BuildingSummaryStatistics | API Reference | ArcGIS Maps SDK for JavaScript 4.31

Contains statistics about the fields in all sublayers of a BuildingSceneLayer. The statistics contain the most frequent values in that layer, minimum and maximum values in case they are numeric and the sublayers where the field is available.

This class can't be instantiated, use it as part of the BuildingSceneLayer.summaryStatistics property:

// load the layer
buildingLayer.load().then(function() {
 // load the statistics on the summaryStatistics property
 // to be able to access them
 buildingLayer.summaryStatistics.load().then(function() {
   console.log(buildingLayer.summaryStatistics);
 });
});

See also

BuildingSceneLayer

Property Overview

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

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Type	Summary	Class
String	The name of the class.	Accessor
BuildingFieldStatistics []	An array of statistics on all fields in all sublayers.	BuildingSummaryStatistics
Error	The Error object returned if an error occurred while loading.	BuildingSummaryStatistics
String	Represents the status of a load operation.	BuildingSummaryStatistics
Object []	A list of warnings which occurred while loading.	BuildingSummaryStatistics

Property Details

declaredClass Inherited Property declaredClass Stringreadonly Inherited from Accessor

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

fields Property fields BuildingFieldStatistics[]

An array of statistics on all fields in all sublayers.

loadError Property loadError Errorreadonly

The Error object returned if an error occurred while loading.

Default Value:null

loadStatus Property loadStatus Stringreadonly

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"

loadWarnings Property loadWarnings Object[]readonly

A list of warnings which occurred while loading.

Method Overview

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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.	BuildingSummaryStatistics
*	Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product.	BuildingSummaryStatistics
Boolean	Returns true if a named group of handles exist.	Accessor
Boolean	`isFulfilled()` may be used to verify if creating an instance of the class is fulfilled (either resolved or rejected).	BuildingSummaryStatistics
Boolean	`isRejected()` may be used to verify if creating an instance of the class is rejected.	BuildingSummaryStatistics
Boolean	`isResolved()` may be used to verify if creating an instance of the class is resolved.	BuildingSummaryStatistics
Promise	Loads the resources referenced by this class.	BuildingSummaryStatistics
	Removes a group of handles owned by the object.	Accessor
Object	Converts an instance of this class to its ArcGIS portal JSON representation.	BuildingSummaryStatistics
Promise	`when()` may be leveraged once an instance of the class is created.	BuildingSummaryStatistics

Method Details

addHandles Inherited Method addHandles(handleOrHandles, groupKey) Inherited from Accessor Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor 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();

Parameters

handleOrHandles WatchHandle|WatchHandle []

Handles marked for removal once the object is destroyed.

groupKey *

optional

Key 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.

cancelLoad Method cancelLoad()

Cancels a load() operation if it is already in progress.

fromJSON Method fromJSON(json){*}static

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.

Parameter

json Object

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

Type	Description
*	Returns a new instance of this class.

hasHandles Inherited Method hasHandles(groupKey){Boolean} Inherited from Accessor Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, hasHandles added at 4.25.

Returns true if a named group of handles exist.

Parameter

groupKey *

optional

A group key.

Returns

Type	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 Method isFulfilled(){Boolean}

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.

Returns

Type	Description
Boolean	Indicates whether creating an instance of the class has been fulfilled (either resolved or rejected).

isRejected Method isRejected(){Boolean}

isRejected() may be used to verify if creating an instance of the class is rejected. If it is rejected, true will be returned.

Returns

Type	Description
Boolean	Indicates whether creating an instance of the class has been rejected.

isResolved Method isResolved(){Boolean}

isResolved() may be used to verify if creating an instance of the class is resolved. If it is resolved, true will be returned.

Returns

Type	Description
Boolean	Indicates whether creating an instance of the class has been resolved.

load Method load(signal){Promise}

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 a Loadable instance load status. When the signal is aborted, the instance does not stop its loading process, only cancelLoad can abort it.

Parameter

signal AbortSignal

optional

Signal 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

Type	Description
Promise	Resolves when the resources have loaded.

removeHandles Inherited Method removeHandles(groupKey) Inherited from Accessor Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, removeHandles added at 4.25.

Removes a group of handles owned by the object.

Parameter

groupKey *

optional

A group key or an array or collection of group keys to remove.

Example

obj.removeHandles(); // removes handles from default group

obj.removeHandles("handle-group");
obj.removeHandles("other-handle-group");

toJSON Method toJSON(){Object}

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

Returns

Type	Description
Object	The ArcGIS portal JSON representation of an instance of this class.

when Method when(callback, errback){Promise}

when() may be leveraged once an instance of the class is created. This method takes two input parameters: a callback function and an errback function. The callback executes when the instance of the class loads. The errback executes if the instance of the class fails to load.

Parameters

callback Function

optional

The function to call when the promise resolves.

errback Function

optional

The function to execute when the promise fails.

Returns

Type	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
});

Type Definitions

BuildingFieldStatistics Type Definition BuildingFieldStatistics Object

Summary statistics for a field in a BuildingSceneLayer. The statistics contain the most frequent values in that layer, minimum and maximum values in case they are numeric and the sublayers where the field is available.

Properties: fieldName String

Name of the field.

modelName String

Model Name of the field. This can be used to identify certain special fields, like floor number, or phase id.

label String

Label of the field.

min Number

Minimum value of the field for numeric values.

max Number

Maximum value of the field for numeric values.

mostFrequentValues String []|Number []

List of the most frequent values of the field. This is not guaranteed to be a complete list of all values.

subLayerIds Number []

List of sublayer ids where this field is available.