Creates a band for a specified value range on the GaugeAxis. Multiple bands can be assigned to a single GaugeAxis.

### Example

    var chart = AmCharts.makeChart("chartdiv",{
    	...
    	"axes": [
    		{
    			...
    			"bands": [
    				{
    					"startValue": 0,
    					"endValue": 100
    				}
    			]
    		}
    	]
    });

### Properties

Property | Type | Default | Description
--- | --- | --- | ---
alpha | Number |  | Opacity of band fill. Will use axis.bandAlpha if not set any.
balloonText | String |  | When rolled-over, band will display balloon if you set some text for this property.
color | Color |  | Color of a band.
endValue | Number |  | End value of a fill.
gradientRatio | Array[Number] | [] | Example: [-0.2, 0, -0.2]. Will make bands to be filled with color gradients. Negative value means the color will be darker than the original, and positive number means the color will be lighter.
id | String |  | Unique id of a band.
innerRadius | Number/String |  | Inner radius of a band. If not set any, the band will end with the end of minor ticks. Set 0 if you want the band to be drawn to the axis center.
radius | Number/String |  | Band radius. If not set any, the band will start with the axis outline.
startValue | Number |  | Start value of a fill.
url | String |  | Gauge band can be clickable and can lead to some page.

### Methods

Name | Parameters | Returns | Description
--- | --- | --- | ---
setEndValue(value) | value |  | Sets end value for the band.
setStartValue(value) | value |  | Sets start value for the band.

### Events

Name | Event object | Description
--- | --- | ---
clickBand | {type: "clickBand", dataItem: GaugeBand, chart: Object, event: MouseEvent} | Dispatched when user clicks on a band.
rollOutBand | {type: "rollOutBand", dataItem: GaugeBand, chart: Object, event: MouseEvent} | Dispatched when user rolls-out of the band.
rollOverBand | {type: "rollOverBand", dataItem: GaugeBand, chart: Object, event: MouseEvent} | Dispatched when user rolls-over the band.