The radar chart allows a number of properties to be specified for each dataset. These are used to set display properties for a specific dataset. For example, the colour of a line is generally set this way.
All point* properties can be specified as an array. If these are set to an array value, the first value applies to the first point, the second value to the second point, and so on.
| Name | Type | Description
| ---- | ---- | -----------
| `label` | `String` | The label for the dataset which appears in the legend and tooltips.
| `borderDash` | `Number[]` | Length and spacing of dashes. See [MDN](https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/setLineDash)
| `borderDashOffset` | `Number` | Offset for line dashes. See [MDN](https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/lineDashOffset)
| `borderCapStyle` | `String` | Cap style of the line. See [MDN](https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/lineCap)
| `borderJoinStyle` | `String` | Line joint style. See [MDN](https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/lineJoin)
| `pointHitRadius` | `Number/Number[]` | The pixel size of the non-displayed point that reacts to mouse events.
| `pointHoverBackgroundColor` | `Color/Color[]` | Point background color when hovered.
| `pointHoverBorderColor` | `Color/Color[]` | Point border color when hovered.
| `pointHoverBorderWidth` | `Number/Number[]` | Border width of point when hovered.
| `pointHoverRadius` | `Number/Number[]` | The radius of the point when hovered.
### pointStyle
The style of point. Options are:
* 'circle'
* 'cross'
* 'crossRot'
* 'dash'.
* 'line'
* 'rect'
* 'rectRounded'
* 'rectRot'
* 'star'
* 'triangle'
If the option is an image, that image is drawn on the canvas using [drawImage](https://developer.mozilla.org/en/docs/Web/API/CanvasRenderingContext2D/drawImage).
## Configuration Options
Unlike other charts, the radar chart has no chart specific options.
## Scale Options
The radar chart supports only a single scale. The options for this scale are defined in the `scale` property.
```javascript
options = {
scale: {
// Hides the scale
display: false
}
};
```
## Default Options
It is common to want to apply a configuration setting to all created radar charts. The global radar chart settings are stored in `Chart.defaults.radar`. Changing the global options only affects charts created after the change. Existing charts are not changed.
## Data Structure
The `data` property of a dataset for a radar chart is specified as a an array of numbers. Each point in the data array corresponds to the label at the same index on the x axis.
```javascript
data: [20, 10]
```
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.