AI-generated Key Takeaways
-
The
dissolvemethod returns the union of a geometry, leaving single geometries untouched and unioning multi geometries. -
The
dissolvemethod takes optionalmaxErrorandprojarguments to control reprojection and the coordinate system for the union operation. -
The method can be used with
ee.Geometry.Rectangleobjects in both JavaScript and Python.
| Usage | Returns |
|---|---|
Rectangle.
dissolve
( maxError
, proj
)
|
Geometry |
| Argument | Type | Details |
|---|---|---|
|
this:
geometry
|
Geometry | The geometry to union. |
maxError
|
ErrorMargin, default: null | The maximum amount of error tolerated when performing any necessary reprojection. |
proj
|
Projection, default: null | If specified, the union will be performed in this projection. Otherwise it will be performed in a spherical coordinate system. |
Examples
Code Editor (JavaScript)
// Define a Rectangle object. var rectangle = ee . Geometry . Rectangle ( - 122.09 , 37.42 , - 122.08 , 37.43 ); // Apply the dissolve method to the Rectangle object. var rectangleDissolve = rectangle . dissolve ({ 'maxError' : 1 }); // Print the result to the console. print ( 'rectangle.dissolve(...) =' , rectangleDissolve ); // Display relevant geometries on the map. Map . setCenter ( - 122.085 , 37.422 , 15 ); Map . addLayer ( rectangle , { 'color' : 'black' }, 'Geometry [black]: rectangle' ); Map . addLayer ( rectangleDissolve , { 'color' : 'red' }, 'Result [red]: rectangle.dissolve' );
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 dissolve method to the Rectangle object. rectangle_dissolve = rectangle . dissolve ( maxError = 1 ) # Print the result. display ( 'rectangle.dissolve(...) =' , rectangle_dissolve ) # 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_dissolve , { 'color' : 'red' }, 'Result [red]: rectangle.dissolve' ) m
