ScaleControl

A ScaleControl control displays the ratio of a distance on the map to the corresponding distance on the ground.

Example

let scale = new ScaleControl({
    maxWidth: 80,
    unit: 'imperial'
});
map.addControl(scale);

scale.setUnit('metric');

Implements

IControl

Constructors

new ScaleControl()

new ScaleControl(options?: ScaleControlOptions): ScaleControl

Parameters

Parameter	Type	Description
`options`?	`ScaleControlOptions`	the control's options

Returns

ScaleControl

Defined in

src/ui/control/scale_control.ts:56

Methods

getDefaultPosition()

getDefaultPosition(): ControlPosition

Optionally provide a default position for this control. If this method is implemented and Map#addControl is called without the position parameter, the value returned by getDefaultPosition will be used as the control's position.

Returns

ControlPosition

a control position, one of the values valid in addControl.

Implementation of

IControl.getDefaultPosition

Defined in

src/ui/control/scale_control.ts:60

onAdd()

onAdd(map: Map): HTMLElement

Register a control on the map and give it a chance to register event listeners and resources. This method is called by Map#addControl internally.

Parameters

Parameter	Type	Description
`map`	`Map`	the Map this control will be added to

Returns

HTMLElement

The control's container element. This should be created by the control and returned by onAdd without being attached to the DOM: the map will insert the control's element into the DOM as necessary.