AI-generated Key Takeaways
-
The centroid of a geometry is the point at the center of its highest-dimension components.
-
The
centroidmethod returns a Geometry object. -
Optional arguments
maxErrorandprojcan be used to specify error tolerance and projection for the result. -
Examples show how to calculate and display the centroid of a bounding box in both JavaScript and Python.
| Usage | Returns |
|---|---|
BBox.
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 BBox object. var bBox = ee . Geometry . BBox ( - 122.09 , 37.42 , - 122.08 , 37.43 ); // Apply the centroid method to the BBox object. var bBoxCentroid = bBox . centroid ({ 'maxError' : 1 }); // Print the result to the console. print ( 'bBox.centroid(...) =' , bBoxCentroid ); // Display relevant geometries on the map. Map . setCenter ( - 122.085 , 37.422 , 15 ); Map . addLayer ( bBox , { 'color' : 'black' }, 'Geometry [black]: bBox' ); Map . addLayer ( bBoxCentroid , { 'color' : 'red' }, 'Result [red]: bBox.centroid' );
import ee import geemap.core as geemap
Colab (Python)
# Define a BBox object. bbox = ee . Geometry . BBox ( - 122.09 , 37.42 , - 122.08 , 37.43 ) # Apply the centroid method to the BBox object. bbox_centroid = bbox . centroid ( maxError = 1 ) # Print the result. display ( 'bbox.centroid(...) =' , bbox_centroid ) # Display relevant geometries on the map. m = geemap . Map () m . set_center ( - 122.085 , 37.422 , 15 ) m . add_layer ( bbox , { 'color' : 'black' }, 'Geometry [black]: bbox' ) m . add_layer ( bbox_centroid , { 'color' : 'red' }, 'Result [red]: bbox.centroid' ) m
