AI-generated Key Takeaways
-
The centroid method returns a point at the center of the highest-dimension components of a geometry, ignoring lower-dimensional ones.
-
The
centroidmethod can take optionalmaxErrorandprojarguments to control reprojection and output projection. -
The centroid method can be used in both JavaScript and Python as demonstrated by the provided examples.
| Usage | Returns |
|---|---|
Point.
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 Point object. var point = ee . Geometry . Point ( - 122.082 , 37.42 ); // Apply the centroid method to the Point object. var pointCentroid = point . centroid ({ 'maxError' : 1 }); // Print the result to the console. print ( 'point.centroid(...) =' , pointCentroid ); // Display relevant geometries on the map. Map . setCenter ( - 122.085 , 37.422 , 15 ); Map . addLayer ( point , { 'color' : 'black' }, 'Geometry [black]: point' ); Map . addLayer ( pointCentroid , { 'color' : 'red' }, 'Result [red]: point.centroid' );
import ee import geemap.core as geemap
Colab (Python)
# Define a Point object. point = ee . Geometry . Point ( - 122.082 , 37.42 ) # Apply the centroid method to the Point object. point_centroid = point . centroid ( maxError = 1 ) # Print the result. display ( 'point.centroid(...) =' , point_centroid ) # Display relevant geometries on the map. m = geemap . Map () m . set_center ( - 122.085 , 37.422 , 15 ) m . add_layer ( point , { 'color' : 'black' }, 'Geometry [black]: point' ) m . add_layer ( point_centroid , { 'color' : 'red' }, 'Result [red]: point.centroid' ) m
