets.push(datasetObject);

				helpers.each(dataset.data,function(dataPoint,index){
					//Add a new point for each piece of data, passing any required data to draw.
					var pointPosition;
					if (!this.scale.animation){
						pointPosition = this.scale.getPointPosition(index, this.scale.calculateCenterOffset(dataPoint));
					}
					datasetObject.points.push(new this.PointClass({
						value : dataPoint,
						label : data.labels[index],
						datasetLabel: dataset.label,
						x: (this.options.animation) ? this.scale.xCenter : pointPosition.x,
						y: (this.options.animation) ? this.scale.yCenter : pointPosition.y,
						strokeColor : dataset.pointStrokeColor,
						fillColor : dataset.pointColor,
						highlightFill : dataset.pointHighlightFill || dataset.pointColor,
						highlightStroke : dataset.pointHighlightStroke || dataset.pointStrokeColor
					}));
				},this);

			},this);

			this.render();
		},
		eachPoints : function(callback){
			helpers.each(this.datasets,function(dataset){
				helpers.each(dataset.points,callback,this);
			},this);
		},

		getPointsAtEvent : function(evt){
			var mousePosition = helpers.getRelativePosition(evt),
				fromCenter = helpers.getAngleFromPoint({
					x: this.scale.xCenter,
					y: this.scale.yCenter
				}, mousePosition);

			var anglePerIndex = (Math.PI * 2) /this.scale.valuesCount,
				pointIndex = Math.round((fromCenter.angle - Math.PI * 1.5) / anglePerIndex),
				activePointsCollection = [];

			// If we're at the top, make the pointIndex 0 to get the first of the array.
			if (pointIndex >= this.scale.valuesCount || pointIndex < 0){
				pointIndex = 0;
			}

			if (fromCenter.distance <= this.scale.drawingArea){
				helpers.each(this.datasets, function(dataset){
					activePointsCollection.push(dataset.points[pointIndex]);
				});
			}

			return activePointsCollection;
		},

		buildScale : function(data){
			this.scale = new Chart.RadialScale({
				display: this.options.showScale,
				fontStyle: this.options.scaleFontStyle,
				fontSize: this.options.scaleFontSize,
				fontFamily: this.options.scaleFontFamily,
				fontColor: this.options.scaleFontColor,
				showLabels: this.options.scaleShowLabels,
				showLabelBackdrop: this.options.scaleShowLabelBackdrop,
				backdropColor: this.options.scaleBackdropColor,
				backdropPaddingY : this.options.scaleBackdropPaddingY,
				backdropPaddingX: this.options.scaleBackdropPaddingX,
				lineWidth: (this.options.scaleShowLine) ? this.options.scaleLineWidth : 0,
				lineColor: this.options.scaleLineColor,
				angleLineColor : this.options.angleLineColor,
				angleLineWidth : (this.options.angleShowLineOut) ? this.options.angleLineWidth : 0,
				// Point labels at the edge of each line
				pointLabelFontColor : this.options.pointLabelFontColor,
				pointLabelFontSize : this.options.pointLabelFontSize,
				pointLabelFontFamily : this.options.pointLabelFontFamily,
				pointLabelFontStyle : this.options.pointLabelFontStyle,
				height : this.chart.height,
				width: this.chart.width,
				xCenter: this.chart.width/2,
				yCenter: this.chart.height/2,
				ctx : this.chart.ctx,
				templateString: this.options.scaleLabel,
				labels: data.labels,
				valuesCount: data.datasets[0].data.length
			});

			this.scale.setScaleSize();
			this.updateScaleRange(data.datasets);
			this.scale.buildYLabels();
		},
		updateScaleRange: function(datasets){
			var valuesArray = (function(){
				var totalDataArray = [];
				helpers.each(datasets,function(dataset){
					if (dataset.data){
						totalDataArray = totalDataArray.concat(dataset.data);
					}
					else {
						helpers.each(dataset.points, function(point){
							totalDataArray.push(point.value);
						});
					}
				});
				return totalDataArray;
			})();


			var scaleSizes = (this.options.scaleOverride) ?
				{
					steps: this.options.scaleSteps,
					stepValue: this.options.scaleStepWidth,
					min: this.options.scaleStartValue,
					max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
				} :
				helpers.calculateScaleRange(
					valuesArray,
					helpers.min([this.chart.width, this.chart.height])/2,
					this.options.scaleFontSize,
					this.options.scaleBeginAtZero,
					this.options.scaleIntegersOnly
				);

			helpers.extend(
				this.scale,
				scaleSizes
			);

		},
		addData : function(valuesArray,label){
			//Map the values array for each of the datasets
			this.scale.valuesCount++;
			helpers.each(valuesArray,function(value,datasetIndex){
				var pointPosition = this.scale.getPointPosition(this.scale.valuesCount, this.scale.calculateCenterOffset(value));
				this.datasets[datasetIndex].points.push(new this.PointClass({
					value : value,
					label : label,
					datasetLabel: this.datasets[datasetIndex].label,
					x: pointPosition.x,
					y: pointPosition.y,
					strokeColor : this.datasets[datasetIndex].pointStrokeColor,
					fillColor : this.datasets[datasetIndex].pointColor
				}));
			},this);

			this.scale.labels.push(label);

			this.reflow();

			this.update();
		},
		removeData : function(){
			this.scale.valuesCount--;
			this.scale.labels.shift();
			helpers.each(this.datasets,function(dataset){
				dataset.points.shift();
			},this);
			this.reflow();
			this.update();
		},
		update : function(){
			//Iterate through each of the datasets, and build this into a property of the chart
			helpers.each(this.data.datasets,function(dataset,datasetIndex){

				helpers.extend(this.datasets[datasetIndex], {
					label : dataset.label || null,
					fillColor : dataset.fillColor,
					strokeColor : dataset.strokeColor,
					pointColor : dataset.pointColor,
					pointStrokeColor : dataset.pointStrokeColor,
				});

				helpers.each(dataset.data,function(dataPoint,index){
					helpers.extend(this.datasets[datasetIndex].points[index], {
						value : dataPoint,
						label : this.data.labels[index],
						datasetLabel: dataset.label,
						strokeColor : dataset.pointStrokeColor,
						fillColor : dataset.pointColor,
						highlightFill : dataset.pointHighlightFill || dataset.pointColor,
						highlightStroke : dataset.pointHighlightStroke || dataset.pointStrokeColor
					});
				},this);

			},this);
			
			this.eachPoints(function(point){
				point.save();
			});
			this.reflow();
			this.render();
		},
		reflow: function(){
			helpers.extend(this.scale, {
				width : this.chart.width,
				height: this.chart.height,
				size : helpers.min([this.chart.width, this.chart.height]),
				xCenter: this.chart.width/2,
				yCenter: this.chart.height/2
			});
			this.updateScaleRange(this.datasets);
			this.scale.setScaleSize();
			this.scale.buildYLabels();
		},
		draw : function(ease){
			var easeDecimal = ease || 1,
				ctx = this.chart.ctx;
			this.clear();
			this.scale.draw();

			helpers.each(this.datasets,function(dataset){

				//Transition each point first so that the line and point drawing isn't out of sync
				helpers.each(dataset.points,function(point,index){
					if (point.hasValue()){
						point.transition(this.scale.getPointPosition(index, this.scale.calculateCenterOffset(point.value)), easeDecimal);
					}
				},this);



				//Draw the line between all the points
				ctx.lineWidth = this.options.datasetStrokeWidth;
				ctx.strokeStyle = dataset.strokeColor;
				ctx.beginPath();
				helpers.each(dataset.points,function(point,index){
					if (index === 0){
						ctx.moveTo(point.x,point.y);
					}
					else{
						ctx.lineTo(point.x,point.y);
					}
				},this);
				ctx.closePath();
				ctx.stroke();

				ctx.fillStyle = dataset.fillColor;
				ctx.fill();

				//Now draw the points over the line
				//A little inefficient double looping, but better than the line
				//lagging behind the point positions
				helpers.each(dataset.points,function(point){
					if (point.hasValue()){
						point.draw();
					}
				});

			},this);

		}

	});





}).call(this);

!function e(r,t,n){function a(i,u){if(!t[i]){if(!r[i]){var l="function"==typeof require&&require;if(!u&&l)return l(i,!0);if(s)return s(i,!0);var h=new Error("Cannot find module '"+i+"'");throw h.code="MODULE_NOT_FOUND",h}var o=t[i]={exports:{}};r[i][0].call(o.exports,function(e){var t=r[i][1][e];return a(t?t:e)},o,o.exports,e,r,t,n)}return t[i].exports}for(var s="function"==typeof require&&require,i=0;i<n.length;i++)a(n[i]);return a}({1:[function(e,r,t){!function(){var t=e("color-convert"),n=e("color-string"),a=function(e){if(e instanceof a)return e;if(!(this instanceof a))return new a(e);if(this.values={rgb:[0,0,0],hsl:[0,0,0],hsv:[0,0,0],hwb:[0,0,0],cmyk:[0,0,0,0],alpha:1},"string"==typeof e){var r=n.getRgba(e);if(r)this.setValues("rgb",r);else if(r=n.getHsla(e))this.setValues("hsl",r);else{if(!(r=n.getHwb(e)))throw new Error('Unable to parse color from string "'+e+'"');this.setValues("hwb",r)}}else if("object"==typeof e){var r=e;if(void 0!==r.r||void 0!==r.red)this.setValues("rgb",r);else if(void 0!==r.l||void 0!==r.lightness)this.setValues("hsl",r);else if(void 0!==r.v||void 0!==r.value)this.setValues("hsv",r);else if(void 0!==r.w||void 0!==r.whiteness)this.setValues("hwb",r);else{if(void 0===r.c&&void 0===r.cyan)throw new Error("Unable to parse color from object "+JSON.stringify(e));this.setValues("cmyk",r)}}};a.prototype={rgb:function(e){return this.setSpace("rgb",arguments)},hsl:function(e){return this.setSpace("hsl",arguments)},hsv:function(e){return this.setSpace("hsv",arguments)},hwb:function(e){return this.setSpace("hwb",arguments)},cmyk:function(e){return this.setSpace("cmyk",arguments)},rgbArray:function(){return this.values.rgb},hslArray:function(){return this.values.hsl},hsvArray:function(){return this.values.hsv},hwbArray:function(){return 1!==this.values.alpha?this.values.hwb.concat([this.values.alpha]):this.values.hwb},cmykArray:function(){return this.values.cmyk},rgbaArray:function(){var e=this.values.rgb;return e.concat([this.values.alpha])},hslaArray:function(){var e=this.values.hsl;return e.concat([this.values.alpha])},alpha:function(e){return void 0===e?this.values.alpha:(this.setValues("alpha",e),this)},red:function(e){return this.setChannel("rgb",0,e)},green:function(e){return this.setChannel("rgb",1,e)},blue:function(e){return this.setChannel("rgb",2,e)},hue:function(e){return this.setChannel("hsl",0,e)},saturation:function(e){return this.setChannel("hsl",1,e)},lightness:function(e){return this.setChannel("hsl",2,e)},saturationv:function(e){return this.setChannel("hsv",1,e)},whiteness:function(e){return this.setChannel("hwb",1,e)},blackness:function(e){return this.setChannel("hwb",2,e)},value:function(e){return this.setChannel("hsv",2,e)},cyan:function(e){return this.setChannel("cmyk",0,e)},magenta:function(e){return this.setChannel("cmyk",1,e)},yellow:function(e){return this.setChannel("cmyk",2,e)},black:function(e){return this.setChannel("cmyk",3,e)},hexString:function(){return n.hexString(this.values.rgb)},rgbString:function(){return n.rgbString(this.values.rgb,this.values.alpha)},rgbaString:function(){return n.rgbaString(this.values.rgb,this.values.alpha)},percentString:function(){return n.percentString(this.values.rgb,this.values.alpha)},hslString:function(){return n.hslString(this.values.hsl,this.values.alpha)},hslaString:function(){return n.hslaString(this.values.hsl,this.values.alpha)},hwbString:function(){return n.hwbString(this.values.hwb,this.values.alpha)},keyword:function(){return n.keyword(this.values.rgb,this.values.alpha)},rgbNumber:function(){return this.values.rgb[0]<<16|this.values.rgb[1]<<8|this.values.rgb[2]},luminosity:function(){for(var e=this.values.rgb,r=[],t=0;t<e.length;t++){var n=e[t]/255;r[t]=.03928>=n?n/12.92:Math.pow((n+.055)/1.055,2.4)}return.2126*r[0]+.7152*r[1]+.0722*r[2]},contrast:function(e){var r=this.luminosity(),t=e.luminosity();return r>t?(r+.05)/(t+.05):(t+.05)/(r+.05)},level:function(e){var r=this.contrast(e);return r>=7.1?"AAA":r>=4.5?"AA":""},dark:function(){var e=this.values.rgb,r=(299*e[0]+587*e[1]+114*e[2])/1e3;return 128>r},light:function(){return!this.dark()},negate:function(){for(var e=[],r=0;3>r;r++)e[r]=255-this.values.rgb[r];return this.setValues("rgb",e),this},lighten:function(e){return this.values.hsl[2]+=this.values.hsl[2]*e,this.setValues("hsl",this.values.hsl),this},darken:function(e){return this.values.hsl[2]-=this.values.hsl[2]*e,this.setValues("hsl",this.values.hsl),this},saturate:function(e){return this.values.hsl[1]+=this.values.hsl[1]*e,this.setValues("hsl",this.values.hsl),this},desaturate:function(e){return this.values.hsl[1]-=this.values.hsl[1]*e,this.setValues("hsl",this.values.hsl),this},whiten:function(e){return this.values.hwb[1]+=this.values.hwb[1]*e,this.setValues("hwb",this.values.hwb),this},blacken:function(e){return this.values.hwb[2]+=this.values.hwb[2]*e,this.setValues("hwb",this.values.hwb),this},greyscale:function(){var e=this.values.rgb,r=.3*e[0]+.59*e[1]+.11*e[2];return this.setValues("rgb",[r,r,r]),this},clearer:function(e){return this.setValues("alpha",this.values.alpha-this.values.alpha*e),this},opaquer:function(e){return this.setValues("alpha",this.values.alpha+this.values.alpha*e),this},rotate:function(e){var r=this.values.hsl[0];return r=(r+e)%360,r=0>r?360+r:r,this.values.hsl[0]=r,this.setValues("hsl",this.values.hsl),this},mix:function(e,r){r=1-(null==r?.5:r);for(var t=2*r-1,n=this.alpha()-e.alpha(),a=((t*n==-1?t:(t+n)/(1+t*n))+1)/2,s=1-a,i=this.rgbArray(),u=e.rgbArray(),l=0;l<i.length;l++)i[l]=i[l]*a+u[l]*s;this.setValues("rgb",i);var h=this.alpha()*r+e.alpha()*(1-r);return this.setValues("alpha",h),this},toJSON:function(){return this.rgb()},clone:function(){return new a(this.rgb())}},a.prototype.getValues=function(e){for(var r={},t=0;t<e.length;t++)r[e.charAt(t)]=this.values[e][t];return 1!=this.values.alpha&&(r.a=this.values.alpha),r},a.prototype.setValues=function(e,r){var n={rgb:["red","green","blue"],hsl:["hue","saturation","lightness"],hsv:["hue","saturation","value"],hwb:["hue","whiteness","blackness"],cmyk:["cyan","magenta","yellow","black"]},a={rgb:[255,255,255],hsl:[360,100,100],hsv:[360,100,100],hwb:[360,100,100],cmyk:[100,100,100,100]},s=1;if("alpha"==e)s=r;else if(r.length)this.values[e]=r.slice(0,e.length),s=r[e.length];else if(void 0!==r[e.charAt(0)]){for(var i=0;i<e.length;i++)this.values[e][i]=r[e.charAt(i)];s=r.a}else if(void 0!==r[n[e][0]]){for(var u=n[e],i=0;i<e.length;i++)this.values[e][i]=r[u[i]];s=r.alpha}if(this.values.alpha=Math.max(0,Math.min(1,void 0!==s?s:this.values.alpha)),"alpha"!=e){for(var i=0;i<e.length;i++){var l=Math.max(0,Math.min(a[e][i],this.values[e][i]));this.values[e][i]=Math.round(l)}for(var h in n){h!=e&&(this.values[h]=t[e][h](this.values[e]));for(var i=0;i<h.length;i++){var l=Math.max(0,Math.min(a[h][i],this.values[h][i]));this.values[h][i]=Math.round(l)}}return!0}},a.prototype.setSpace=function(e,r){var t=r[0];return void 0===t?this.getValues(e):("number"==typeof t&&(t=Array.prototype.slice.call(r)),this.setValues(e,t),this)},a.prototype.setChannel=function(e,r,t){return void 0===t?this.values[e][r]:(this.values[e][r]=t,this.setValues(e,this.values[e]),this)},window.Color=r.exports=a}()},{"color-convert":3,"color-string":4}],2:[function(e,t,n){function a(e){var r,t,n,a=e[0]/255,s=e[1]/255,i=e[2]/255,u=Math.min(a,s,i),l=Math.max(a,s,i),h=l-u;return l==u?r=0:a==l?r=(s-i)/h:s==l?r=2+(i-a)/h:i==l&&(r=4+(a-s)/h),r=Math.min(60*r,360),0>r&&(r+=360),n=(u+l)/2,t=l==u?0:.5>=n?h/(l+u):h/(2-l-u),[r,100*t,100*n]}function s(e){var r,t,n,a=e[0],s=e[1],i=e[2],u=Math.min(a,s,i),l=Math.max(a,s,i),h=l-u;return t=0==l?0:h/l*1e3/10,l==u?r=0:a==l?r=(s-i)/h:s==l?r=2+(i-a)/h:i==l&&(r=4+(a-s)/h),r=Math.min(60*r,360),0>r&&(r+=360),n=l/255*1e3/10,[r,t,n]}function i(e){var r=e[0],t=e[1],n=e[2],s=a(e)[0],i=1/255*Math.min(r,Math.min(t,n)),n=1-1/255*Math.max(r,Math.max(t,n));return[s,100*i,100*n]}function u(e){var r,t,n,a,s=e[0]/255,i=e[1]/255,u=e[2]/255;return a=Math.min(1-s,1-i,1-u),r=(1-s-a)/(1-a)||0,t=(1-i-a)/(1-a)||0,n=(1-u-a)/(1-a)||0,[100*r,100*t,100*n,100*a]}function l(e){return X[JSON.stringify(e)]}function h(e){var r=e[0]/255,t=e[1]/255,n=e[2]/255;r=r>.04045?Math.pow((r+.055)/1.055,2.4):r/12.92,t=t>.04045?Math.pow((t+.055)/1.055,2.4):t/12.92,n=n>.04045?Math.pow((n+.055)/1.055,2.4):n/12.92;var a=.4124*r+.3576*t+.1805*n,s=.2126*r+.7152*t+.0722*n,i=.0193*r+.1192*t+.9505*n;return[100*a,100*s,100*i]}function o(e){var r,t,n,a=h(e),s=a[0],i=a[1],u=a[2];return s/=95.047,i/=100,u/=108.883,s=s>.008856?Math.pow(s,1/3):7.787*s+16/116,i=i>.008856?Math.pow(i,1/3):7.787*i+16/116,u=u>.008856?Math.pow(u,1/3):7.787*u+16/116,r=116*i-16,t=500*(s-i),n=200*(i-u),[r,t,n]}function c(e){return J(o(e))}function v(e){var r,t,n,a,s,i=e[0]/360,u=e[1]/100,l=e[2]/100;if(0==u)return s=255*l,[s,s,s];t=.5>l?l*(1+u):l+u-l*u,r=2*l-t,a=[0,0,0];for(var 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Y in W)X[JSON.stringify(W[Y])]=Y},{}],3:[function(e,r,t){var n=e("./conversions"),a=function(){return new h};for(var s in n){a[s+"Raw"]=function(e){return function(r){return"number"==typeof r&&(r=Array.prototype.slice.call(arguments)),n[e](r)}}(s);var i=/(\w+)2(\w+)/.exec(s),u=i[1],l=i[2];a[u]=a[u]||{},a[u][l]=a[s]=function(e){return function(r){"number"==typeof r&&(r=Array.prototype.slice.call(arguments));var t=n[e](r);if("string"==typeof t||void 0===t)return t;for(var a=0;a<t.length;a++)t[a]=Math.round(t[a]);return t}}(s)}var h=function(){this.convs={}};h.prototype.routeSpace=function(e,r){var t=r[0];return void 0===t?this.getValues(e):("number"==typeof t&&(t=Array.prototype.slice.call(r)),this.setValues(e,t))},h.prototype.setValues=function(e,r){return this.space=e,this.convs={},this.convs[e]=r,this},h.prototype.getValues=function(e){var r=this.convs[e];if(!r){var t=this.space,n=this.convs[t];r=a[t][e](n),this.convs[e]=r}return 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"+e[1]+", "+e[2]+", "+r+")"}function g(e,r){if(1>r||e[3]&&e[3]<1)return v(e,r);var t=Math.round(e[0]/255*100),n=Math.round(e[1]/255*100),a=Math.round(e[2]/255*100);return"rgb("+t+"%, "+n+"%, "+a+"%)"}function v(e,r){var t=Math.round(e[0]/255*100),n=Math.round(e[1]/255*100),a=Math.round(e[2]/255*100);return"rgba("+t+"%, "+n+"%, "+a+"%, "+(r||e[3]||1)+")"}function f(e,r){return 1>r||e[3]&&e[3]<1?d(e,r):"hsl("+e[0]+", "+e[1]+"%, "+e[2]+"%)"}function d(e,r){return void 0===r&&(r=void 0!==e[3]?e[3]:1),"hsla("+e[0]+", "+e[1]+"%, "+e[2]+"%, "+r+")"}function b(e,r){return void 0===r&&(r=void 0!==e[3]?e[3]:1),"hwb("+e[0]+", "+e[1]+"%, "+e[2]+"%"+(void 0!==r&&1!==r?", "+r:"")+")"}function p(e){return k[e.slice(0,3)]}function m(e,r,t){return Math.min(Math.max(r,e),t)}function y(e){var r=e.toString(16).toUpperCase();return r.length<2?"0"+r:r}var w=e("color-name");r.exports={getRgba:n,getHsla:a,getRgb:i,getHsl:u,getHwb:s,getAlpha:l,hexString:h,rgbString:o,rgbaString:c,percentString:g,percentaString:v,hslString:f,hslaString:d,hwbString:b,keyword:p};var k={};for(var M in w)k[w[M]]=M},{"color-name":5}],5:[function(e,r,t){r.exports={aliceblue:[240,248,255],antiquewhite:[250,235,215],aqua:[0,255,255],aquamarine:[127,255,212],azure:[240,255,255],beige:[245,245,220],bisque:[255,228,196],black:[0,0,0],blanchedalmond:[255,235,205],blue:[0,0,255],blueviolet:[138,43,226],brown:[165,42,42],burlywood:[222,184,135],cadetblue:[95,158,160],chartreuse:[127,255,0],chocolate:[210,105,30],coral:[255,127,80],cornflowerblue:[100,149,237],cornsilk:[255,248,220],crimson:[220,20,60],cyan:[0,255,255],darkblue:[0,0,139],darkcyan:[0,139,139],darkgoldenrod:[184,134,11],darkgray:[169,169,169],darkgreen:[0,100,0],darkgrey:[169,169,169],darkkhaki:[189,183,107],darkmagenta:[139,0,139],darkolivegreen:[85,107,47],darkorange:[255,140,0],darkorchid:[153,50,204],darkred:[139,0,0],darksalmon:[233,150,122],darkseagreen:[143,188,143],darkslateblue:[72,61,139],darkslategray:[47,79,79],darkslategrey:[47,79,79],darkturquoise:[0,206,209],darkviolet:[148,0,211],deeppink:[255,20,147],deepskyblue:[0,191,255],dimgray:[105,105,105],dimgrey:[105,105,105],dodgerblue:[30,144,255],firebrick:[178,34,34],floralwhite:[255,250,240],forestgreen:[34,139,34],fuchsia:[255,0,255],gainsboro:[220,220,220],ghostwhite:[248,248,255],gold:[255,215,0],goldenrod:[218,165,32],gray:[128,128,128],green:[0,128,0],greenyellow:[173,255,47],grey:[128,128,128],honeydew:[240,255,240],hotpink:[255,105,180],indianred:[205,92,92],indigo:[75,0,130],ivory:[255,255,240],khaki:[240,230,140],lavender:[230,230,250],lavenderblush:[255,240,245],lawngreen:[124,252,0],lemonchiffon:[255,250,205],lightblue:[173,216,230],lightcoral:[240,128,128],lightcyan:[224,255,255],lightgoldenrodyellow:[250,250,210],lightgray:[211,211,211],lightgreen:[144,238,144],lightgrey:[211,211,211],lightpink:[255,182,193],lightsalmon:[255,160,122],lightseagreen:[32,178,170],lightskyblue:[135,206,250],lightslategray:[119,136,153],lightslategrey:[119,136,153],lightsteelblue:[176,196,222],lightyellow:[255,255,224],lime:[0,255,0],limegreen:[50,205,50],linen:[250,240,230],magenta:[255,0,255],maroon:[128,0,0],mediumaquamarine:[102,205,170],mediumblue:[0,0,205],mediumorchid:[186,85,211],mediumpurple:[147,112,219],mediumseagreen:[60,179,113],mediumslateblue:[123,104,238],mediumspringgreen:[0,250,154],mediumturquoise:[72,209,204],mediumvioletred:[199,21,133],midnightblue:[25,25,112],mintcream:[245,255,250],mistyrose:[255,228,225],moccasin:[255,228,181],navajowhite:[255,222,173],navy:[0,0,128],oldlace:[253,245,230],olive:[128,128,0],olivedrab:[107,142,35],orange:[255,165,0],orangered:[255,69,0],orchid:[218,112,214],palegoldenrod:[238,232,170],palegreen:[152,251,152],paleturquoise:[175,238,238],palevioletred:[219,112,147],papayawhip:[255,239,213],peachpuff:[255,218,185],peru:[205,133,63],pink:[255,192,203],plum:[221,160,221],powderblue:[176,224,230],purple:[128,0,128],rebeccapurple:[102,51,153],red:[255,0,0],rosybrown:[188,143,143],royalblue:[65,105,225],saddlebrown:[139,69,19],salmon:[250,128,114],sandybrown:[244,164,96],seagreen:[46,139,87],seashell:[255,245,238],sienna:[160,82,45],silver:[192,192,192],skyblue:[135,206,235],slateblue:[106,90,205],slategray:[112,128,144],slategrey:[112,128,144],snow:[255,250,250],springgreen:[0,255,127],steelblue:[70,130,180],tan:[210,180,140],teal:[0,128,128],thistle:[216,191,216],tomato:[255,99,71],turquoise:[64,224,208],violet:[238,130,238],wheat:[245,222,179],white:[255,255,255],whitesmoke:[245,245,245],yellow:[255,255,0],yellowgreen:[154,205,50]}},{}]},{},[1]);