ImageAreaParameters

AMD: require(["esri/rest/support/ImageAreaParameters"], (ImageAreaParameters) => { /* code goes here */ });
ESM: import ImageAreaParameters from "@arcgis/core/rest/support/ImageAreaParameters.js";
Class: esri/rest/support/ImageAreaParameters
Inheritance: ImageAreaParameters Accessor
Since: ArcGIS Maps SDK for JavaScript 4.26

Input parameters used by the ImageryLayer.measureAreaAndPerimeter() and imageService.measureAreaAndPerimeter() methods to perform imagery area and perimeter mensuration.

See also

Constructors

ImageAreaParameters

Constructor
new ImageAreaParameters(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 Working with Properties topic.
Show inherited properties Hide inherited properties
Name Type Summary Class

The area unit used for an area calculation.

ImageAreaParameters

The name of the class.

Accessor

The extent or polygon geometry used to perform the area and perimeter measurement.

ImageAreaParameters

When true, this method calculates the 3D measurements for the area and perimeter of a given geometry on an image service.

ImageAreaParameters

Linear unit used for a perimeter calculation.

ImageAreaParameters

Specifies the mosaic rule on how individual images should be mosaicked when the measure is computed.

ImageAreaParameters

Specifies the pixel size.

ImageAreaParameters

The string value representing the type of imagery mensuration.

ImageAreaParameters

Property Details

areaUnit

Property
areaUnit String

The area unit used for an area calculation.

Possible Values:"square-millimeters" |"square-centimeters" |"square-decimeters" |"square-meters" |"square-kilometers" |"square-inches" |"square-feet" |"square-yards" |"square-miles" |"square-us-feet" |"acres" |"ares" |"hectares"

Default Value:"square-meters"

declaredClass

Inherited
Property
declaredClass Stringreadonly
Inherited from Accessor

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

geometry

Property
geometry Extent |Polygon

The extent or polygon geometry used to perform the area and perimeter measurement.

is3D

Property
is3D Boolean

When true, this method calculates the 3D measurements for the area and perimeter of a given geometry on an image service. The elevation surface will be incorporated when performing the calculations. 3D calculation can only be done when the layer's capabilities.mensuration.supports3D returns true.

Default Value:false

linearUnit

Property
linearUnit LengthUnit

Linear unit used for a perimeter calculation.

Default Value:"meters"

mosaicRule

Property
mosaicRule MosaicRuleautocast
Since: ArcGIS Maps SDK for JavaScript 4.27 ImageAreaParameters since 4.26, mosaicRule added at 4.27.

Specifies the mosaic rule on how individual images should be mosaicked when the measure is computed. When a mosaic rule is not specified, the current settings on the ImageryLayer will be used.

pixelSize

Property
pixelSize PixelSizeautocast
Since: ArcGIS Maps SDK for JavaScript 4.27 ImageAreaParameters since 4.26, pixelSize added at 4.27.

Specifies the pixel size. If pixel size is not specified, pixelSize will default to the base resolution of the image service. The raster at the specified pixel size in the mosaic dataset will be used for the Measure calculation.

type

Property
type readonly

The string value representing the type of imagery mensuration. The type is always area-perimeter for ImageAreaParameters.

Method Overview

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Name Return Type Summary Class

Adds one or more handles which are to be tied to the lifecycle of the object.

Accessor
*

Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product.

ImageAreaParameters

Returns true if a named group of handles exist.

Accessor

Removes a group of handles owned by the object.

Accessor

Converts an instance of this class to its ArcGIS portal JSON representation.

ImageAreaParameters

Method Details

addHandles

Inherited
Method
addHandles(handleOrHandles, groupKey)
Inherited from Accessor

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.

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

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

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.

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