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Interface GeoJSONLayer

Hierarchy

Index

Properties

blendMode

blendMode: "average" | "color-burn" | "color-dodge" | "color" | "darken" | "destination-atop" | "destination-in" | "destination-out" | "destination-over" | "difference" | "exclusion" | "hard-light" | "hue" | "invert" | "lighten" | "lighter" | "luminosity" | "minus" | "multiply" | "normal" | "overlay" | "plus" | "reflect" | "saturation" | "screen" | "soft-light" | "source-atop" | "source-in" | "source-out" | "vivid-light" | "xor"

Blend modes are used to blend layers together to create an interesting effect in a layer, or even to produce what seems like a new layer.

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Readonly capabilities

Describes the layer's supported capabilities.

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copyright

copyright: string

Copyright information for the layer.

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declaredClass

declaredClass: string

definitionExpression

definitionExpression: string

The SQL where clause used to filter features on the client.

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destroyed

destroyed: boolean

displayField

displayField: string

The name of the layer's primary display field.

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effect

effect: Effect

Effect provides various filter functions that can be performed on the layer to achieve different visual effects similar to how image filters work.

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elevationInfo

Specifies how graphics are placed on the vertical axis (z).

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featureReduction

Configures the method for reducing the number of point features in the view.

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fields

fields: Field[]

An array of fields in the layer.

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Readonly fieldsIndex

fieldsIndex: FieldsIndex

A convenient property that can be used to make case-insensitive lookups for a field by name.

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fullExtent

fullExtent: Extent

The full extent of the layer.

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geometryType

geometryType: "polygon" | "point" | "multipoint" | "polyline"

The geometry type of features in the layer.

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Readonly hasZ

hasZ: boolean

Indicates whether the client-side features in the layer have Z (elevation) values.

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id

id: string

The unique ID assigned to the layer.

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initialized

initialized: boolean

labelingInfo

labelingInfo: LabelClass[]

The label definition for this layer, specified as an array of LabelClass.

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labelsVisible

labelsVisible: boolean

Indicates whether to display labels for this layer.

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legendEnabled

legendEnabled: boolean

Indicates whether the layer will be included in the legend.

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listMode

listMode: "show" | "hide" | "hide-children"

Indicates how the layer should display in the LayerList widget.

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Readonly loadError

loadError: Error

The Error object returned if an error occurred while loading.

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Readonly loadStatus

loadStatus: "not-loaded" | "loading" | "failed" | "loaded"

Represents the status of a load operation.

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Readonly loadWarnings

loadWarnings: any[]

A list of warnings which occurred while loading.

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Readonly loaded

loaded: boolean

Indicates whether the layer's resources have loaded.

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maxScale

maxScale: number

The maximum scale (most zoomed in) at which the layer is visible in the view.

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minScale

minScale: number

The minimum scale (most zoomed out) at which the layer is visible in the view.

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objectIdField

objectIdField: string

The name of an oid field containing a unique value or identifier for each feature in the layer.

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opacity

opacity: number

The opacity of the layer.

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outFields

outFields: string[]

An array of field names from the geoJSON file to include with each feature.

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popupEnabled

popupEnabled: boolean

Indicates whether to display popups when features in the layer are clicked.

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popupTemplate

popupTemplate: PopupTemplate

The popup template for the layer.

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renderer

renderer: Renderer

The renderer assigned to the layer.

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screenSizePerspectiveEnabled

screenSizePerspectiveEnabled: boolean

Apply perspective scaling to screen-size point symbols in a SceneView.

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spatialReference

spatialReference: SpatialReference

The spatial reference of the layer.

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templates

templates: FeatureTemplate[]

An array of feature templates defined in the layer.

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timeExtent

timeExtent: TimeExtent

The layer's time extent.

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timeInfo

timeInfo: TimeInfo

TimeInfo provides information such as date fields that store start and end time for each feature and the fullTimeExtent for the layer.

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timeOffset

timeOffset: TimeInterval

A temporary offset of the time data based on a certain TimeInterval.

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title

title: string

The title of the layer used to identify it in places such as the LayerList widget.

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Readonly type

type: "geojson"

url

url: string

The URL of the GeoJSON file.

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useViewTime

useViewTime: boolean

Determines if the layer will update its temporal data based on the view's timeExtent.

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visible

visible: boolean

Indicates if the layer is visible in the View.

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Methods

Protected _get

  • _get(propertyName: string): any
  • _get<T>(propertyName: string): T
  • Parameters

    • propertyName: string

    Returns any

  • Type parameters

    • T

    Parameters

    • propertyName: string

    Returns T

Protected _set

  • Type parameters

    • T

    Parameters

    • propertyName: string
    • value: T

    Returns GeoJSONLayer

applyEdits

  • Applies edits to features in a layer.

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    Parameters

    Returns Promise<any>

cancelLoad

  • cancelLoad(): void
  • Cancels a load() operation if it is already in progress.

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    Returns void

createLayerView

  • Called by the views, such as MapView and SceneView, when the layer is added to the Map.layers collection and a layer view must be created for it.

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    Parameters

    Returns Promise<LayerView>

createPopupTemplate

  • Creates a popup template for the layer, populated with all the fields of the layer.

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    Parameters

    Returns PopupTemplate

createQuery

  • Creates query parameter object that can be used to fetch features that satisfy the layer's configurations such as definitionExpression.

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    Returns supportQuery

destroy

  • destroy(): void
  • Destroys the layer and any associated resources (including its portalItem, if it is a property on the layer).

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    Returns void

emit

  • emit(type: string, event?: any): boolean
  • Emits an event on the instance.

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    Parameters

    • type: string
    • Optional event: any

    Returns boolean

fetchAttributionData

  • fetchAttributionData(): Promise<any>
  • Fetches custom attribution data for the layer when it becomes available.

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    Returns Promise<any>

get

  • get<T>(propertyName: string): T
  • get(propertyName: string): any
  • Type parameters

    • T

    Parameters

    • propertyName: string

    Returns T

  • Parameters

    • propertyName: string

    Returns any

getField

  • getField(fieldName: string): Field
  • Returns the Field instance for a field name (case-insensitive).

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    Parameters

    • fieldName: string

    Returns Field

getFieldDomain

  • Returns the Domain associated with the given field name.

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    Parameters

    Returns Domain

hasEventListener

  • hasEventListener(type: string): boolean
  • Indicates whether there is an event listener on the instance that matches the provided event name.

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    Parameters

    • type: string

    Returns boolean

isFulfilled

  • isFulfilled(): boolean
  • isFulfilled() may be used to verify if creating an instance of the class is fulfilled (either resolved or rejected).

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    Returns boolean

isRejected

  • isRejected(): boolean
  • isRejected() may be used to verify if creating an instance of the class is rejected.

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    Returns boolean

isResolved

  • isResolved(): boolean
  • isResolved() may be used to verify if creating an instance of the class is resolved.

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    Returns boolean

load

  • load(signal?: AbortSignal): Promise<any>
  • Loads the resources referenced by this class.

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    Parameters

    • Optional signal: AbortSignal

    Returns Promise<any>

Protected notifyChange

  • notifyChange(propertyName: string): void
  • Parameters

    • propertyName: string

    Returns void

on

queryExtent

queryFeatureCount

queryFeatures

queryObjectIds

set

  • Type parameters

    • T

    Parameters

    • propertyName: string
    • value: T

    Returns GeoJSONLayer

  • Parameters

    Returns GeoJSONLayer

watch

  • Parameters

    • path: string | string[]
    • callback: WatchCallback
    • Optional sync: boolean

    Returns WatchHandle

when

  • when(callback?: Function, errback?: Function): Promise<any>
  • when() may be leveraged once an instance of the class is created.

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    Parameters

    • Optional callback: Function
    • Optional errback: Function

    Returns Promise<any>

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