DimensionAnalysis

ESM: import DimensionAnalysis from "@arcgis/core/analysis/DimensionAnalysis.js";
CDN: const DimensionAnalysis = await $arcgis.import("@arcgis/core/analysis/DimensionAnalysis.js");
Class: @arcgis/core/analysis/DimensionAnalysis
Inheritance: DimensionAnalysisAnalysisAccessor
Since: ArcGIS Maps SDK for JavaScript 4.25

DimensionAnalysis enables the creation and display of measurement annotations for lengths and distances in a 3D SceneView.

The analysis can contain multiple dimensions. These can be created interactively or programmatically, and the analysis can be added directly to either SceneView.analyses or to the DimensionLayer.source in a SceneView.map.

// create analysis with dimensions
const dimensionAnalysis = new DimensionAnalysis({
   dimensions: [
     new LengthDimension({
       startPoint: new Point({ }),
       endPoint: new Point({ })
     })
   ],
   style: new DimensionSimpleStyle({
     color: "white"
   }),
});

// add the analysis to the view
view.analyses.push(dimensionAnalysis);

Use the DimensionAnalysisView3D to retrieve the analysis results.

// retrieve measured results from the analysis view
const analysisView = await view.whenAnalysisView(dimensionAnalysis);
const results = dimensionAnalysisView.results;

To place a length dimension interactively, use the DimensionAnalysisView3D.place() method.

const abortController = new AbortController();

try {
  await analysisView.place({ signal: abortController.signal });
} catch (error) {
  if (error.name === "AbortError") {
    console.log("Placement operation was cancelled.");
  }
}

// cancel the placement operation at some later point
abortController.abort();

To edit existing dimensions interactively, set the DimensionAnalysisView3D.interactive property true and select a dimension by hovering and clicking on their offset manipulator.

// allow existing dimensions in the analysis to be selected and edited
analysisView.interactive = true;

DimensionAnalysis can be saved to a WebScene as part of a DimensionLayer.

Known Limitations

  • This analysis is only supported in a 3D SceneView.
See also

Constructors

DimensionAnalysis

Constructor
new DimensionAnalysis(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.
Show inherited properties Hide inherited properties
Name Type Summary Class

The name of the class.

Accessor

A list of dimensions.

DimensionAnalysis

A user settable identifier for the analysis.

Analysis

The origin of the analysis.

Analysis

The style defines how the dimension objects of this analysis are displayed.

DimensionAnalysis

The type of analysis.

DimensionAnalysis

An automatically generated unique identifier assigned to the instance.

Analysis

Indicates whether the analysis is ready to be computed and interacted with in the view.

DimensionAnalysis

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.

dimensions

Property
dimensions Collection<LengthDimension>autocast
Autocasts from Object[]

A list of dimensions.

id

Inherited
Property
id String
Inherited from Analysis

A user settable identifier for the analysis. A unique value is automatically generated when the analysis is created if it is not set explicitly during construction.

origin

Inherited
Property
origin AnalysisOriginWebScene |null |undefinedautocast
Inherited from Analysis

The origin of the analysis. The origin can be of type web-scene when the analysis was applied from the WebScene.initialViewProperties or a Slide.

style

Property
style DimensionSimpleStyleautocast

The style defines how the dimension objects of this analysis are displayed.

type

Property
type Stringreadonly

The type of analysis. For dimension analysis, this is always "dimension".

For DimensionAnalysis the type is always "dimension".

uid

Inherited
Property
uid Stringreadonly
Inherited from Analysis
Since: ArcGIS Maps SDK for JavaScript 4.33 Analysis since 4.33, uid added at 4.33.

An automatically generated unique identifier assigned to the instance. The unique id is generated each time the application is loaded.

valid

Property
valid Booleanreadonly
Since: ArcGIS Maps SDK for JavaScript 4.33 DimensionAnalysis since 4.25, valid added at 4.33.

Indicates whether the analysis is ready to be computed and interacted with in the view. It requires each of the dimensions to be valid, that is, to have both a start and end point If the analysis has no dimension, it is considered valid.

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
this

Creates a deep clone of this object.

Analysis

Returns true if a named group of handles exist.

Accessor

Removes a group of handles owned by the object.

Accessor

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.

clone

Inherited
Method
clone(){this}
Inherited from Analysis

Creates a deep clone of this object. Any properties that store values by reference will be assigned copies of the referenced values on the cloned instance.

Returns
Type Description
this A deep clone of the class instance that invoked this method.

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");

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