UniqueValue | References | ArcGIS Maps SDK for JavaScript

import UniqueValue from "@arcgis/core/renderers/support/UniqueValue.js";

Inheritance:: UniqueValue→Accessor

Since: ArcGIS Maps SDK for JavaScript 4.25

Defines combinations of values to expect from up to three fields of categorical data in a UniqueValueRenderer. This value (or combination of values) is used to define the underlying data for a UniqueValueClass (i.e. a category) within a UniqueValueRenderer.

See also

Example

// Features with only the combination values below from
// field, field2, and field3 in the renderer
// will be represented with the symbol defined in the class.
uniqueValueClass.values = {
  value: 10,
  value2: "Republican",
  value3: "18-25"
};

Constructors

Constructor

Parameters

Parameter	Type	Description	Required
properties	`UniqueValueProperties`

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
`value`	`string \| number \| null \| undefined`
`value2`	`string \| number \| null \| undefined`
`value3`	`string \| number \| null \| undefined`

declaredClass

readonlyinherited Property

Type: string

Inherited from: Accessor

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

value

Property

Type: string | number | null | undefined

Defines a value (possibly in combination with value2 and value3) returned from the field referenced in UniqueValueRenderer.field or returned from an Arcade expression defined in UniqueValueRenderer.valueExpression to be categorized in a UniqueValueClass.

value2

Property

Type: string | number | null | undefined

Defines a value returned from the field referenced in UniqueValueRenderer.field2 to be categorized in combination with value (and possibly value3) in a UniqueValueClass.

value3

Property

Type: string | number | null | undefined

Defines a value returned from the field referenced in UniqueValueRenderer.field3 to be categorized in combination with value and value2 in a UniqueValueClass.

Methods

Method	Signature	Class
`fromJSON` inherited static	`fromJSON(json: any): any`	JSONSupportMixin
`clone` inherited	`clone(): this`	ClonableMixin
`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.

clone

inherited Method

Signature: clone (): this

Inherited from: ClonableMixin

Creates a deep clone of this object. Any properties that store values by reference will be assigned copies of the referenced values on the cloned instance.

Returns: this
A deep clone of the class instance that invoked this method.

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.