GeodesicArea(Geometry,AreaUnit) Method

C#
Visual Basic (Declaration)

public double GeodesicArea( 
   Geometry geometry,
   AreaUnit areaUnit
)

Public Overloads Function GeodesicArea( _
   ByVal geometry As Geometry, _
   ByVal areaUnit As AreaUnit _
) As Double

Parameters

geometry: The input geometry. Cannot be null and its spatial reference cannot be null.
areaUnit: The unit of the output area. If null, then the area is square meters.

Return Value

The calculated geodesic area in . If is null, the geodesic area is in square meters.

If the geometry is empty, then zero is returned.

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.

C#

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,

Target Platforms: Windows 11, Windows 10, Windows 8.1

Reference

GeometryEngine Class
GeometryEngine Members
Overload List