OpenLayers 3

Class: XYZ

ol.source.XYZ

Layer source for tile data with URLs in a set XYZ format that are defined in a URL template. By default, this follows the widely-used Google grid where x 0 and y 0 are in the top left. Grids like TMS where x 0 and y 0 are in the bottom left can be used by using the {-y} placeholder in the URL template, so long as the source does not have a custom tile grid. In this case, ol.source.TileImage can be used with a tileUrlFunction such as:

tileUrlFunction: function(coordinate) { return 'http://mapserver.com/' + coordinate[0] + '/' + coordinate[1] + '/' + coordinate[2] + '.png'; }

new ol.source.XYZ(options)

src/ol/source/xyzsource.js, line 28
Name Type Description
options

XYZ options.

Name Type Description
attributions olx.source.AttributionOption | undefined

Attributions.
cacheSize number | undefined experimental

Cache size. Default is 2048.
crossOrigin null | string | undefined

The crossOrigin attribute for loaded images. Note that you must provide a crossOrigin value if you are using the WebGL renderer or 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.
logo string | olx.LogoOptions | undefined

Logo.
opaque boolean | undefined experimental

Whether the layer is opaque.
projection ol.proj.ProjectionLike experimental

Projection. Default is EPSG:3857.
reprojectionErrorThreshold number | undefined experimental

Maximum allowed reprojection error (in pixels). Default is 0.5. Higher values can increase reprojection performance, but decrease precision.
maxZoom number | undefined experimental

Optional max zoom level. Default is 18.
minZoom number | undefined experimental

Optional min zoom level. Default is 0.
tileGrid ol.tilegrid.TileGrid | undefined experimental

Tile grid.
tileLoadFunction ol.TileLoadFunctionType | undefined experimental

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

function(imageTile, src) {
  imageTile.getImage().src = src;
};
tilePixelRatio number | undefined experimental

The pixel ratio used by the tile service. For example, if the tile service advertizes 256px by 256px tiles but actually sends 512px by 512px images (for retina/hidpi devices) then tilePixelRatio should be set to 2. Default is 1.
tileSize number | ol.Size | undefined experimental

The tile size used by the tile service. Default is [256, 256] pixels.
tileUrlFunction ol.TileUrlFunctionType | undefined experimental

Optional function to get tile URL given a tile coordinate and the projection. Required if url or urls are not provided.
url string | undefined

URL template. Must include {x}, {y} or {-y}, and {z} placeholders. A {?-?} template pattern, for example subdomain{a-f}.domain.com, may be used instead of defining each one separately in the urls option.
urls Array.<string> | undefined

An array of URL templates.
wrapX boolean | undefined experimental

Whether to wrap the world horizontally. Default is true.
Fires:

Subclasses

Extends

Methods

changed() inherited experimental

src/ol/observable.js, line 57

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

dispatchEvent(event) inherited experimental

src/ol/observable.js, line 81

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 148

Gets a value.

Name Type Description
key string

Key name.
Returns:
Value.

getAttributions(){Array.<ol.Attribution>} inherited

src/ol/source/source.js, line 134

Get the attributions of the source.

Returns:
Attributions.

getKeys(){Array.<string>} inherited

src/ol/object.js, line 162

Get a list of object property names.

Returns:
List of property names.
src/ol/source/source.js, line 144

Get the logo of the source.

Returns:
Logo.

getProjection(){ol.proj.Projection} inherited experimental

src/ol/source/source.js, line 154

Get the projection of the source.

Returns:
Projection.

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

src/ol/object.js, line 172

Get an object of all property names and values.

Returns:
Object.

getRevision(){number} inherited experimental

src/ol/observable.js, line 90

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

Returns:
Revision.

getState(){ol.source.State} inherited experimental

src/ol/source/source.js, line 170

Get the state of the source, see ol.source.State for possible states.

Returns:
State.

getTileGrid(){ol.tilegrid.TileGrid} inherited

src/ol/source/tilesource.js, line 211

Return the tile grid of the tile source.

Returns:
Tile grid.

getTileLoadFunction(){ol.TileLoadFunctionType} inherited experimental

src/ol/source/urltilesource.js, line 100

Return the tile load function of the source.

Returns:
TileLoadFunction

getTileUrlFunction(){ol.TileUrlFunctionType} inherited experimental

src/ol/source/urltilesource.js, line 110

Return the tile URL function of the source.

Returns:
TileUrlFunction

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

src/ol/source/urltilesource.js, line 122

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, opt_this){ol.events.Key|Array.<ol.events.Key>} inherited

src/ol/observable.js, line 105

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.events.Key|Array.<ol.events.Key>} inherited

src/ol/observable.js, line 130

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.

refresh() inherited experimental

src/ol/source/source.js, line 187

Refreshes the source and finally dispatches a 'change' event.

set(key, value, opt_silent) inherited

src/ol/object.js, line 197

Sets a value.

Name Type Description
key string

Key name.
value *

Value.
silent boolean

Update without triggering an event.

setAttributions(attributions) inherited experimental

src/ol/source/source.js, line 199

Set the attributions of the source.

Name Type Description
attributions

Attributions. Can be passed as string, Array<string>, ol.Attribution, Array<ol.Attribution> or undefined.

Type Description

setProperties(values, opt_silent) inherited

src/ol/object.js, line 217

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 experimental

src/ol/source/tileimagesource.js, line 327

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

Name Type Description
render boolean

Render the edges.

setTileGridForProjection(projection, tilegrid) inherited experimental

src/ol/source/tileimagesource.js, line 352

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 ol.proj.ProjectionLike

Projection.
tilegrid ol.tilegrid.TileGrid

Tile grid to use for the projection.

setTileLoadFunction(tileLoadFunction) inherited experimental

src/ol/source/urltilesource.js, line 158

Set the tile load function of the source.

Name Type Description
tileLoadFunction ol.TileLoadFunctionType

Tile load function.

setTileUrlFunction(tileUrlFunction) inherited experimental

src/ol/source/urltilesource.js, line 170

Set the tile URL function of the source.

Name Type Description
tileUrlFunction ol.TileUrlFunctionType

Tile URL function.

setUrl(url) inherited

src/ol/source/urltilesource.js, line 185

Set the URL to use for requests.

Name Type Description
url string

URL.

setUrls(urls) inherited

src/ol/source/urltilesource.js, line 198

Set the URLs to use for requests.

Name Type Description
urls Array.<string>

URLs.

un(type, listener, opt_this) inherited

src/ol/observable.js, line 153

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.

unByKey(key) inherited

src/ol/observable.js, line 174

Removes an event listener using the key returned by on() or once(). Note that using the ol.Observable.unByKey static function is to be preferred.

Name Type Description
key ol.events.Key | Array.<ol.events.Key>

The key returned by on() or once() (or an array of keys).

unset(key, opt_silent) inherited

src/ol/object.js, line 231

Unsets a property.

Name Type Description
key string

Key name.
silent boolean

Unset without triggering an event.