AI-generated Key Takeaways
-
The
centroidmethod returns a point at the center of the highest-dimension components of a geometry, ignoring lower-dimensional parts. -
The
Rectangle.centroid()method takes optionalmaxErrorandprojarguments and returns a Geometry object. -
The
maxErrorargument specifies the maximum tolerated error during reprojection. -
The
projargument specifies the output projection, defaulting to EPSG:4326 if not provided.
| Usage | Returns |
|---|---|
Rectangle.
centroid
( maxError
, proj
)
|
Geometry |
| Argument | Type | Details |
|---|---|---|
|
this:
geometry
|
Geometry | Calculates the centroid of this geometry. |
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 this projection. Otherwise it will be in EPSG:4326. |
Examples
Code Editor (JavaScript)
// Define a Rectangle object. var rectangle = ee . Geometry . Rectangle ( - 122.09 , 37.42 , - 122.08 , 37.43 ); // Apply the centroid method to the Rectangle object. var rectangleCentroid = rectangle . centroid ({ 'maxError' : 1 }); // Print the result to the console. print ( 'rectangle.centroid(...) =' , rectangleCentroid ); // Display relevant geometries on the map. Map . setCenter ( - 122.085 , 37.422 , 15 ); Map . addLayer ( rectangle , { 'color' : 'black' }, 'Geometry [black]: rectangle' ); Map . addLayer ( rectangleCentroid , { 'color' : 'red' }, 'Result [red]: rectangle.centroid' );
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 centroid method to the Rectangle object. rectangle_centroid = rectangle . centroid ( maxError = 1 ) # Print the result. display ( 'rectangle.centroid(...) =' , rectangle_centroid ) # 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 . add_layer ( rectangle_centroid , { 'color' : 'red' }, 'Result [red]: rectangle.centroid' ) m
