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OpenLayers v10.6.1 API - Class: ImageArcGISRest

This documentation is for OpenLayers v

. The

is v

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import ImageArcGISRest from 'ol/source/ImageArcGISRest.js';

Source for data from ArcGIS Rest services providing single, untiled images. Useful when underlying map service has labels.

If underlying map service is not using labels, take advantage of ol image caching and use TileArcGISRest data source.

new ImageArcGISRest(options)

Name Type Description attributions AttributionLike | undefined

Attributions.

crossOrigin null | string | undefined

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.

hidpi boolean (defaults to true)

Use the ol/Map#pixelRatio value when requesting the image from the remote server.

imageLoadFunction LoadFunction | undefined

Optional function to load an image given a URL.

interpolate boolean (defaults to true)

Use interpolated values when resampling. By default, linear interpolation is used when resampling. Set to false to use the nearest neighbor instead.

params Object.<string, *> | undefined

ArcGIS Rest parameters. This field is optional. Service defaults will be used for any fields not specified. FORMAT is PNG32 by default. F is IMAGE by default. TRANSPARENT is true by default. BBOX, SIZE, BBOXSR, and IMAGESR will be set dynamically. Set LAYERS to override the default service layer visibility. See https://developers.arcgis.com/rest/services-reference/export-map.htm for further reference.

projection ProjectionLike | undefined

Projection. Default is the view projection. The projection code must contain a numeric end portion separated by : or the entire code must form a valid ArcGIS SpatialReference definition.

ratio number (defaults to 1.5)

Ratio. 1 means image requests are the size of the map viewport, 2 means twice the size of the map viewport, and so on.

resolutions Array.<number> | undefined

Resolutions. If specified, requests will be made for these resolutions only.

url string | undefined

ArcGIS Rest service URL for a Map Service or Image Service. The url should include /MapServer or /ImageServer.

Fires:

• change (BaseEvent) - Generic change event. Triggered when the revision counter is increased.
• error (BaseEvent) - Generic error event. Triggered when an error occurs.
• imageloadend (ImageSourceEvent) - Triggered when an image finishes loading.
• imageloaderror (ImageSourceEvent) - Triggered if image loading results in an error.
• imageloadstart (ImageSourceEvent) - Triggered when an image starts loading.
• propertychange (ObjectEvent) - Triggered when a property is changed.

• ImageSource

dispatchEvent(event){boolean | undefined} inherited

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 BaseEvent | string

Event object.

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

Gets a value.

Name Type Description key string

Key name.

Returns: Value.

Get the attribution function for the source.

Returns: Attribution function.

getAttributionsCollapsible(){boolean} inherited

Returns: Attributions are collapsible.

Return the image load function of the source.

Returns: The image load function.

Get a list of object property names.

Returns: List of property names.

Get the user-provided params, i.e. those passed to the constructor through the "params" option, and possibly updated using the updateParams method.

Returns: Params.

Get the projection of the source.

Returns: Projection.

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

Get an object of all property names and values.

Returns: Object.

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

Returns: Revision.

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

Returns: State.

getUrl(){string | undefined}

Return the URL used for this ArcGIS source.

Returns: URL.

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.

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.

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

Sets a value.

Name Type Description key string

Key name.

value *

Value.

silent boolean | undefined

Update without triggering an event.

Set the attributions of the source.

Name Type Description attributions AttributionLike | undefined

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

setImageLoadFunction(imageLoadFunction)

Set the image load function of the source.

Name Type Description imageLoadFunction LoadFunction

Image load function.

Set the user-provided params.

Name Type Description params Object

Params.

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 | undefined

Update without triggering an event.

Set the URL to use for requests.

Name Type Description url string | undefined

URL.

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.

Unsets a property.

Name Type Description key string

Key name.

silent boolean | undefined

Unset without triggering an event.

Update the user-provided params.

Name Type Description params Object

Params.

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