AI-generated Key Takeaways
-
The
.area()method returns the area of a geometry, with points and line strings having an area of 0 and multi geometries having the sum of their components' areas. -
The
.area()method can takemaxErrorandprojas arguments, controlling the error tolerance for reprojection and the output units, respectively. -
The method is applicable to geometry types like Rectangle.
| Usage | Returns |
|---|---|
Rectangle.area(maxError, proj) | Float |
| Argument | Type | Details |
|---|---|---|
this: geometry | Geometry | The geometry input. |
maxError | ErrorMargin, default: null | The maximum amount of error tolerated when performing any necessary reprojection. |
proj | Projection, default: null | If specified, the result will be in the units of the coordinate system of this projection. Otherwise it will be in square meters. |
Examples
Code Editor (JavaScript)
// Define a Rectangle object. var rectangle = ee.Geometry.Rectangle(-122.09, 37.42, -122.08, 37.43); // Apply the area method to the Rectangle object. var rectangleArea = rectangle.area({'maxError': 1}); // Print the result to the console. print('rectangle.area(...) =', rectangleArea); // Display relevant geometries on the map. Map.setCenter(-122.085, 37.422, 15); Map.addLayer(rectangle, {'color': 'black'}, 'Geometry [black]: rectangle');
import ee import geemap.core as geemap
Colab (Python)
# Define a Rectangle object. rectangle = ee.Geometry.Rectangle(-122.09, 37.42, -122.08, 37.43) # Apply the area method to the Rectangle object. rectangle_area = rectangle.area(maxError=1) # Print the result. display('rectangle.area(...) =', rectangle_area) # Display relevant geometries on the map. m = geemap.Map() m.set_center(-122.085, 37.422, 15) m.add_layer(rectangle, {'color': 'black'}, 'Geometry [black]: rectangle') m