Chart.js 横坐标太挤，数据挤到一起了，咋整？

Chart.js 横坐标太挤，数据挤到一起了，咋整？使用Flex SDK中的LineChart作图时遇到过类似问题，不过Adobe很给力，有很好的解决方案。简单看了一下chart.js源码，加了三行代码，引入变量xLabelsSkip，以跳过多余的xLabels。

Chart.js 狗尾续貂版：

/*! * 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 servervar root = this,previous = root.Chart;//Occupy the global variable of Chart, and create a simple base classvar Chart = function(context){var chart = this;this.canvas = context.canvas;this.ctx = context;//Variables global to the chartvar 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;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/changingChart.defaults = {global: {// Boolean - Whether to animate the chartanimation: true,// Number - Number of animation stepsanimationSteps: 60,// String - Animation easing effectanimationEasing: "easeOutQuart",// Boolean - If we should show the scale at allshowScale: true,// Boolean - If we want to override with a hard coded scalescaleOverride: false,// ** Required if scaleOverride is true **// Number - The number of steps in a hard coded scalescaleSteps: null,// Number - The value jump in the hard coded scalescaleStepWidth: null,// Number - The scale starting valuescaleStartValue: null,// String - Colour of the scale linescaleLineColor: "rgba(0,0,0,.1)",// Number - Pixel width of the scale linescaleLineWidth: 1,// Boolean - Whether to show labels on the scalescaleShowLabels: true,// Interpolated JS string - can access valuescaleLabel: "<%=value%>",// Boolean - Whether the scale should stick to integers, and not show any floats even if drawing space is therescaleIntegersOnly: true,// Boolean - Whether the scale should start at zero, or an order of magnitude down from the lowest valuescaleBeginAtZero: false,// String - Scale label font declaration for the scale labelscaleFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",// Number - Scale label font size in pixelsscaleFontSize: 12,// String - Scale label font weight stylescaleFontStyle: "normal",// String - Scale label font colourscaleFontColor: "#666",// Boolean - whether or not the chart should be responsive and resize when the browser does.responsive: false,//Added By SoongxLabelsSkip:1,// Boolean - whether to maintain the starting aspect ratio or not when responsive, if set to false, will take up entire containermaintainAspectRatio: true,// Boolean - Determines whether to draw tooltips on the canvas or not - attaches events to touchmove & mousemoveshowTooltips: true,// Boolean - Determines whether to draw built-in tooltip or call custom tooltip functioncustomTooltips: false,// Array - Array of string names to attach tooltip eventstooltipEvents: ["mousemove", "touchstart", "touchmove", "mouseout"],// String - Tooltip background colourtooltipFillColor: "rgba(0,0,0,0.8)",// String - Tooltip label font declaration for the scale labeltooltipFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",// Number - Tooltip label font size in pixelstooltipFontSize: 14,// String - Tooltip font weight styletooltipFontStyle: "normal",// String - Tooltip label font colourtooltipFontColor: "#fff",// String - Tooltip title font declaration for the scale labeltooltipTitleFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",// Number - Tooltip title font size in pixelstooltipTitleFontSize: 14,// String - Tooltip title font weight styletooltipTitleFontStyle: "bold",// String - Tooltip title font colourtooltipTitleFontColor: "#fff",// String - Tooltip title templatetooltipTitleTemplate: "<%= label%>",// Number - pixel width of padding around tooltip texttooltipYPadding: 6,// Number - pixel width of padding around tooltip texttooltipXPadding: 6,// Number - Size of the caret on the tooltiptooltipCaretSize: 8,// Number - Pixel radius of the tooltip bordertooltipCornerRadius: 6,// Number - Pixel offset from point x to tooltip edgetooltipXOffset: 10,// String - Template string for single tooltipstooltipTemplate: "<%if (label){%><%=label%>: <%}%><%= value %>",// String - Template string for single tooltipsmultiTooltipTemplate: "<%= datasetLabel %>: <%= value %>",// String - Colour behind the legend colour blockmultiTooltipKeyBackground: '#fff',// Array - A list of colors to use as the defaultssegmentColorDefault: ["#A6CEE3", "#1F78B4", "#B2DF8A", "#33A02C", "#FB9A99", "#E31A1C", "#FDBF6F", "#FF7F00", "#CAB2D6", "#6A3D9A", "#B4B482", "#B15928" ],// Array - A list of highlight colors to use as the defaultssegmentHighlightColorDefaults: [ "#CEF6FF", "#47A0DC", "#DAFFB2", "#5BC854", "#FFC2C1", "#FF4244", "#FFE797", "#FFA728", "#F2DAFE", "#9265C2", "#DCDCAA", "#D98150" ],// 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 typesChart.types = {};//Global Chart helpers object for utility methods and classesvar helpers = Chart.helpers = {};//-- Basic js utility methodsvar 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 arrayif (!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 arrayif (!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.jsvar 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 errorsif (window.console && typeof window.console.warn === "function") console.warn(str);},amd = helpers.amd = (typeof define === 'function' && define.amd),//-- Math methodsisNumber = 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. 0.01return s.split(".")[1].length;}else if(s.indexOf(".") < 0) {// no decimal point, e.g. 1e-9return parseInt(s.split("e-")[1]);}else {// exponent and decimal point, e.g. 1.23e-9var 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 angleif (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.htmlvar 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 Tafb=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 basevar minSteps = 2,maxSteps = Math.floor(drawingSize/(textSize * 1.5)),skipFitting = (minSteps >= maxSteps);// Filter out null values since these would min() to zerovar values = [];each(valuesArray, function( v ){v == null || values.push( v );});var minValue = min(values),    maxValue = max(values);// We need some degree of separation 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 zeroif (minValue >= 0.5 && !startFromZero){minValue -= 0.5;}else{// Make up a whole number above the valuesmaxValue += 0.5;}}varvalueRange = 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 datawhile((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 scaleelse{//If user has declared ints only, and the step value isn't a decimalif (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 floatif(stepValue/2 % 1 === 0){stepValue /=2;numberOfSteps = Math.round(graphRange/stepValue);}//If it would make it a float break out of the loopelse{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 valuesObjectif(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 JavaScriptstr.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 userreturn 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 methodsgetRelativePosition = 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 presentif (!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 ? container.clientWidth - padding : 0;},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 ? container.clientHeight - padding : 0;},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 supportretinaScale = 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 methodsclear = 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();};//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 namespaceChart.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 extendedif (options.responsive){this.resize();}this.initialize.call(this,data);};//Core methods that'll be a part of every chart typeextend(Chart.Type.prototype,{initialize : function(){return this;},clear : function(){clear(this.chart);return this;},stop : function(){// Stops any current animation loop occuringChart.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){if (reflow){this.reflow();}if (this.options.animation && !reflow){var animation = new Chart.Animation();animation.numSteps = this.options.animationSteps;animation.easing = this.options.animationEasing;// render functionanimation.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 eventsanimation.onAnimationProgress = this.options.onAnimationProgress;animation.onAnimationComplete = this.options.onAnimationComplete;Chart.animationService.addAnimation(this, animation);}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 contextcanvas.width = this.chart.width;canvas.height = this.chart.height;// < IE9 doesn't support removePropertyif (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];},showTooltip : function(ChartElements, forceRedraw){// Only redraw the chart if we've actually changed what we're hovering on.if (typeof this.activeElements === 'undefined') this.activeElements = [];var isChanged = (function(Elements){var changed = false;if (Elements.length !== this.activeElements.length){changed = true;return changed;}each(Elements, function(element, index){if (element !== this.activeElements[index]){changed = true;}}, this);return changed;}).call(this, ChartElements);if (!isChanged && !forceRedraw){return;}else{this.activeElements = ChartElements;}this.draw();if(this.options.customTooltips){this.options.customTooltips(false);}if (ChartElements.length > 0){// If we have multiple datasets, show a MultiTooltip for all of the data points at that indexif (this.datasets && this.datasets.length > 1) {var dataArray,dataIndex;for (var i = this.datasets.length - 1; i >= 0; i--) {dataArray = this.datasets[i].points || this.datasets[i].bars || this.datasets[i].segments;dataIndex = indexOf(dataArray, ChartElements[0]);if (dataIndex !== -1){break;}}var tooltipLabels = [],tooltipColors = [],medianPosition = (function(index) {// Get all the points at that particular indexvar Elements = [],dataCollection,xPositions = [],yPositions = [],xMax,yMax,xMin,yMin;helpers.each(this.datasets, function(dataset){dataCollection = dataset.points || dataset.bars || dataset.segments;if (dataCollection[dataIndex] && dataCollection[dataIndex].hasValue()){Elements.push(dataCollection[dataIndex]);}});helpers.each(Elements, function(element) {xPositions.push(element.x);yPositions.push(element.y);//Include any colour information about the elementtooltipLabels.push(helpers.template(this.options.multiTooltipTemplate, element));tooltipColors.push({fill: element._saved.fillColor || element.fillColor,stroke: element._saved.strokeColor || element.strokeColor});}, 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);new Chart.MultiTooltip({x: medianPosition.x,y: medianPosition.y,xPadding: this.options.tooltipXPadding,yPadding: this.options.tooltipYPadding,xOffset: this.options.tooltipXOffset,fillColor: this.options.tooltipFillColor,textColor: this.options.tooltipFontColor,fontFamily: this.options.tooltipFontFamily,fontStyle: this.options.tooltipFontStyle,fontSize: this.options.tooltipFontSize,titleTextColor: this.options.tooltipTitleFontColor,titleFontFamily: this.options.tooltipTitleFontFamily,titleFontStyle: this.options.tooltipTitleFontStyle,titleFontSize: this.options.tooltipTitleFontSize,cornerRadius: this.options.tooltipCornerRadius,labels: tooltipLabels,legendColors: tooltipColors,legendColorBackground : this.options.multiTooltipKeyBackground,title: template(this.options.tooltipTitleTemplate,ChartElements[0]),chart: this.chart,ctx: this.chart.ctx,custom: this.options.customTooltips}).draw();} else {each(ChartElements, function(Element) {var tooltipPosition = Element.tooltipPosition();new Chart.Tooltip({x: Math.round(tooltipPosition.x),y: Math.round(tooltipPosition.y),xPadding: this.options.tooltipXPadding,yPadding: this.options.tooltipYPadding,fillColor: this.options.tooltipFillColor,textColor: this.options.tooltipFontColor,fontFamily: this.options.tooltipFontFamily,fontStyle: this.options.tooltipFontStyle,fontSize: this.options.tooltipFontSize,caretHeight: this.options.tooltipCaretSize,cornerRadius: this.options.tooltipCornerRadius,text: template(this.options.tooltipTemplate, Element),chart: this.chart,custom: this.options.customTooltips}).draw();}, this);}}return this;},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 classChartType.prototype = clone(parent.prototype);//Now overwrite some of the properties in the base class with the new extensionsextend(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 prototypeChart.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,configuration);this.initialize.apply(this,arguments);this.save();};extend(Chart.Element.prototype,{initialize : function(){},restore : function(props){if (!props){extend(this,this._saved);} else {each(props,function(key){this[key] = this._saved[key];},this);}return this;},save : function(){this._saved = clone(this);delete this._saved._saved;return this;},update : function(newProps){each(newProps,function(value,key){this._saved[key] = this[key];this[key] = value;},this);return this;},transition : function(props,ease){each(props,function(value,key){this[key] = ((value - this._saved[key]) * ease) + this._saved[key];},this);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.strokeColor;ctx.lineWidth = this.strokeWidth;ctx.fillStyle = this.fillColor;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});// Normalize all angles to 0 - 2*PI (0 - 360°)var pointRelativeAngle = pointRelativePosition.angle % (Math.PI * 2),    startAngle = (Math.PI * 2 + this.startAngle) % (Math.PI * 2),    endAngle = (Math.PI * 2 + this.endAngle) % (Math.PI * 2) || 360;// Calculate wether the pointRelativeAngle is between the start and the end anglevar betweenAngles = (endAngle < startAngle) ?pointRelativeAngle <= endAngle || pointRelativeAngle >= startAngle:pointRelativeAngle >= startAngle && pointRelativeAngle <= endAngle;//Check if within the range of the open/close anglevar 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 < 0 ? 0 : this.outerRadius, this.startAngle, this.endAngle);            ctx.arc(this.x, this.y, this.innerRadius < 0 ? 0 : this.innerRadius, this.endAngle, this.startAngle, true);ctx.closePath();ctx.strokeStyle = this.strokeColor;ctx.lineWidth = this.strokeWidth;ctx.fillStyle = this.fillColor;ctx.fill();ctx.lineJoin = 'bevel';if (this.showStroke){ctx.stroke();}}});Chart.Rectangle = Chart.Element.extend({draw : function(){var ctx = this.ctx,halfWidth = this.width/2,leftX = this.x - halfWidth,rightX = this.x + halfWidth,top = this.base - (this.base - this.y),halfStroke = this.strokeWidth / 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 lineif (this.showStroke){leftX += halfStroke;rightX -= halfStroke;top += halfStroke;}ctx.beginPath();ctx.fillStyle = this.fillColor;ctx.strokeStyle = this.strokeColor;ctx.lineWidth = this.strokeWidth;// It'd be nice to keep this class totally generic to any rectangle// and simply specify which border to miss out.ctx.moveTo(leftX, this.base);ctx.lineTo(leftX, top);ctx.lineTo(rightX, top);ctx.lineTo(rightX, this.base);ctx.fill();if (this.showStroke){ctx.stroke();}},height : function(){return this.base - this.y;},inRange : function(chartX,chartY){return (chartX >= this.x - this.width/2 && chartX <= this.x + this.width/2) && (chartY >= this.y && chartY <= this.base);}});Chart.Animation = Chart.Element.extend({currentStep: null, // the current animation stepnumSteps: 60, // default number of stepseasing: "", // the easing to use for this animationrender: null, // render function used by the animation serviceonAnimationProgress: 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({draw : function(){var ctx = this.chart.ctx;ctx.font = fontString(this.fontSize,this.fontStyle,this.fontFamily);this.xAlign = "center";this.yAlign = "above";//Distance between the actual element.y position and the start of the tooltip caretvar caretPadding = this.caretPadding = 2;var tooltipWidth = ctx.measureText(this.text).width + 2*this.xPadding,tooltipRectHeight = this.fontSize + 2*this.yPadding,tooltipHeight = tooltipRectHeight + this.caretHeight + caretPadding;if (this.x + tooltipWidth/2 >this.chart.width){this.xAlign = "left";} else if (this.x - tooltipWidth/2 < 0){this.xAlign = "right";}if (this.y - tooltipHeight < 0){this.yAlign = "below";}var tooltipX = this.x - tooltipWidth/2,tooltipY = this.y - tooltipHeight;ctx.fillStyle = this.fillColor;// Custom Tooltipsif(this.custom){this.custom(this);}else{switch(this.yAlign){case "above"://Draw a caret above the x/yctx.beginPath();ctx.moveTo(this.x,this.y - caretPadding);ctx.lineTo(this.x + this.caretHeight, this.y - (caretPadding + this.caretHeight));ctx.lineTo(this.x - this.caretHeight, this.y - (caretPadding + this.caretHeight));ctx.closePath();ctx.fill();break;case "below":tooltipY = this.y + caretPadding + this.caretHeight;//Draw a caret below the x/yctx.beginPath();ctx.moveTo(this.x, this.y + caretPadding);ctx.lineTo(this.x + this.caretHeight, this.y + caretPadding + this.caretHeight);ctx.lineTo(this.x - this.caretHeight, this.y + caretPadding + this.caretHeight);ctx.closePath();ctx.fill();break;}switch(this.xAlign){case "left":tooltipX = this.x - tooltipWidth + (this.cornerRadius + this.caretHeight);break;case "right":tooltipX = this.x - (this.cornerRadius + this.caretHeight);break;}drawRoundedRectangle(ctx,tooltipX,tooltipY,tooltipWidth,tooltipRectHeight,this.cornerRadius);ctx.fill();ctx.fillStyle = this.textColor;ctx.textAlign = "center";ctx.textBaseline = "middle";ctx.fillText(this.text, tooltipX + tooltipWidth/2, tooltipY + tooltipRectHeight/2);}}});Chart.MultiTooltip = Chart.Element.extend({initialize : function(){this.font = fontString(this.fontSize,this.fontStyle,this.fontFamily);this.titleFont = fontString(this.titleFontSize,this.titleFontStyle,this.titleFontFamily);this.titleHeight = this.title ? this.titleFontSize * 1.5 : 0;this.height = (this.labels.length * this.fontSize) + ((this.labels.length-1) * (this.fontSize/2)) + (this.yPadding*2) + this.titleHeight;this.ctx.font = this.titleFont;var titleWidth = this.ctx.measureText(this.title).width,//Label has a legend square as well so account for this.labelWidth = longestText(this.ctx,this.font,this.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 canvasif (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 canvasif (this.x > this.chart.width/2){this.x -= this.xOffset + this.width;} else {this.x += this.xOffset;}},getLineHeight : function(index){var baseLineHeight = this.y - (this.height/2) + this.yPadding,afterTitleIndex = index-1;//If the index is zero, we're getting the titleif (index === 0){return baseLineHeight + this.titleHeight / 3;} else{return baseLineHeight + ((this.fontSize * 1.5 * afterTitleIndex) + this.fontSize / 2) + this.titleHeight;}},draw : function(){// Custom Tooltipsif(this.custom){this.custom(this);}else{drawRoundedRectangle(this.ctx,this.x,this.y - this.height/2,this.width,this.height,this.cornerRadius);var ctx = this.ctx;ctx.fillStyle = this.fillColor;ctx.fill();ctx.closePath();ctx.textAlign = "left";ctx.textBaseline = "middle";ctx.fillStyle = this.titleTextColor;ctx.font = this.titleFont;ctx.fillText(this.title,this.x + this.xPadding, this.getLineHeight(0));ctx.font = this.font;helpers.each(this.labels,function(label,index){ctx.fillStyle = this.textColor;ctx.fillText(label,this.x + this.xPadding + this.fontSize + 3, this.getLineHeight(index + 1));//A bit gnarly, but clearing this rectangle breaks when using explorercanvas (clears whole canvas)//ctx.clearRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize/2, this.fontSize, this.fontSize);//Instead we'll make a white filled block to put the legendColour palette over.ctx.fillStyle = this.legendColorBackground;ctx.fillRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize/2, this.fontSize, this.fontSize);ctx.fillStyle = this.legendColors[index].fill;ctx.fillRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize/2, this.fontSize, this.fontSize);},this);}}});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 usefit: 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 rotationthis.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 labelsvar cachedEndPoint = this.endPoint;// Cache the starting height, so can determine if we need to recalculate the scale yAxisvar 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 yLabelthis.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 changedif (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 readabilityvar xGridWidth = Math.floor(this.calculateX(1) - this.calculateX(0)) - 6;//Max label rotate should be 90 - also act as a loop counterwhile ((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 classcalculateYRange: 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 itif (index === 0 && !drawHorizontalLine){drawHorizontalLine = true;}if (drawHorizontalLine){ctx.beginPath();}if (index > 0){// This is a grid line in the centre, so drop thatctx.lineWidth = this.gridLineWidth;ctx.strokeStyle = this.gridLineColor;} else {// This is the first line on the scalectx.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){if((index+1)%this.xLabelsSkip)return;//Added By Soongvar xPos = this.calculateX(index) + aliasPixel(this.lineWidth),// Check to see if line/bar here and decide where to place the linelinePos = this.calculateX(index - (this.offsetGridLines ? 0.5 : 0)) + aliasPixel(this.lineWidth),isRotated = (this.xLabelRotation > 0),drawVerticalLine = this.showVerticalLines;// This is Y axis, so draw itif (index === 0 && !drawVerticalLine){drawVerticalLine = true;}if (drawVerticalLine){ctx.beginPath();}if (index > 0){// This is a grid line in the centre, so drop thatctx.lineWidth = this.gridLineWidth;ctx.strokeStyle = this.gridLineColor;} else {// This is the first line on the scalectx.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 linectx.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 valuevar 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 pointsvar 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 sizeshalfTextWidth = 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 textif (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 textif (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 chartradiusReductionRight = (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 changethis.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 circlereturn 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 valueif (index > 0){var yCenterOffset = index * (this.drawingArea/this.steps),yHeight = this.yCenter - yCenterOffset,pointPosition;// Draw circular lines around the scaleif (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--) {var centerOffset = null, outerPosition = null;if (this.angleLineWidth > 0){centerOffset = this.calculateCenterOffset(this.max);outerPosition = this.getPointPosition(i, centerOffset);ctx.beginPath();ctx.moveTo(this.xCenter, this.yCenter);ctx.lineTo(outerPosition.x, outerPosition.y);ctx.stroke();ctx.closePath();}if (this.backgroundColors && this.backgroundColors.length == this.valuesCount) {if (centerOffset == null)centerOffset = this.calculateCenterOffset(this.max);if (outerPosition == null)outerPosition = this.getPointPosition(i, centerOffset);var previousOuterPosition = this.getPointPosition(i === 0 ? this.valuesCount - 1 : i - 1, centerOffset);var nextOuterPosition = this.getPointPosition(i === this.valuesCount - 1 ? 0 : i + 1, centerOffset);var previousOuterHalfway = { x: (previousOuterPosition.x + outerPosition.x) / 2, y: (previousOuterPosition.y + outerPosition.y) / 2 };var nextOuterHalfway = { x: (outerPosition.x + nextOuterPosition.x) / 2, y: (outerPosition.y + nextOuterPosition.y) / 2 };ctx.beginPath();ctx.moveTo(this.xCenter, this.yCenter);ctx.lineTo(previousOuterHalfway.x, previousOuterHalfway.y);ctx.lineTo(outerPosition.x, outerPosition.y);ctx.lineTo(nextOuterHalfway.x, nextOuterHalfway.y);ctx.fillStyle = this.backgroundColors[i];ctx.fill();ctx.closePath();}// Extra 3px out for some label spacingvar 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 positioningif (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) {for (var index = 0; index < this.animations.length; ++ index){if (this.animations[index].chartInstance === chartInstance){// replacing an in progress animationthis.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 wordif (this.animations.length == 1) {helpers.requestAnimFrame.call(window, this.digestWrapper);}},// Cancel the animation for a given chart instancecancelAnimation: function(chartInstance) {var index = helpers.findNextWhere(this.animations, function(animationWrapper) {return animationWrapper.chartInstance === chartInstance;});if (index){this.animations.splice(index, 1);}},// calls startDigest with the proper contextdigestWrapper: 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);// Check if executed the last frame.if (this.animations[i].animationObject.currentStep == this.animations[i].animationObject.numSteps){// Call onAnimationCompletethis.animations[i].animationObject.onAnimationComplete.call(this.animations[i].chartInstance);// Remove the animation.this.animations.splice(i, 1);// Keep the index in place to offset the splicei--;}}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 resizeshelpers.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('Chart', [], 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 valuescaleBeginAtZero : true,//Boolean - Whether grid lines are shown across the chartscaleShowGridLines : true,//String - Colour of the grid linesscaleGridLineColor : "rgba(0,0,0,.05)",//Number - Width of the grid linesscaleGridLineWidth : 1,//Boolean - Whether to show horizontal lines (except X axis)scaleShowHorizontalLines: true,//Boolean - Whether to show vertical lines (except Y axis)scaleShowVerticalLines: true,//Boolean - If there is a stroke on each barbarShowStroke : true,//Number - Pixel width of the bar strokebarStrokeWidth : 2,//Number - Spacing between each of the X value setsbarValueSpacing : 5,//Number - Spacing between data sets within X valuesbarDatasetSpacing : 1,//String - A legend templatelegendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span style=\"background-color:<%=datasets[i].fillColor%>\"><%if(datasets[i].label){%><%=datasets[i].label%><%}%></span></li><%}%></ul>"};Chart.Type.extend({name: "Bar",defaults : defaultConfig,initialize:  function(data){//Expose options as a scope variable here so we can access it in the ScaleClassvar options = this.options;this.ScaleClass = Chart.Scale.extend({offsetGridLines : true,calculateBarX : function(datasetCount, datasetIndex, barIndex){//Reusable method for calculating the xPosition of a given bar based on datasetIndex & width of the barvar xWidth = this.calculateBaseWidth(),xAbsolute = this.calculateX(barIndex) - (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 datasetvar baseWidth = this.calculateBaseWidth() - ((datasetCount - 1) * options.barDatasetSpacing);return (baseWidth / datasetCount);}});this.datasets = [];//Set up tooltip events on the chartif (this.options.showTooltips){helpers.bindEvents(this, this.options.tooltipEvents, function(evt){var activeBars = (evt.type !== 'mouseout') ? this.getBarsAtEvent(evt) : [];this.eachBars(function(bar){bar.restore(['fillColor', 'strokeColor']);});helpers.each(activeBars, function(activeBar){activeBar.fillColor = activeBar.highlightFill;activeBar.strokeColor = activeBar.highlightStroke;});this.showTooltip(activeBars);});}//Declare the extension of the default point, to cater for the options passed in to the constructorthis.BarClass = Chart.Rectangle.extend({strokeWidth : this.options.barStrokeWidth,showStroke : this.options.barShowStroke,ctx : this.chart.ctx});//Iterate through each of the datasets, and build this into a property of the charthelpers.each(data.datasets,function(dataset,datasetIndex){var datasetObject = {label : dataset.label || null,fillColor : dataset.fillColor,strokeColor : dataset.strokeColor,bars : []};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.bars.push(new this.BarClass({value : dataPoint,label : data.labels[index],datasetLabel: dataset.label,strokeColor : dataset.strokeColor,fillColor : dataset.fillColor,highlightFill : dataset.highlightFill || dataset.fillColor,highlightStroke : dataset.highlightStroke || dataset.strokeColor}));},this);},this);this.buildScale(data.labels);this.BarClass.prototype.base = this.scale.endPoint;this.eachBars(function(bar, index, datasetIndex){helpers.extend(bar, {width : this.scale.calculateBarWidth(this.datasets.length),x: this.scale.calculateBarX(this.datasets.length, datasetIndex, index),y: this.scale.endPoint});bar.save();}, this);this.render();},update : function(){this.scale.update();// Reset any highlight colours before updating.helpers.each(this.activeElements, function(activeElement){activeElement.restore(['fillColor', 'strokeColor']);});this.eachBars(function(bar){bar.save();});this.render();},eachBars : function(callback){helpers.each(this.datasets,function(dataset, datasetIndex){helpers.each(dataset.bars, callback, this, datasetIndex);},this);},getBarsAtEvent : function(e){var barsArray = [],eventPosition = helpers.getRelativePosition(e),datasetIterator = function(dataset){barsArray.push(dataset.bars[barIndex]);},barIndex;for (var datasetIndex = 0; datasetIndex < this.datasets.length; datasetIndex++) {for (barIndex = 0; barIndex < this.datasets[datasetIndex].bars.length; barIndex++) {if (this.datasets[datasetIndex].bars[barIndex].inRange(eventPosition.x,eventPosition.y)){helpers.each(this.datasets, datasetIterator);return barsArray;}}}return barsArray;},buildScale : function(labels){var self = this;var dataTotal = function(){var values = [];self.eachBars(function(bar){values.push(bar.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.barShowStroke) ? this.options.barStrokeWidth : 0,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);},addData : function(valuesArray,label){//Map the values array for each of the datasetshelpers.each(valuesArray,function(value,datasetIndex){//Add a new point for each piece of data, passing any required data to draw.this.datasets[datasetIndex].bars.push(new this.BarClass({value : value,label : label,datasetLabel: this.datasets[datasetIndex].label,x: this.scale.calculateBarX(this.datasets.length, datasetIndex, this.scale.valuesCount+1),y: this.scale.endPoint,width : this.scale.calculateBarWidth(this.datasets.length),base : this.scale.endPoint,strokeColor : this.datasets[datasetIndex].strokeColor,fillColor : this.datasets[datasetIndex].fillColor}));},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.bars.shift();},this);this.update();},reflow : function(){helpers.extend(this.BarClass.prototype,{y: this.scale.endPoint,base : this.scale.endPoint});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;this.scale.draw(easingDecimal);//Draw all the bars for each datasethelpers.each(this.datasets,function(dataset,datasetIndex){helpers.each(dataset.bars,function(bar,index){if (bar.hasValue()){bar.base = this.scale.endPoint;//Transition then drawbar.transition({x : this.scale.calculateBarX(this.datasets.length, datasetIndex, index),y : this.scale.calculateY(bar.value),width : this.scale.calculateBarWidth(this.datasets.length)}, easingDecimal).draw();}},this);},this);}});}).call(this);(function(){"use strict";var root = this,Chart = root.Chart,//Cache a local reference to Chart.helpershelpers = Chart.helpers;var defaultConfig = {//Boolean - Whether we should show a stroke on each segmentsegmentShowStroke : true,//String - The colour of each segment strokesegmentStrokeColor : "#fff",//Number - The width of each segment strokesegmentStrokeWidth : 2,//The percentage of the chart that we cut out of the middle.percentageInnerCutout : 50,//Number - Amount of animation stepsanimationSteps : 100,//String - Animation easing effectanimationEasing : "easeOutBounce",//Boolean - Whether we animate the rotation of the DoughnutanimateRotate : true,//Boolean - Whether we animate scaling the Doughnut from the centreanimateScale : false,//String - A legend templatelegendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<segments.length; i++){%><li><span style=\"background-color:<%=segments[i].fillColor%>\"><%if(segments[i].label){%><%=segments[i].label%><%}%></span></li><%}%></ul>"};Chart.Type.extend({//Passing in a name registers this chart in the Chart namespacename: "Doughnut",//Providing a defaults will also register the deafults in the chart namespacedefaults : 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.optionsinitialize:  function(data){//Declare segments as a static property to prevent inheriting across the Chart type prototypethis.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 chartif (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 !== undefined ? atIndex : this.segments.length;if ( typeof(segment.color) === "undefined" ) {segment.color = Chart.defaults.global.segmentColorDefault[index % Chart.defaults.global.segmentColorDefault.length];segment.highlight = Chart.defaults.global.segmentHighlightColorDefaults[index % Chart.defaults.global.segmentHighlightColorDefaults.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(){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 angleif (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 chartscaleShowGridLines : true,//String - Colour of the grid linesscaleGridLineColor : "rgba(0,0,0,.05)",//Number - Width of the grid linesscaleGridLineWidth : 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 pointsbezierCurve : true,//Number - Tension of the bezier curve between pointsbezierCurveTension : 0.4,//Boolean - Whether to show a dot for each pointpointDot : true,//Number - Radius of each point dot in pixelspointDotRadius : 4,//Number - Pixel width of point dot strokepointDotStrokeWidth : 1,//Number - amount extra to add to the radius to cater for hit detection outside the drawn pointpointHitDetectionRadius : 20,//Boolean - Whether to show a stroke for datasetsdatasetStroke : true,//Number - Pixel width of dataset strokedatasetStrokeWidth : 2,//Boolean - Whether to fill the dataset with a colourdatasetFill : true,//String - A legend templatelegendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span style=\"background-color:<%=datasets[i].strokeColor%>\"><%if(datasets[i].label){%><%=datasets[i].label%><%}%></span></li><%}%></ul>",//Boolean - Whether to horizontally center the label and point dot inside the gridoffsetGridLines : false};Chart.Type.extend({name: "Line",defaults : defaultConfig,initialize:  function(data){//Declare the extension of the default point, to cater for the options passed in to the constructorthis.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 chartif (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 charthelpers.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(){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,xLabelsSkip:this.options.xLabelsSkip,//Added By Soongfont : 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 datasetshelpers.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 pointsvar 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;};if (!this.scale) return;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 loophelpers.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 separate 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 skewedif (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 boundsif (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 boundsif (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 pointsctx.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);if (this.options.datasetStroke) {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 positionshelpers.each(pointsWithValues,function(point){point.draw();});},this);}});}).call(this);(function(){"use strict";var root = this,Chart = root.Chart,//Cache a local reference to Chart.helpershelpers = Chart.helpers;var defaultConfig = {//Boolean - Show a backdrop to the scale labelscaleShowLabelBackdrop : true,//String - The colour of the label backdropscaleBackdropColor : "rgba(255,255,255,0.75)",// Boolean - Whether the scale should begin at zeroscaleBeginAtZero : true,//Number - The backdrop padding above & below the label in pixelsscaleBackdropPaddingY : 2,//Number - The backdrop padding to the side of the label in pixelsscaleBackdropPaddingX : 2,//Boolean - Show line for each value in the scalescaleShowLine : true,//Boolean - Stroke a line around each segment in the chartsegmentShowStroke : true,//String - The colour of the stroke on each segment.segmentStrokeColor : "#fff",//Number - The width of the stroke value in pixelssegmentStrokeWidth : 2,//Number - Amount of animation stepsanimationSteps : 100,//String - Animation easing effect.animationEasing : "easeOutBounce",//Boolean - Whether to animate the rotation of the chartanimateRotate : true,//Boolean - Whether to animate scaling the chart from the centreanimateScale : false,//String - A legend templatelegendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<segments.length; i++){%><li><span style=\"background-color:<%=segments[i].fillColor%>\"><%if(segments[i].label){%><%=segments[i].label%><%}%></span></li><%}%></ul>"};Chart.Type.extend({//Passing in a name registers this chart in the Chart namespacename: "PolarArea",//Providing a defaults will also register the deafults in the chart namespacedefaults : 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.optionsinitialize:  function(data){this.segments = [];//Declare segment class as a chart instance specific class, so it can share props for this instancethis.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 chartif (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(){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 canvasthis.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 angleif (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 pointscaleShowLine : true,//Boolean - Whether we show the angle lines out of the radarangleShowLineOut : true,//Boolean - Whether to show labels on the scalescaleShowLabels : false,// Boolean - Whether the scale should begin at zeroscaleBeginAtZero : true,//String - Colour of the angle lineangleLineColor : "rgba(0,0,0,.1)",//Number - Pixel width of the angle lineangleLineWidth : 1,//String - Point label font declarationpointLabelFontFamily : "'Arial'",//String - Point label font weightpointLabelFontStyle : "normal",//Number - Point label font size in pixelspointLabelFontSize : 10,//String - Point label font colourpointLabelFontColor : "#666",//Boolean - Whether to show a dot for each pointpointDot : true,//Number - Radius of each point dot in pixelspointDotRadius : 3,//Number - Pixel width of point dot strokepointDotStrokeWidth : 1,//Number - amount extra to add to the radius to cater for hit detection outside the drawn pointpointHitDetectionRadius : 20,//Boolean - Whether to show a stroke for datasetsdatasetStroke : true,//Number - Pixel width of dataset strokedatasetStrokeWidth : 2,//Boolean - Whether to fill the dataset with a colourdatasetFill : true,//String - A legend templatelegendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span style=\"background-color:<%=datasets[i].strokeColor%>\"><%if(datasets[i].label){%><%=datasets[i].label%><%}%></span></li><%}%></ul>"},initialize: function(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 chartif (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 charthelpers.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,backgroundColors: this.options.scaleBackgroundColors,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 linepointLabelFontColor : 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 datasetsthis.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(){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 synchelpers.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 pointsctx.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;if(this.options.datasetFill){ctx.fill();}//Now draw the points over the line//A little inefficient double looping, but better than the line//lagging behind the point positionshelpers.each(dataset.points,function(point){if (point.hasValue()){point.draw();}});},this);}});}).call(this);

Demo :

<!doctype html><html><head><title>Line Chart</title><script src="Chart.js"></script></head><body><div style="width:30%"><div><canvas id="canvas" height="450" width="600"></canvas></div></div><script>var randomScalingFactor = function(){ return Math.round(Math.random()*100);};var lineChartData = {labels : ["1","2","3","4","5","6","7"],datasets : [{label: "My First dataset",fillColor : "rgba(220,220,220,0.2)",strokeColor : "rgba(220,220,220,1)",pointColor : "rgba(220,220,220,1)",pointStrokeColor : "#fff",pointHighlightFill : "#fff",pointHighlightStroke : "rgba(220,220,220,1)",data : [randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor()]},{label: "My Second dataset",fillColor : "rgba(151,187,205,0.2)",strokeColor : "rgba(151,187,205,1)",pointColor : "rgba(151,187,205,1)",pointStrokeColor : "#fff",pointHighlightFill : "#fff",pointHighlightStroke : "rgba(151,187,205,1)",data : [randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor()]}]};function getSampleData(){var lineChartData={};lineChartData.labels=[1,2,3,4,5];lineChartData.datasets=[];var serial01={};/*serial01.label="My First dataset";serial01.fillColor = "rgba(220,220,220,0.2)";serial01.strokeColor = "rgba(220,220,220,1)";serial01.pointColor = "rgba(220,220,220,1)";serial01.pointStrokeColor = "#fff";serial01.pointHighlightFill = "#fff";serial01.pointHighlightStroke = "rgba(220,220,220,1)";*/serial01.data=[1,4,9,16,25];lineChartData.datasets.push(serial01);return lineChartData;}window.onload = function(){var y=getSampleData();var ctx = document.getElementById("canvas").getContext("2d");window.myLine = new Chart(ctx).Line(y, {responsive: true,xLabelsSkip:2,});};</script></body></html>