Class: OSM

ol/source/OSM~OSM 


import OSM from 'ol/source/OSM';

Layer source for the OpenStreetMap tile server.

new OSM(opt_options)

source/OSM.js, line 52
Name Type Description
options

Open Street Map options.

Name Type Description
attributions module:ol/source/Source~AttributionLike

Attributions.
cacheSize number

Initial tile cache size. Will auto-grow to hold at least the number of tiles in the viewport.
crossOrigin null | string (defaults to 'anonymous')

The crossOrigin attribute for loaded images. Note that you must provide a crossOrigin value if you want to access pixel data with the Canvas renderer. See https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image for more detail.
imageSmoothing boolean (defaults to true)

Enable image smoothing.
maxZoom number (defaults to 19)

Max zoom.
opaque boolean (defaults to true)

Whether the layer is opaque.
reprojectionErrorThreshold number (defaults to 0.5)

Maximum allowed reprojection error (in pixels). Higher values can increase reprojection performance, but decrease precision.
tileLoadFunction module:ol/Tile~LoadFunction

Optional function to load a tile given a URL. The default is

function(imageTile, src) {
  imageTile.getImage().src = src;
};
transition number (defaults to 250)

Duration of the opacity transition for rendering. To disable the opacity transition, pass transition: 0.
url string (defaults to 'https://{a-c}.tile.openstreetmap.org/{z}/{x}/{y}.png')

URL template. Must include {x}, {y} or {-y}, and {z} placeholders.
wrapX boolean (defaults to true)

Whether to wrap the world horizontally.
zDirection number | module:ol/array~NearestDirectionFunction (defaults to 0)

Choose whether to use tiles with a higher or lower zoom level when between integer zoom levels. See module:ol/tilegrid/TileGrid~TileGrid#getZForResolution.
Fires:

Extends

Methods

changed() inherited

Observable.js, line 70

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

clear() inherited

source/Tile.js, line 336

Remove all cached tiles from the source. The next render cycle will fetch new tiles.

dispatchEvent(event){boolean|undefined} inherited

events/Target.js, line 85

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 module:ol/events/Event~BaseEvent | string

Event object.
Returns:
false if anyone called preventDefault on the event object or if any of the listeners returned false.

get(key){*} inherited

Object.js, line 135

Gets a value.

Name Type Description
key string

Key name.
Returns:
Value.

getAttributions(){module:ol/source/Source~Attribution} inherited

source/Source.js, line 100

Get the attribution function for the source.

Returns:
Attribution function.

getAttributionsCollapsible(){boolean} inherited

source/Source.js, line 108
Returns:
Attributions are collapsible.

getKeys(){Array.<string>} inherited

Object.js, line 148

Get a list of object property names.

Returns:
List of property names.

getProjection(){module:ol/proj/Projection~Projection} inherited

source/Source.js, line 117

Get the projection of the source.

Returns:
Projection.

getProperties(){Object.<string, *>} inherited

Object.js, line 157

Get an object of all property names and values.

Returns:
Object.

getRevision(){number} inherited

Observable.js, line 81

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

Returns:
Revision.

getState(){module:ol/source/State} inherited

source/Source.js, line 134

Get the state of the source, see module:ol/source/State~State for possible states.

Returns:
State.

getTileGrid(){module:ol/tilegrid/TileGrid~TileGrid} inherited

source/Tile.js, line 256

Return the tile grid of the tile source.

Returns:
Tile grid.

getTileLoadFunction(){module:ol/Tile~LoadFunction} inherited

source/UrlTile.js, line 98

Return the tile load function of the source.

Returns:
TileLoadFunction

getTileUrlFunction(){module:ol/Tile~UrlFunction} inherited

source/UrlTile.js, line 107

Return the tile URL function of the source.

Returns:
TileUrlFunction

getUrls(){!Array.<string>|null} inherited

source/UrlTile.js, line 120

Return the URLs used for this source. When a tileUrlFunction is used instead of url or urls, null will be returned.

Returns:
URLs.

on(type, listener){module:ol/events~EventsKey|Array.<module:ol/events~EventsKey>} inherited

Observable.js, line 155

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.
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){module:ol/events~EventsKey|Array.<module:ol/events~EventsKey>} inherited

Observable.js, line 167

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.
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.

refresh() inherited

source/Source.js, line 156

Refreshes the source. The source will be cleared, and data from the server will be reloaded.

set(key, value, opt_silent) inherited

Object.js, line 203

Sets a value.

Name Type Description
key string

Key name.
value *

Value.
silent boolean

Update without triggering an event.

setAttributions(attributions) inherited

source/Source.js, line 167

Set the attributions of the source.

Name Type Description
attributions module:ol/source/Source~AttributionLike | undefined

Attributions. Can be passed as string, Array<string>, module:ol/source/Source~Attribution, or undefined.

setProperties(values, opt_silent) inherited

Object.js, line 223

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 Object.<string, *>

Values.
silent boolean

Update without triggering an event.

setRenderReprojectionEdges(render) inherited

source/TileImage.js, line 429

Sets whether to render reprojection edges or not (usually for debugging).

Name Type Description
render boolean

Render the edges.

setTileGridForProjection(projection, tilegrid) inherited

source/TileImage.js, line 455

Sets the tile grid to use when reprojecting the tiles to the given projection instead of the default tile grid for the projection.

This can be useful when the default tile grid cannot be created (e.g. projection has no extent defined) or for optimization reasons (custom tile size, resolutions, ...).

Name Type Description
projection module:ol/proj~ProjectionLike

Projection.
tilegrid module:ol/tilegrid/TileGrid~TileGrid

Tile grid to use for the projection.

setTileLoadFunction(tileLoadFunction) inherited

source/UrlTile.js, line 156

Set the tile load function of the source.

Name Type Description
tileLoadFunction module:ol/Tile~LoadFunction

Tile load function.

setTileUrlFunction(tileUrlFunction, key) inherited

source/UrlTile.js, line 168

Set the tile URL function of the source.

Name Type Description
tileUrlFunction module:ol/Tile~UrlFunction

Tile URL function.
key string

Optional new tile key for the source.

setUrl(url) inherited

source/UrlTile.js, line 183

Set the URL to use for requests.

Name Type Description
url string

URL.

setUrls(urls) inherited

source/UrlTile.js, line 194

Set the URLs to use for requests.

Name Type Description
urls Array.<string>

URLs.

un(type, listener) inherited

Observable.js, line 176

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.

unset(key, opt_silent) inherited

Object.js, line 247

Unsets a property.

Name Type Description
key string

Key name.
silent boolean

Unset without triggering an event.