area2D abstract method

double area2D()

Returns the area of this geometry calculated in a cartesian 2D plane.

The area is zero or a positive double value. For points and line string the result is 0.0, and for polygon geometries the area of an polygon (more specifically the area represented by an exterior ring minus areas of any interior rings or holes). Multi geometries and geometry collections returns the sum of areas of contained geometries.

To calculate (2D) area on the surface of the earth, see spherical extensions for Iterable<Geographic> and PositionSeries implemented by the package:geobase/geodesy.dart library.

Implementation

double area2D();