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----
-title: Radar Chart
-anchor: radar-chart
----
-
-###Introduction
-A radar chart is a way of showing multiple data points and the variation between them.
-
-They are often useful for comparing the points of two or more different data sets.
-
-<div class="canvas-holder">
-	<canvas width="250" height="125"></canvas>
-</div>
-
-###Example usage
-
-```javascript
-var myRadarChart = new Chart(ctx).Radar(data, options);
-```
-
-###Data structure
-```javascript
-var data = {
-	labels: ["Eating", "Drinking", "Sleeping", "Designing", "Coding", "Cycling", "Running"],
-	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: [65, 59, 90, 81, 56, 55, 40]
-		},
-		{
-			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: [28, 48, 40, 19, 96, 27, 100]
-		}
-	]
-};
-```
-For a radar chart, to provide context of what each point means, we include an array of strings that show around each point in the chart.
-For the radar chart data, we have an array of datasets. Each of these is an object, with a fill colour, a stroke colour, a colour for the fill of each point, and a colour for the stroke of each point. We also have an array of data values.
-
-The label key on each dataset is optional, and can be used when generating a scale for the chart.
-
-### Chart options
-
-These are the customisation options specific to Radar charts. These options are merged with the [global chart configuration options](#getting-started-global-chart-configuration), and form the options of the chart.
-
-
-```javascript
-{
-	//Boolean - Whether to show lines for each scale point
-	scaleShowLine : true,
-
-	//Boolean - Whether we show the angle lines out of the radar
-	angleShowLineOut : true,
-
-	//Boolean - Whether to show labels on the scale
-	scaleShowLabels : false,
-
-	// Boolean - Whether the scale should begin at zero
-	scaleBeginAtZero : true,
-
-	//String - Colour of the angle line
-	angleLineColor : "rgba(0,0,0,.1)",
-
-	//Number - Pixel width of the angle line
-	angleLineWidth : 1,
-
-	//String - Point label font declaration
-	pointLabelFontFamily : "'Arial'",
-
-	//String - Point label font weight
-	pointLabelFontStyle : "normal",
-
-	//Number - Point label font size in pixels
-	pointLabelFontSize : 10,
-
-	//String - Point label font colour
-	pointLabelFontColor : "#666",
-
-	//Boolean - Whether to show a dot for each point
-	pointDot : true,
-
-	//Number - Radius of each point dot in pixels
-	pointDotRadius : 3,
-
-	//Number - Pixel width of point dot stroke
-	pointDotStrokeWidth : 1,
-
-	//Number - amount extra to add to the radius to cater for hit detection outside the drawn point
-	pointHitDetectionRadius : 20,
-
-	//Boolean - Whether to show a stroke for datasets
-	datasetStroke : true,
-
-	//Number - Pixel width of dataset stroke
-	datasetStrokeWidth : 2,
-
-	//Boolean - Whether to fill the dataset with a colour
-	datasetFill : true,
-	{% raw %}
-	//String - A legend template
-	legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span style=\"background-color:<%=datasets[i].strokeColor%>\"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>"
-	{% endraw %}
-}
-```
-
-
-You can override these for your `Chart` instance by passing a second argument into the `Radar` method as an object with the keys you want to override.
-
-For example, we could have a radar chart without a point for each on piece of data by doing the following:
-
-```javascript
-new Chart(ctx).Radar(data, {
-	pointDot: false
-});
-// This will create a chart with all of the default options, merged from the global config,
-//  and the Bar chart defaults but this particular instance will have `pointDot` set to false.
-```
-
-We can also change these defaults values for each Radar type that is created, this object is available at `Chart.defaults.Radar`.
-
-
-### Prototype methods
-
-#### .getPointsAtEvent( event )
-
-Calling `getPointsAtEvent(event)` on your Chart instance passing an argument of an event, or jQuery event, will return the point elements that are at that the same position of that event.
-
-```javascript
-canvas.onclick = function(evt){
-	var activePoints = myRadarChart.getPointsAtEvent(evt);
-	// => activePoints is an array of points on the canvas that are at the same position as the click event.
-};
-```
-
-This functionality may be useful for implementing DOM based tooltips, or triggering custom behaviour in your application.
-
-#### .update( )
-
-Calling `update()` on your Chart instance will re-render the chart with any updated values, allowing you to edit the value of multiple existing points, then render those in one animated render loop.
-
-```javascript
-myRadarChart.datasets[0].points[2].value = 50;
-// Would update the first dataset's value of 'Sleeping' to be 50
-myRadarChart.update();
-// Calling update now animates the position of Sleeping from 90 to 50.
-```
-
-#### .addData( valuesArray, label )
-
-Calling `addData(valuesArray, label)` on your Chart instance passing an array of values for each dataset, along with a label for those points.
-
-```javascript
-// The values array passed into addData should be one for each dataset in the chart
-myRadarChart.addData([40, 60], "Dancing");
-// The new data will now animate at the end of the chart.
-```
-
-#### .removeData( )
-
-Calling `removeData()` on your Chart instance will remove the first value for all datasets on the chart.
-
-```javascript
-myRadarChart.removeData();
-// Other points will now animate to their correct positions.
-```
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