PolygonGeometry.Area Property
Gets the area of the PolygonGeometry.
Syntax
public System.Double Area { get; }Property Value
The area of the polygon. The unit is the square of the linear unit used for the polygon coordinates.
Remarks
The area is computed by subtracting the areas of all holes from the area of the outline.
This method operates on 2D geometries and all z-coordinate values are ignored.
This computation assumes that all holes lie inside the outline and that they do not cover each other.
The result is recalculated every time the property is accessed.
Note also that if the polygon geometry coordinates are in LongLat, then the Area will be returned in square degrees, since a Geometry knows nothing about the Crs of the Feature that it is part of. To get a more useful result, you can reproject your LongLat polygon feature to a sensible map projection before using the Area method, for example an equal-area projection if the polygon may be large, or some other kind of projection if the polygon is certain to be inside the region where the scale variation is small, for example inside the zone for a UtmProjection. See also SizeOperator.
Platforms
Windows, Linux, Android