GeodesicArea(Geometry) Method

Gets the geodesic area of a geometry.

Syntax

C#
Visual Basic (Declaration)

double GeodesicArea( 
   Geometry geometry
)

Overloads Function GeodesicArea( _
   ByVal geometry As Geometry _
) As Double

Parameters

geometry: The input geometry. Cannot be null and its spatial reference cannot be null.

Return Value

The calculated geodesic area in square meters. If the geometry is empty, then zero is returned.

Exceptions

Exception	Description
System.ArgumentNullException	Geometry is null.
System.NotImplementedException	The method is not implemented for GeometryBag or Multipatch.
System.NotImplementedException	Spatial reference of geometryis an image coordinate system.

Example

var polygon = PolygonBuilder.CreatePolygon(new[]
{
  MapPointBuilder.CreateMapPoint(-10018754.1713946, 10018754.1713946),
  MapPointBuilder.CreateMapPoint(10018754.1713946, 10018754.1713946),
  MapPointBuilder.CreateMapPoint(10018754.1713946, -10018754.1713946),
  MapPointBuilder.CreateMapPoint(-10018754.1713946, -10018754.1713946)
}, SpatialReferences.WebMercator);
var area = GeometryEngine.Instance.GeodesicArea(polygon);

// area is close to 255032810857732.31

area = GeometryEngine.Instance.GeodesicArea(polygon, AreaUnit.SquareKilometers);
// area is close to 255032810.85953,

Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

Reference

IGeometryEngine Interface
IGeometryEngine Members
Overload List