AI-generated Key Takeaways
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Returns a Geometry representing the union of two geometries.
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Takes a Geometry as the right operand and optional
maxError
andproj
parameters. -
Performs the union operation, potentially reprojecting if necessary, and returns the combined geometry.
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Can be used with Rectangle and other Geometry types in Earth Engine.
Usage | Returns |
---|---|
Rectangle.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 Rectangle object. var rectangle = ee.Geometry.Rectangle(-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 Rectangle object. var rectangleUnion = rectangle.union({'right': inputGeom, 'maxError': 1}); // Print the result to the console. print('rectangle.union(...) =', rectangleUnion); // Display relevant geometries on the map. Map.setCenter(-122.085, 37.422, 15); Map.addLayer(rectangle, {'color': 'black'}, 'Geometry [black]: rectangle'); Map.addLayer(inputGeom, {'color': 'blue'}, 'Parameter [blue]: inputGeom'); Map.addLayer(rectangleUnion, {'color': 'red'}, 'Result [red]: rectangle.union');
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) # Define other inputs. input_geom = ee.Geometry.BBox(-122.085, 37.415, -122.075, 37.425) # Apply the union method to the Rectangle object. rectangle_union = rectangle.union(right=input_geom, maxError=1) # Print the result. display('rectangle.union(...) =', rectangle_union) # 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(input_geom, {'color': 'blue'}, 'Parameter [blue]: input_geom') m.add_layer( rectangle_union, {'color': 'red'}, 'Result [red]: rectangle.union' ) m