ImageHistogramParameters

AMD: require(["esri/rest/support/ImageHistogramParameters"], (ImageHistogramParameters) => { /* code goes here */ });
ESM: import ImageHistogramParameters from "@arcgis/core/rest/support/ImageHistogramParameters.js";
Class: esri/rest/support/ImageHistogramParameters
Inheritance: ImageHistogramParametersAccessor
Since: ArcGIS Maps SDK for JavaScript 4.20
See also

Constructors

ImageHistogramParameters

Constructor
new ImageHistogramParameters(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 name of the class.

Accessor

Input geometry that defines the area of interest for which the histograms and statistics will be computed.

ImageHistogramParameters

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

ImageHistogramParameters

Specifies the pixel size (or the resolution).

ImageHistogramParameters

Specifies the raster function from which to compute the statistics and histogram.

ImageHistogramParameters

The time extent for which to compute the statistics and histogram.

ImageHistogramParameters

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.

geometry

Property
geometry Extent |Polygon

Input geometry that defines the area of interest for which the histograms and statistics will be computed. The geometry can be an extent or a polygon.

mosaicRule

Property
mosaicRule MosaicRuleautocast

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

pixelSize

Property
pixelSize Pointautocast

Specifies the pixel size (or the resolution). 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 histogram calculation.

rasterFunction

Property
rasterFunction RasterFunctionautocast
Since: ArcGIS Maps SDK for JavaScript 4.27 ImageHistogramParameters since 4.20, rasterFunction added at 4.27.

Specifies the raster function from which to compute the statistics and histogram. The rasterFunction defines how the image should be processed. When a renderingRule is not specified, the current settings on the ImageryLayer will be used.

timeExtent

Property
timeExtent TimeExtentautocast

The time extent for which to compute the statistics and histogram. The time parameter is supported at ArcGIS Server 10.8 and later.

Method Overview

Show inherited methods Hide inherited methods
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.

ImageHistogramParameters

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.

ImageHistogramParameters

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.

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.

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