Page Summary
-
The
BBox.union()method returns the union of two geometries. -
The method takes two required geometry arguments,
leftandright, along with optionalmaxErrorandprojarguments. -
The
leftgeometry is theBBoxobject on which the method is called, andrightis the other geometry for the union operation.
| Usage | Returns |
|---|---|
BBox.
union
(right, maxError
, proj
)
|
Geometry |
| Argument | Type | Details |
|---|---|---|
|
this:
left
|
Geometry | The geometry used as the left operand of the operation. |
right
|
Geometry | The geometry used as the right operand of the operation. |
maxError
|
ErrorMargin, default: null | The maximum amount of error tolerated when performing any necessary reprojection. |
proj
|
Projection, default: null | The projection in which to perform the operation. If not specified, the operation will be performed in a spherical coordinate system, and linear distances will be in meters on the sphere. |
Examples
Code Editor (JavaScript)
// Define a BBox object. var bBox = ee . Geometry . BBox ( - 122.09 , 37.42 , - 122.08 , 37.43 ); // Define other inputs. var inputGeom = ee . Geometry . BBox ( - 122.085 , 37.415 , - 122.075 , 37.425 ); // Apply the union method to the BBox object. var bBoxUnion = bBox . union ({ 'right' : inputGeom , 'maxError' : 1 }); // Print the result to the console. print ( 'bBox.union(...) =' , bBoxUnion ); // Display relevant geometries on the map. Map . setCenter ( - 122.085 , 37.422 , 15 ); Map . addLayer ( bBox , { 'color' : 'black' }, 'Geometry [black]: bBox' ); Map . addLayer ( inputGeom , { 'color' : 'blue' }, 'Parameter [blue]: inputGeom' ); Map . addLayer ( bBoxUnion , { 'color' : 'red' }, 'Result [red]: bBox.union' );
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 ) # Define other inputs. input_geom = ee . Geometry . BBox ( - 122.085 , 37.415 , - 122.075 , 37.425 ) # Apply the union method to the BBox object. bbox_union = bbox . union ( right = input_geom , maxError = 1 ) # Print the result. display ( 'bbox.union(...) =' , bbox_union ) # 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 ( input_geom , { 'color' : 'blue' }, 'Parameter [blue]: input_geom' ) m . add_layer ( bbox_union , { 'color' : 'red' }, 'Result [red]: bbox.union' ) m
