ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.Geometry Namespace / IGeometryEngine Interface / GeodeticLength Method
The input geometry. Cannot be null and its spatial reference cannot be null.
The units of the output. If null, then the output is in meters
The GeodeticCurveType of the segments.
Version

GeodeticLength Method (IGeometryEngine)
Gets the geodetic length of the input geometry.
Syntax

Parameters

geometry
The input geometry. Cannot be null and its spatial reference cannot be null.
lengthUnit
The units of the output. If null, then the output is in meters
curveType
The GeodeticCurveType of the segments.

Return Value

The calculated geodetic length in lengthUnit. If lengthUnit is null, then the length is in meters.

If the geometry is empty, then zero is returned.

Exceptions
ExceptionDescription
Geometry is null or geometry's spatial reference is null.
The method is not implemented for GeometryBag or Multipatch.
Spatial reference of geometryis an image coordinate system.
Remarks
Geodetic length is calculated by using only the vertices of the geometry and defining the segments between the points as determined by curveType independent of the actual shape of the geometry.
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3.4 or higher.
See Also