DynamicMapLayer | References | ArcGIS Maps SDK for JavaScript

import DynamicMapLayer from "@arcgis/core/rest/layerSources/DynamicMapLayer.js";

Inheritance:: DynamicMapLayer→Accessor

Since: ArcGIS Maps SDK for JavaScript 5.0

A dynamic map layer refers to a layer published in a map service that has dynamic layers enabled. This layer type may be used to create multiple Sublayer.sublayers that point to the same service layer, but are assigned different definition expressions, renderers, and other properties.

See also

Example

// Creates two sublayers that point to the same map service layer.
// Each layer presents different features in the data using
// definition expressions and renderers.
let mapImageLayer = new MapImageLayer({
  sublayers: [{
    id: 10,
    definitionExpression: "POP < 50000",
    renderer: {
      type: "class-breaks"  // autocasts as new ClassBreaksRenderer()
      // set renderer properties here
    },
    source: {
      type: "map-layer",
      mapLayerId: 0
    }
  }, {
    id: 11,
    definitionExpression: "GRADUATED_HS > 0.449",
    renderer: {
      type: "class-breaks"  // autocasts as new ClassBreaksRenderer()
      // set renderer properties here
    },
    source: {
      type: "map-layer",
      mapLayerId: 0
    }
  }]
});

Constructors

Constructor

Parameters

Parameter	Type	Description	Required
properties	`DynamicMapLayerProperties`

See the properties table for a list of all the properties that may be passed into the constructor.

Properties

Any properties can be set, retrieved or listened to. See the Watch for changes topic.

Property	Type	Class
`declaredClass` readonly inherited	`string`	Accessor
`gdbVersion`	`string`
`mapLayerId`	`number`
`type` readonly	`"map-layer"`

declaredClass

readonlyinherited Property

Type: string

Inherited from: Accessor

Since: ArcGIS Maps SDK for JavaScript 4.7

The name of the class. The declared class name is formatted as esri.folder.className.

gdbVersion

Property

Type: string

An optional property for specifying the GDB version.

mapLayerId

Property

Type: number

The Sublayer.id of the service sublayer.

type

readonly Property

Type: "map-layer"

This value is always map-layer and is inferred when the mapLayerId property is set.

Methods

Method	Signature	Class
`fromJSON` inherited static	`fromJSON(json: any): any`	JSONSupportMixin
`toJSON` inherited	`toJSON(): any`	JSONSupportMixin

fromJSON

inheritedstatic Method

Signature: fromJSON (json: any): any

Inherited from: JSONSupportMixin

Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product. The object passed into the input json parameter often comes from a response to a query operation in the REST API or a toJSON() method from another ArcGIS product. See the Using fromJSON() topic in the Guide for details and examples of when and how to use this function.

Parameters

Parameter	Type	Description	Required
json	`any`	A JSON representation of the instance in the ArcGIS format. See the ArcGIS REST API documentation for examples of the structure of various input JSON objects.

Returns: any
Returns a new instance of this class.

toJSON

inherited Method

Signature: toJSON (): any

Inherited from: JSONSupportMixin

Converts an instance of this class to its ArcGIS portal JSON representation. See the Using fromJSON() guide topic for more information.

Returns: any
The ArcGIS portal JSON representation of an instance of this class.