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 method takes optional
maxErrorandprojarguments to control the accuracy of reprojection and the units of the result. -
The result of
area()is a Float. -
Examples are provided for using the
area()method in both JavaScript and Python environments.
| Usage | Returns |
|---|---|
LinearRing.
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 LinearRing object. var linearRing = ee . Geometry . LinearRing ( [[ - 122.091 , 37.420 ], [ - 122.085 , 37.422 ], [ - 122.080 , 37.430 ]]); // Apply the area method to the LinearRing object. var linearRingArea = linearRing . area ({ 'maxError' : 1 }); // Print the result to the console. print ( 'linearRing.area(...) =' , linearRingArea ); // Display relevant geometries on the map. Map . setCenter ( - 122.085 , 37.422 , 15 ); Map . addLayer ( linearRing , { 'color' : 'black' }, 'Geometry [black]: linearRing' );
import ee import geemap.core as geemap
Colab (Python)
# Define a LinearRing object. linearring = ee . Geometry . LinearRing ( [[ - 122.091 , 37.420 ], [ - 122.085 , 37.422 ], [ - 122.080 , 37.430 ]] ) # Apply the area method to the LinearRing object. linearring_area = linearring . area ( maxError = 1 ) # Print the result. display ( 'linearring.area(...) =' , linearring_area ) # Display relevant geometries on the map. m = geemap . Map () m . set_center ( - 122.085 , 37.422 , 15 ) m . add_layer ( linearring , { 'color' : 'black' }, 'Geometry [black]: linearring' ) m
