Version:

Class: Geolocation

ol.Geolocation


Helper class for providing HTML5 Geolocation capabilities. The Geolocation API is used to locate a user's position.

To get notified of position changes, register a listener for the generic change event on your instance of ol.Geolocation.

Example:

var geolocation = new ol.Geolocation({
  // take the projection to use from the map's view
  projection: view.getProjection()
});
// listen to changes in position
geolocation.on('change', function(evt) {
  window.console.log(geolocation.getPosition());
});

new ol.Geolocation(opt_options)

src/ol/geolocation.js, line 44
Name Type Description
options

Options.

Name Type Description
tracking boolean | undefined

Start Tracking. Default is false.
trackingOptions GeolocationPositionOptions | undefined

Tracking options. See href="http://www.w3.org/TR/geolocation-API/#position\_options\_interface">www.w3.org/TR/geolocation-API/#position\_options\_interface}.
projection ol.ProjectionLike

The projection the position is reported in.
Fires:

Extends

Observable Properties

Name Type Settable ol.Object.Event type Description
accuracy number | undefined no change:accuracy

The accuracy of the position measurement in meters.
accuracyGeometry ol.geom.Polygon no change:accuracygeometry

A geometry of the position accuracy.
altitude number | undefined no change:altitude

The altitude of the position in meters above mean sea level.
altitudeAccuracy number | undefined no change:altitudeaccuracy

The accuracy of the altitude measurement in meters.
heading number | undefined no change:heading

The heading of the device in radians from north.
position ol.Coordinate | undefined no change:position

The current position of the device reported in the current projection.
projection ol.proj.Projection | undefined yes change:projection

The projection the position is reported in.
speed number | undefined no change:speed

The instantaneous speed of the device in meters per second.
tracking boolean yes change:tracking

The device location is being tracked.
trackingOptions GeolocationPositionOptions | undefined yes change:trackingoptions

PositionOptions as defined by the HTML5 Geolocation spec .

Methods

changed() inherited

src/ol/observable.js, line 58

Increases the revision counter and dispatches a 'change' event.

dispatchEvent(event) inherited

src/ol/observable.js, line 75

Dispatches an event and calls all listeners listening for events of this type. The event parameter can either be a string or an Object with a type property.

Name Type Description
event Object | ol.events.Event | string

Event object.

get(key){*} inherited

src/ol/object.js, line 101

Gets a value.

Name Type Description
key string

Key name.
Returns:
Value.

getAccuracy(){number|undefined}

src/ol/geolocation.js, line 194

Get the accuracy of the position in meters.

Returns:
The accuracy of the position measurement in meters.

getAccuracyGeometry(){ol.geom.Polygon}

src/ol/geolocation.js, line 206

Get a geometry of the position accuracy.

Returns:
A geometry of the position accuracy.

getAltitude(){number|undefined}

src/ol/geolocation.js, line 219

Get the altitude associated with the position.

Returns:
The altitude of the position in meters above mean sea level.

getAltitudeAccuracy(){number|undefined}

src/ol/geolocation.js, line 232

Get the altitude accuracy of the position.

Returns:
The accuracy of the altitude measurement in meters.

getHeading(){number|undefined}

src/ol/geolocation.js, line 244

Get the heading as radians clockwise from North.

Returns:
The heading of the device in radians from north.

getKeys(){} inherited

src/ol/object.js, line 115

Get a list of object property names.

Returns:
List of property names.

getPosition(){ol.Coordinate|undefined}

src/ol/geolocation.js, line 257

Get the position of the device.

Returns:
The current position of the device reported in the current projection.

getProjection(){ol.proj.Projection|undefined}

src/ol/geolocation.js, line 270

Get the projection associated with the position.

Returns:
The projection the position is reported in.

getProperties(){} inherited

src/ol/object.js, line 125

Get an object of all property names and values.

Returns:
Object.

getRevision(){number} inherited

src/ol/observable.js, line 84

Get the version number for this object. Each time the object is modified, its version number will be incremented.

Returns:
Revision.

getSpeed(){number|undefined}

src/ol/geolocation.js, line 283

Get the speed in meters per second.

Returns:
The instantaneous speed of the device in meters per second.

getTracking(){boolean}

src/ol/geolocation.js, line 295

Determine if the device location is being tracked.

Returns:
The device location is being tracked.

getTrackingOptions(){GeolocationPositionOptions|undefined}

src/ol/geolocation.js, line 310

Get the tracking options.

See:
Returns:
PositionOptions as defined by the HTML5 Geolocation spec .

on(type, listener, opt_this){ol.EventsKey|Array.<ol.EventsKey>} inherited

src/ol/observable.js, line 99

Listen for a certain type of event.

Name Type Description
type string | Array.<string>

The event type or array of event types.
listener function

The listener function.
this Object

The object to use as this in listener.
Returns:
Unique key for the listener. If called with an array of event types as the first argument, the return will be an array of keys.

once(type, listener, opt_this){ol.EventsKey|Array.<ol.EventsKey>} inherited

src/ol/observable.js, line 124

Listen once for a certain type of event.

Name Type Description
type string | Array.<string>

The event type or array of event types.
listener function

The listener function.
this Object

The object to use as this in listener.
Returns:
Unique key for the listener. If called with an array of event types as the first argument, the return will be an array of keys.

set(key, value, opt_silent) inherited

src/ol/object.js, line 150

Sets a value.

Name Type Description
key string

Key name.
value *

Value.
silent boolean

Update without triggering an event.

setProjection(projection)

src/ol/geolocation.js, line 323

Set the projection to use for transforming the coordinates.

Name Type Description
projection ol.ProjectionLike

The projection the position is reported in.

setProperties(values, opt_silent) inherited

src/ol/object.js, line 170

Sets a collection of key-value pairs. Note that this changes any existing properties and adds new ones (it does not remove any existing properties).

Name Type Description
values

Values.
silent boolean

Update without triggering an event.

setTracking(tracking)

src/ol/geolocation.js, line 334

Enable or disable tracking.

Name Type Description
tracking boolean

Enable tracking.

setTrackingOptions(options)

src/ol/geolocation.js, line 348

Set the tracking options.

Name Type Description
options GeolocationPositionOptions

PositionOptions as defined by the HTML5 Geolocation spec .
See:

un(type, listener, opt_this) inherited

src/ol/observable.js, line 147

Unlisten for a certain type of event.

Name Type Description
type string | Array.<string>

The event type or array of event types.
listener function

The listener function.
this Object

The object which was used as this by the listener.

unset(key, opt_silent) inherited

src/ol/object.js, line 184

Unsets a property.

Name Type Description
key string

Key name.
silent boolean

Unset without triggering an event.