DimensionalDefinition | API Reference | ArcGIS Maps SDK for JavaScript 4.31

A dimensional definition defines a filter based on one variable and one dimension. You can filter multidimensional data with one or multiple dimensional slices. Instances of this class are typically used when filtering data based on slices or ranges in one or more dimensions by setting MosaicRule.multidimensionalDefinition on an ImageryLayer or the multidimensionalDefinition on an ImageryTileLayer.

For example, a single ImageryLayer may have a depth dimension storing sea temperatures for the same pixel location at various depths. Another dimension could be time where the same pixel stores multiple values based on a window of time.

The snippet in the image below renders sea temperature at the surface for a specific time in the year.

let multidimensionalDefinition = [];
multidimensionalDefinition.push(new DimensionalDefinition({
  variableName: "water_temp",
  dimensionName: "StdZ", // water depth
  values: [0], // sea surface or 0ft
  isSlice: true
}));

let mosaicRule = new MosaicRule();
mosaicRule.multidimensionalDefinition = multidimensionalDefinition;

In contrast, the following image renders sea temperature data from the same service at 5000 meters below the surface within the same time window.

let multidimensionalDefinition = [];
multidimensionalDefinition.push(new DimensionalDefinition({
  variableName: "water_temp",
  dimensionName: "StdZ", // water depth
  values: [-5000], // 5000 m below
  isSlice: true
}));

let mosaicRule = new MosaicRule();
mosaicRule.multidimensionalDefinition = multidimensionalDefinition;

See also

Constructors

DimensionalDefinition Constructor new DimensionalDefinition(properties)

Parameter

properties Object

optional

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

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
String	The dimension associated with the variable.	DimensionalDefinition
Boolean	Indicates whether the values indicate slices (rather than ranges).	DimensionalDefinition
Array<(number\|Array<number>)>	An array of single values or tuples [min, max] each defining a range of valid values along the specified dimension.	DimensionalDefinition
String	The required variable name by which to filter.	DimensionalDefinition

Property Details

declaredClass Inherited Property declaredClass Stringreadonly Inherited from Accessor Since: ArcGIS Maps SDK for JavaScript 4.7 Accessor since 4.0, declaredClass added at 4.7.

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

dimensionName Property dimensionName String

The dimension associated with the variable.

isSlice Property isSlice Boolean

Indicates whether the values indicate slices (rather than ranges).

Default Value:false

values Property values Array<(number|Array<number>)>

An array of single values or tuples [min, max] each defining a range of valid values along the specified dimension.

Example

// -10 is the minimum valid value and 10 is the maximum valid value
definition.values = [[-10, 10]];

variableName Property variableName String

The required variable name by which to filter.

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
DimensionalDefinition	Creates a clone of the DimensionalDefinition object.	DimensionalDefinition
*	Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product.	DimensionalDefinition
Boolean	Returns true if a named group of handles exist.	Accessor
	Removes a group of handles owned by the object.	Accessor
Object	Converts an instance of this class to its ArcGIS portal JSON representation.	DimensionalDefinition

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.

clone Method clone(){DimensionalDefinition}

Creates a clone of the DimensionalDefinition object.

Returns

Type	Description
DimensionalDefinition	A clone of the object that invoked this method.

Example

// Creates a clone of the DimensionalDefinition
let dimensionalDefinition1 = dimensionalDefinition.clone();

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");
}

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.