require(["esri/layers/PointCloudLayer"], (PointCloudLayer) => { /* code goes here */ });
import PointCloudLayer from "@arcgis/core/layers/PointCloudLayer.js";
esri/layers/PointCloudLayer
The PointCloudLayer is designed for visualizing large collections of points in a SceneView.
Point cloud data is post-processed spatially organized lidar data that consists of large collections of 3D points. Elevations for the ground, buildings, forest canopy, highway overpasses, and anything else captured during the lidar survey make up the point cloud data. This layer type creates fast visualizations of point cloud data in the browser.
The Scene Service is identified by the URL of the ArcGIS Server REST resource:
let pointCloudLayer = new PointCloudLayer({
url: "https://tiles.arcgis.com/tiles/V6ZHFr6zdgNZuVG0/arcgis/rest/services/BARNEGAT_BAY_LiDAR_UTM/SceneServer"
});
If the point cloud service is requested from a different domain, a CORS enabled server or a proxy is required.
- See also
Constructors
-
Parameterproperties Objectoptional
See the properties for a list of all the properties that may be passed into the constructor.
Example// Typical usage let pointCloudLayer = new PointCloudLayer({ url: "https://tiles.arcgis.com/tiles/V6ZHFr6zdgNZuVG0/arcgis/rest/services/BARNEGAT_BAY_LiDAR_UTM/SceneServer" });
Property Overview
Name | Type | Summary | Class |
---|---|---|---|
An authorization string used to access a resource or service. | PointCloudLayer | ||
The copyright text as defined by the scene service. | PointCloudLayer | ||
A list of custom parameters appended to the URL of all resources fetched by the layer. | PointCloudLayer | ||
The name of the class. | Accessor | ||
Specifies how points are placed on the vertical axis (z). | PointCloudLayer | ||
An array of fields accessible in the layer. | PointCloudLayer | ||
A convenient property that can be used to make case-insensitive lookups for a field by name. | PointCloudLayer | ||
An array of pointCloudFilters used to filter points. | PointCloudLayer | ||
The full extent of the layer. | Layer | ||
The unique ID assigned to the layer. | Layer | ||
The layer ID, or layer index, of a Scene Service layer. | PointCloudLayer | ||
Indicates whether the layer will be included in the legend. | PointCloudLayer | ||
Indicates how the layer should display in the LayerList widget. | Layer | ||
Indicates whether the layer's resources have loaded. | Layer | ||
The Error object returned if an error occurred while loading. | Layer | ||
Represents the status of a load operation. | Layer | ||
A list of warnings which occurred while loading. | Layer | ||
The maximum scale (most zoomed in) at which the layer is visible in the view. | PointCloudLayer | ||
The minimum scale (most zoomed out) at which the layer is visible in the view. | PointCloudLayer | ||
An array of field names from the service to include with each feature. | PointCloudLayer | ||
The parent to which the layer belongs. | Layer | ||
PointCloudLayer | |||
Indicates whether to display popups when points in the layer are clicked. | PointCloudLayer | ||
The popup template for the layer. | PointCloudLayer | ||
The portal item from which the layer is loaded. | PointCloudLayer | ||
The renderer assigned to the layer. | PointCloudLayer | ||
The spatial reference of the layer. | PointCloudLayer | ||
The title of the layer used to identify it in places such as the Legend and LayerList widgets. | PointCloudLayer | ||
For PointCloudLayer the type is always "point-cloud". | PointCloudLayer | ||
The URL of the REST endpoint of the layer or scene service. | PointCloudLayer | ||
The version of the scene service specification used for this service. | PointCloudLayer | ||
Specifies a fixed time extent during which a layer should be visible. | Layer | ||
Indicates if the layer is visible in the View. | Layer |
Property Details
-
Since: ArcGIS Maps SDK for JavaScript 4.20PointCloudLayer since 4.2, apiKey added at 4.20. -
An authorization string used to access a resource or service. API keys are generated and managed in the portal. An API key is tied explicitly to an ArcGIS account; it is also used to monitor service usage. Setting a fine-grained API key on a specific class overrides the global API key.
Example// set the api key to access a protected service const layer = new FeatureLayer({ url: serviceUrl, apiKey: "YOUR_API_KEY" });
-
copyright
copyright String
-
The copyright text as defined by the scene service.
-
Since: ArcGIS Maps SDK for JavaScript 4.18PointCloudLayer since 4.2, customParameters added at 4.18. -
A list of custom parameters appended to the URL of all resources fetched by the layer. It's an object with key-value pairs where value is a string. The layer's
refresh()
method needs to be called if the customParameters are updated at runtime.Example// send a custom parameter to your special service let layer = new MapImageLayer({ url: serviceUrl, customParameters: { "key": "my-special-key" } });
-
elevationInfo
elevationInfo Object
Since: ArcGIS Maps SDK for JavaScript 4.4PointCloudLayer since 4.2, elevationInfo added at 4.4. -
Specifies how points are placed on the vertical axis (z). This property only affects PointCloudLayers when using the
absolute-height
mode.- Properties
-
mode String
Defines how the points are placed on the vertical axis (z). Currently only
absolute-height
mode is supported.Mode Description absolute-height Points are placed at an absolute elevation (z-value) above sea level. This z-value is determined by summing up the offset
value and the point's z-value. It doesn't take the elevation of the terrain into account. This is the only supported elevation mode for a PointCloudLayer.The value is always "absolute-height".
optional An elevation offset, which is added to the vertical position of each point.
unit ElevationUnit|null|undefinedThe unit for
offset
values.
-
An array of fields accessible in the layer. The most common fields for PointCloudLayers are described more in detail in the following table:
Name Comment ELEVATION Check the LAS Specification for details. INTENSITY Check the LAS Specification for details. CLASS_CODE Get the list with the class label with PointCloudLayer.queryCachedStatistics. RGB The individual RGB channels (uint8) are packed into a single uint32 value. See example for decode. RETURNS Bits 0-5 for Return Number and Number of Returns. See example for decode. FLAGS Check the LAS Specification for details. Example// decode the rgb value with Arcade: var rgb = $feature.RGB; var red = Floor(rgb/65536,0); var green = Floor((rgb-(red*65536))/256,0); var blue = rgb-(red*65536)-(green*256); return "rgb(" + red + "," + green + "," + blue + ")"; // decode the returns value with Arcade: var returnnumber = $feature.RETURNS % 16; var numberofreturns = Floor($feature.RETURNS / 16) return returnnumber + " / " + numberofreturns;
-
fieldsIndex
fieldsIndex FieldsIndexreadonly
Since: ArcGIS Maps SDK for JavaScript 4.13PointCloudLayer since 4.2, fieldsIndex added at 4.13. -
A convenient property that can be used to make case-insensitive lookups for a field by name. It can also provide a list of the date fields in a layer.
Example// lookup a field by name. name is case-insensitive const field = layer.fieldsIndex.get("SoMeFiEld"); if (field) { console.log(field.name); // SomeField }
-
filters
filters Array<(PointCloudValueFilter|PointCloudReturnFilter|PointCloudBitfieldFilter)>
Since: ArcGIS Maps SDK for JavaScript 4.10PointCloudLayer since 4.2, filters added at 4.10. -
An array of pointCloudFilters used to filter points. Only the points that satisfy all the filters are displayed in the view. There are two types of filters that can be set: PointCloudValueFilter filters points based on classification values and PointCloudReturnFilter filters points based on return values.
Example// filter out points that don't belong to ground or building const pcLayer = new PointCloudLayer({ ..., filters: [{ type: "value", field: "CLASS_CODE", mode: "include", // values include ground(2) and building(6) values: [2, 6] }] });
-
Inherited from Layer
-
The full extent of the layer. By default, this is worldwide. This property may be used to set the extent of the view to match a layer's extent so that its features appear to fill the view. See the sample snippet below.
Example// Once the layer loads, set the view's extent to the layer's fullextent layer.when(function(){ view.extent = layer.fullExtent; });
-
layerId
layerId Number
-
The layer ID, or layer index, of a Scene Service layer. This is particularly useful when loading a single layer with the portalItem property from a service containing multiple layers. You can specify this value in one of two scenarios:
- When loading the layer via the portalItem property.
- When pointing the layer url directly to the Scene Service.
If a layerId is not specified in either of the above scenarios, then the first layer in the service (
layerId = 0
) is selected.Examples// while these examples use a SceneLayer, the same pattern can be // used for other layers that may be loaded from portalItem ids // loads the third layer in the given Portal Item let layer = new SceneLayer({ portalItem: { id: "73df987984b24094b848d580eb83b0fb" }, layerId: 2 });
// If not specified, the first layer (layerId: 0) will be returned let layer = new SceneLayer({ portalItem: { id: "73df987984b24094b848d580eb83b0fb" } });
// Can also be used if URL points to service and not layer let layer = new SceneLayer({ url: "https://scenesampleserverdev.arcgis.com/arcgis/rest/services/Hosted/DevA_Trees/SceneServer", layerId: 0 // Notice that the url doesn't end with /2 });
// This code returns the same layer as the previous snippet let layer = new SceneLayer({ url: "https://scenesampleserverdev.arcgis.com/arcgis/rest/services/Hosted/DevA_Trees/SceneServer/layers/0", // The layer id is specified in the URL });
-
legendEnabled
legendEnabled Boolean
Since: ArcGIS Maps SDK for JavaScript 4.5PointCloudLayer since 4.2, legendEnabled added at 4.5. -
Indicates whether the layer will be included in the legend.
- Default Value:true
-
listMode
InheritedPropertylistMode String
Inherited from Layer -
Indicates how the layer should display in the LayerList widget. The possible values are listed below.
Value Description show The layer is visible in the table of contents. hide The layer is hidden in the table of contents. hide-children If the layer is a GroupLayer, BuildingSceneLayer, KMLLayer, MapImageLayer, TileLayer or WMSLayer, hide the children layers from the table of contents. Possible Values:"show" |"hide" |"hide-children"
- Default Value:"show"
-
loadStatus
InheritedPropertyloadStatus Stringreadonly
Inherited from Layer -
Represents the status of a load operation.
Value Description not-loaded The object's resources have not loaded. loading The object's resources are currently loading. loaded The object's resources have loaded without errors. failed The object's resources failed to load. See loadError for more details. Possible Values:"not-loaded" |"loading" |"failed" |"loaded"
- Default Value:not-loaded
-
Inherited from Layer
-
A list of warnings which occurred while loading.
-
maxScale
maxScale Number
-
The maximum scale (most zoomed in) at which the layer is visible in the view. If the map is zoomed in beyond this scale, the layer will not be visible. A value of
0
means the layer does not have a maximum scale. The maxScale value should always be smaller than the minScale value, and greater than or equal to the service specification.- Default Value:0
Examples// The layer will not be visible when the view is zoomed in beyond a scale of 1:1,000 layer.maxScale = 1000;
// The layer's visibility is not restricted to a maximum scale. layer.maxScale = 0;
-
minScale
minScale Number
-
The minimum scale (most zoomed out) at which the layer is visible in the view. If the map is zoomed out beyond this scale, the layer will not be visible. A value of
0
means the layer does not have a minimum scale. The minScale value should always be larger than the maxScale value, and lesser than or equal to the service specification.- Default Value:0
Examples// The layer will not be visible when the view is zoomed out beyond a scale of 1:3,000,000 layer.minScale = 3000000;
// The layer's visibility is not restricted to a minimum scale. layer.minScale = 0;
-
An array of field names from the service to include with each feature. To fetch the values from all fields in the layer, use
["*"]
. Fields specified inoutFields
will be requested alongside with required fields for rendering and filtering. The required fields andoutFields
are used to populate PointCloudLayerView.availableFields.- Default Value:null
- See also
Examples// Includes all fields from the service in the layer pcl.outFields = ["*"];
// Get the specified fields from the service in the layer // These fields will be added to FeatureLayerView.availableFields // along with rendering and labeling fields. Use these fields // for client-side filtering and querying. pcl.outFields = ["ELEVATION", "RGB", "CLASS_CODE];
-
parent
InheritedPropertyparent Map |Basemap |Ground |GroupLayer |CatalogDynamicGroupLayer |CatalogLayer
Inherited from LayerSince: ArcGIS Maps SDK for JavaScript 4.27Layer since 4.0, parent added at 4.27. -
The parent to which the layer belongs.
-
persistenceEnabled
persistenceEnabled Boolean
Since: ArcGIS Maps SDK for JavaScript 4.28PointCloudLayer since 4.2, persistenceEnabled added at 4.28. -
- Default Value:true
-
popupEnabled
popupEnabled Boolean
Since: ArcGIS Maps SDK for JavaScript 4.13PointCloudLayer since 4.2, popupEnabled added at 4.13. -
Indicates whether to display popups when points in the layer are clicked. The layer needs to have a popupTemplate to define what information should be displayed in the popup. Alternatively, a default popup template may be automatically used if Popup.defaultPopupTemplateEnabled is set to
true
.- Default Value:true
- See also
-
popupTemplate
popupTemplate PopupTemplateautocast
Since: ArcGIS Maps SDK for JavaScript 4.13PointCloudLayer since 4.2, popupTemplate added at 4.13. -
The popup template for the layer. When set on the layer, the
popupTemplate
allows users to access attributes and display their values in the view's popup when a feature is selected using text and/or charts. See the PointCloudLayer.fields for the most common attributes information. See the PopupTemplate sample for an example of how PopupTemplate interacts with a FeatureLayer. Setting a PopupTemplate on this layer type is done in the same way as a FeatureLayer.A default popup template is automatically used if no
popupTemplate
has been defined when Popup.defaultPopupTemplateEnabled is set totrue
.- See also
-
portalItem
portalItem PortalItem |null |undefined
-
The portal item from which the layer is loaded. If the portal item references a Feature Service or Scene Service, then you can specify a single layer to load with the layerId property.
Beginning with version 4.17, it is possible to load tables from feature service items hosted in ArcGIS Online and ArcGIS Enterprise. This only applies to feature layers, and will successfully load if FeatureLayer.isTable returns
true
.Examples// While this example uses FeatureLayer, this same pattern can be // used for other layers that may be loaded from portalItem ids. const layer = new FeatureLayer({ portalItem: { // autocasts as new PortalItem() id: "caa9bd9da1f4487cb4989824053bb847" } // the first layer in the service is returned });
// Set hostname when using an on-premise portal (default is ArcGIS Online) // esriConfig.portalUrl = "http://myHostName.esri.com/arcgis"; // While this example uses FeatureLayer, this same pattern can be // used for SceneLayers. const layer = new FeatureLayer({ portalItem: { // autocasts as new PortalItem() id: "8d26f04f31f642b6828b7023b84c2188" }, // loads the third item in the given feature service layerId: 2 });
// Initialize GeoJSONLayer by referencing a portalItem id pointing to geojson file. const layer = new GeoJSONLayer({ portalItem: new PortalItem({ id: "81e769cd7031482797e1b0768f23c7e1", // optionally define the portal, of the item. // if not specified, the default portal defined is used. // see https://developers.arcgis.com/javascript/latest/api-reference/esri-config.html#portalUrl portal: new Portal({ url: "https://jsapi.maps.arcgis.com/" }) } });
// This snippet loads a table hosted in ArcGIS Online. const table = new FeatureLayer({ portalItem: { // autocasts as esri/portal/PortalItem id: "123f4410054b43d7a0bacc1533ceb8dc" } }); // Before adding the table to the map, it must first be loaded and confirm it is the right type. table.load().then(function() { if (table.isTable) { map.tables.add(table); } });
-
renderer
renderer PointCloudRendererautocast
-
The renderer assigned to the layer. The renderer defines how to visualize each point in the layer.
Example// all points in the layer will be colorized with the RGB attribute layer.renderer = { type: "point-cloud-rgb", // autocasts as new PointCloudRGBRenderer() field: "RGB" };
-
spatialReference
spatialReference SpatialReferenceautocast
-
The spatial reference of the layer.
-
The title of the layer used to identify it in places such as the Legend and LayerList widgets.
When loading a layer by service url, the title is derived from the service name. If the service has several layers, then the title of each layer will be the concatenation of the service name and the layer name. When the layer is loaded from a portal item, the title of the portal item will be used instead. Finally, if a layer is loaded as part of a webmap or a webscene, then the title of the layer as stored in the webmap/webscene will be used.
-
type
type Stringreadonly
-
For PointCloudLayer the type is always "point-cloud".
-
url
url String
-
The URL of the REST endpoint of the layer or scene service. The URL may either point to a resource on ArcGIS Enterprise or ArcGIS Online.
The layer may be specified using the layerId property when the url points directly to a service and not a specific layer. If layerId is not specified, then it will default to the first layer in the service.
Examples// Layer from Scene Service on ArcGIS Server let sceneLayer = new SceneLayer({ url: "https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/Paris_3D_Local_WSL2/SceneServer/layers/0" });
// Can also be used if URL points to service and not layer let layer = new SceneLayer({ // Notice that the url doesn't end with /0 url: "https://scenesampleserverdev.arcgis.com/arcgis/rest/services/Hosted/DevA_Trees/SceneServer", layerId: 0 });
-
version
version Objectreadonly
-
The version of the scene service specification used for this service.
- Properties
- See also
Example// Prints the version to the console - e.g. 1.4, 1.5, etc. console.log(layer.version.versionString);
-
visibilityTimeExtent
InheritedPropertyvisibilityTimeExtent TimeExtent |null |undefinedautocast
Inherited from LayerSince: ArcGIS Maps SDK for JavaScript 4.30Layer since 4.0, visibilityTimeExtent added at 4.30. -
Specifies a fixed time extent during which a layer should be visible. This property can be used to configure a layer that does not have time values stored in an attribute field to work with time. Once configured, the TimeSlider widget will display the layer within the set time extent. In the case that only one of the start or end date values are available, the layer remains visible indefinitely in the direction where there is no time value.
Aerial imagery can capture seasonal variations in vegetation, water bodies, and land use patterns. For example, in agricultural regions, aerial imageries taken during different growing seasons provide insights into crop health and productivity. Defining a fixed time extent on imageries from specific time periods provides temporal context and facilitates focused analysis based on specific time periods or events.
- Default Value:null
- See also
-
visible
InheritedPropertyvisible Boolean
Inherited from Layer -
Indicates if the layer is visible in the View. When
false
, the layer may still be added to a Map instance that is referenced in a view, but its features will not be visible in the view.- Default Value:true
Example// The layer is no longer visible in the view layer.visible = false;
Method Overview
Name | Return Type | Summary | Class |
---|---|---|---|
Adds one or more handles which are to be tied to the lifecycle of the object. | Accessor | ||
Cancels a load() operation if it is already in progress. | Layer | ||
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. | Layer | ||
Creates a default popup template for the layer, populated with all the fields of the layer. | PointCloudLayer | ||
Destroys the layer and any associated resources (including its portalItem, if it is a property on the layer). | Layer | ||
Emits an event on the instance. | Layer | ||
Fetches custom attribution data for the layer when it becomes available. | Layer | ||
Returns the Domain associated with the given field name. | PointCloudLayer | ||
Indicates whether there is an event listener on the instance that matches the provided event name. | Layer | ||
Returns true if a named group of handles exist. | Accessor | ||
| Layer | ||
| Layer | ||
| Layer | ||
Loads the resources referenced by this class. | Layer | ||
Registers an event handler on the instance. | Layer | ||
Queries cached statistics from the service for a given field. | PointCloudLayer | ||
Removes a group of handles owned by the object. | Accessor | ||
| Layer |
Method Details
-
Inherited from Accessor
Since: ArcGIS Maps SDK for JavaScript 4.25Accessor since 4.0, addHandles added at 4.25. -
Adds one or more handles which are to be tied to the lifecycle of the object. The handles will be removed when the object is destroyed.
// Manually manage handles const handle = reactiveUtils.when( () => !view.updating, () => { wkidSelect.disabled = false; }, { once: true } ); this.addHandles(handle); // Destroy the object this.destroy();
ParametershandleOrHandles WatchHandle|WatchHandle[]Handles marked for removal once the object is destroyed.
groupKey *optionalKey identifying the group to which the handles should be added. All the handles in the group can later be removed with Accessor.removeHandles(). If no key is provided the handles are added to a default group.
-
Inherited from Layer
-
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. This method is used internally and there is no use case for invoking it directly.
Parametersview *The parent view.
options ObjectoptionalAn object specifying additional options. See the object specification table below for the required properties of this object.
Specificationsignal AbortSignaloptionalA signal to abort the creation of the layerview.
Returns- See also
-
createPopupTemplate
createPopupTemplate(options){PopupTemplate}
Since: ArcGIS Maps SDK for JavaScript 4.13PointCloudLayer since 4.2, createPopupTemplate added at 4.13. -
Creates a default popup template for the layer, populated with all the fields of the layer. The field CLASS_CODE is decoded with the category name. The field RGB describes rgb with decimal-codes. The field RETURNS is decoded with the number of returns out of total like (1/3), which shows number 1 out of 3.
Starting with version 4.28,
date
fields are formatted using theshort-date-short-time
preset dateFormat rather thanlong-month-day-year
in popup templates created with thecreatePopupTemplate()
method. For example, previously a date that may have appeared as"December 30, 1997"
will now appear as"12/30/1997 6:00 PM"
.Parameteroptions CreatePopupTemplateOptionsoptionalOptions for creating the popup template.
ReturnsType Description PopupTemplate The popup template, or null
if the layer does not have any fields.
-
Inherited from Layer
Since: ArcGIS Maps SDK for JavaScript 4.17Layer since 4.0, destroy added at 4.17. -
Destroys the layer and any associated resources (including its portalItem, if it is a property on the layer). The layer can no longer be used once it has been destroyed.
The destroyed layer will be removed from its parent object like Map, WebMap, WebScene, Basemap, Ground, or GroupLayer.
-
emit
InheritedMethodemit(type, event){Boolean}
Inherited from LayerSince: ArcGIS Maps SDK for JavaScript 4.5Layer since 4.0, emit added at 4.5. -
Emits an event on the instance. This method should only be used when creating subclasses of this class.
ReturnsType Description Boolean true
if a listener was notified
-
Inherited from Layer
-
Fetches custom attribution data for the layer when it becomes available.
Returns
-
getFieldDomain
getFieldDomain(fieldName){Domain}
Since: ArcGIS Maps SDK for JavaScript 4.13PointCloudLayer since 4.2, getFieldDomain added at 4.13. -
Returns the Domain associated with the given field name. The domain can be either a CodedValueDomain or RangeDomain.
ParameterfieldName StringName of the field.
ReturnsType Description Domain The Domain object associated with the given field name for the given feature.
-
hasEventListener
InheritedMethodhasEventListener(type){Boolean}
Inherited from Layer -
Indicates whether there is an event listener on the instance that matches the provided event name.
Parametertype StringThe name of the event.
ReturnsType Description Boolean Returns true if the class supports the input event.
-
hasHandles
InheritedMethodhasHandles(groupKey){Boolean}
Inherited from AccessorSince: ArcGIS Maps SDK for JavaScript 4.25Accessor since 4.0, hasHandles added at 4.25. -
Returns true if a named group of handles exist.
ParametergroupKey *optionalA group key.
ReturnsType Description Boolean Returns true
if a named group of handles exist.Example// Remove a named group of handles if they exist. if (obj.hasHandles("watch-view-updates")) { obj.removeHandles("watch-view-updates"); }
-
isFulfilled
InheritedMethodisFulfilled(){Boolean}
Inherited from Layer -
isFulfilled()
may be used to verify if creating an instance of the class is fulfilled (either resolved or rejected). If it is fulfilled,true
will be returned.ReturnsType Description Boolean Indicates whether creating an instance of the class has been fulfilled (either resolved or rejected).
-
isRejected
InheritedMethodisRejected(){Boolean}
Inherited from Layer -
isRejected()
may be used to verify if creating an instance of the class is rejected. If it is rejected,true
will be returned.ReturnsType Description Boolean Indicates whether creating an instance of the class has been rejected.
-
isResolved
InheritedMethodisResolved(){Boolean}
Inherited from Layer -
isResolved()
may be used to verify if creating an instance of the class is resolved. If it is resolved,true
will be returned.ReturnsType Description Boolean Indicates whether creating an instance of the class has been resolved.
-
load
InheritedMethodload(signal){Promise}
Inherited from Layer -
Loads the resources referenced by this class. This method automatically executes for a View and all of the resources it references in Map if the view is constructed with a map instance.
This method must be called by the developer when accessing a resource that will not be loaded in a View.
The
load()
method only triggers the loading of the resource the first time it is called. The subsequent calls return the same promise.It's possible to provide a
signal
to stop being interested into aLoadable
instance load status. When the signal is aborted, the instance does not stop its loading process, only cancelLoad can abort it.Parametersignal AbortSignaloptionalSignal object that can be used to abort the asynchronous task. The returned promise will be rejected with an Error named
AbortError
when an abort is signaled. See also AbortController for more information on how to construct a controller that can be used to deliver abort signals.Returns
-
on
InheritedMethodon(type, listener){Object}
Inherited from Layer -
Registers an event handler on the instance. Call this method to hook an event with a listener.
ParametersReturnsType Description Object Returns an event handler with a remove()
method that should be called to stop listening for the event(s).Property Type Description remove Function When called, removes the listener from the event. Exampleview.on("click", function(event){ // event is the event handle returned after the event fires. console.log(event.mapPoint); });
-
queryCachedStatistics
queryCachedStatistics(fieldName, options){Object}
Since: ArcGIS Maps SDK for JavaScript 4.13PointCloudLayer since 4.2, queryCachedStatistics added at 4.13. -
Queries cached statistics from the service for a given field. Check for the response details the I3S PointCloud Specification
ParametersfieldName StringThe name of the field to query statistics for.
options ObjectoptionalAn object with the following properties.
Specificationsignal AbortSignaloptionalSignal object that can be used to abort the asynchronous task. The returned promise will be rejected with an Error named
AbortError
when an abort is signaled. See also AbortController for more information on how to construct a controller that can be used to deliver abort signals.ReturnsType Description Object The statistics document. Examplelayer.queryCachedStatistics("ELEVATION") .then(function(statistics) { console.log(statistics); });
-
Inherited from Accessor
Since: ArcGIS Maps SDK for JavaScript 4.25Accessor since 4.0, removeHandles added at 4.25. -
Removes a group of handles owned by the object.
ParametergroupKey *optionalA group key or an array or collection of group keys to remove.
Exampleobj.removeHandles(); // removes handles from default group obj.removeHandles("handle-group"); obj.removeHandles("other-handle-group");
-
when
InheritedMethodwhen(callback, errback){Promise}
Inherited from LayerSince: ArcGIS Maps SDK for JavaScript 4.6Layer since 4.0, when added at 4.6. -
when()
may be leveraged once an instance of the class is created. This method takes two input parameters: acallback
function and anerrback
function. Thecallback
executes when the instance of the class loads. Theerrback
executes if the instance of the class fails to load.ParametersReturnsType Description Promise Returns a new promise for the result of callback
that may be used to chain additional functions.Example// Although this example uses MapView, any class instance that is a promise may use when() in the same way let view = new MapView(); view.when(function(){ // This function will execute once the promise is resolved }, function(error){ // This function will execute if the promise is rejected due to an error });
Event Overview
Name | Type | Summary | Class |
---|---|---|---|
|
{view: View,layerView: LayerView} |
Fires after the layer's LayerView is created and rendered in a view. |
Layer |
|
{view: View,error: Error} |
Fires when an error emits during the creation of a LayerView after a layer has been added to the map. |
Layer |
|
{view: View,layerView: LayerView} |
Fires after the layer's LayerView is destroyed and no longer renders in a view. |
Layer |
Event Details
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Inherited from Layer
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Fires after the layer's LayerView is created and rendered in a view.
- Properties
- See also
Example// This function will fire each time a layer view is created for this // particular view. layer.on("layerview-create", function(event){ // The LayerView for the layer that emitted this event event.layerView; });
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Inherited from Layer
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Fires when an error emits during the creation of a LayerView after a layer has been added to the map.
- Properties
- See also
Example// This function fires when an error occurs during the creation of the layer's layerview layer.on("layerview-create-error", function(event) { console.error("LayerView failed to create for layer with the id: ", layer.id, " in this view: ", event.view); });