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Showing content from https://developers.arcgis.com/javascript/latest/api-reference/esri-analysis-LengthDimension.html below:

LengthDimension | API Reference | ArcGIS Maps SDK for JavaScript 4.33

ESM: import LengthDimension from "@arcgis/core/analysis/LengthDimension.js";

CDN: const LengthDimension = await $arcgis.import("@arcgis/core/analysis/LengthDimension.js");

Class: @arcgis/core/analysis/LengthDimension

Since: ArcGIS Maps SDK for JavaScript 4.25

LengthDimension enables the measurement of linear distances between the specified start and end points. Depending on the measure type, either the direct, horizontal, or vertical distance between these points is measured.

Length dimensions can be displayed by adding them to a DimensionAnalysis.

// create the dimension object
const lengthDimension = new LengthDimension({
   measureType: "vertical",
   startPoint: new Point({
      spatialReference: {
        wkid: 32610
      },
      x: 265,
      y: 24,
      z: 26
   }),
   endPoint: new Point({
      spatialReference: {
        wkid: 32610
      },
      x: 265,
      y: 24,
      z: 38
   }),
   orientation: 90,
   offset: 2
});
// create analysis and add the dimension object to it.
const dimensionAnalysis = new DimensionAnalysis({
   dimensions: [lengthDimension]
});
// add the analysis to the view
view.analyses.push(dimensionAnalysis);

Known Limitations

• Dimensioning is only supported in a 3D SceneView.
• Direct and vertical distances are always computed in a Euclidean manner.
• How horizontal distances are computed depends on the scene's spatial reference:
  • In geographic coordinate systems (GCS) and in Web Mercator, they are computed geodetically.
  • In projected coordinate systems (PCS), apart from Web Mercator, they are computed in a Euclidean manner.
• Vertical and horizontal dimensions can be used to measure distances of up to 100 kilometers. To measure longer distances use the "direct" measureType instead.

See also

• DimensionAnalysis
• DimensionSimpleStyle
• DimensionLayer

• Sample - Length dimensioning

LengthDimension Constructor new LengthDimension(properties)

Parameter

optional

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

Show inherited properties Hide inherited properties

declaredClass

Inherited

Property declaredClass Stringreadonly

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

Ending point for the dimension.

measureType Property measureType String

The type of length that should be measured between the startPoint and endPoint. The measureType allows the user to measure either the horizontal distance (delta in xy space), vertical distance (elevation difference), or direct distance between the start and end points. If either vertical or horizontal mode is used, the orientation is not applied and the offset direction is relative to the input points (on a plane derived from them).

Possible Values:"direct" |"horizontal" |"vertical"

Styling option that controls the shortest distance from the startPoint or endPoint to the dimension line in meters.

orientation Property orientation Number

The orientation determines the relative direction the dimension line is extended to. It applies only to direct dimensions and when an offset is specified.

An orientation of 0 extends the offset upwards, whereas an orientation of 90 extends the offset sideways, to the right side of the dimension when viewing from its start point. When the start and end points are vertically aligned, increasing the orientation rotates the dimension clockwise relative to compass north.

Starting point for the dimension.

valid Property valid Booleanreadonly

Since: ArcGIS Maps SDK for JavaScript 4.33 LengthDimension since 4.25, valid added at 4.33.

Indicates whether the dimension is ready to be computed and interacted with in the view. It requires both the startPoint and endPoint to be set.

Show inherited methods Hide inherited methods

addHandles

Inherited

Method addHandles(handleOrHandles, groupKey)

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

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(){this}

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}

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)

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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