ee.Geometry.Rectangle.symmetricDifference
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Zwraca różnicę symetryczną między dwiema geometriami.
Wykorzystanie | Zwroty |
---|
Rectangle.symmetricDifference(right, maxError, proj) | Geometria |
Argument | Typ | Szczegóły |
---|
to: left | Geometria | Geometria używana jako lewy operand operacji. |
right | Geometria | Geometria używana jako prawy operand operacji. |
maxError | ErrorMargin, domyślnie: null | Maksymalna dopuszczalna wartość błędu podczas wykonywania niezbędnej reprojekcji. |
proj | Prognoza, domyślnie: null | Projekcja, w której ma zostać wykonana operacja. Jeśli nie zostanie podana, operacja zostanie wykonana w sferycznym układzie współrzędnych, a odległości liniowe będą podawane w metrach na sferze. |
Przykłady
Edytor kodu (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 symmetricDifference method to the Rectangle object.
var rectangleSymmetricDifference = rectangle.symmetricDifference({'right': inputGeom, 'maxError': 1});
// Print the result to the console.
print('rectangle.symmetricDifference(...) =', rectangleSymmetricDifference);
// 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(rectangleSymmetricDifference,
{'color': 'red'},
'Result [red]: rectangle.symmetricDifference');
Konfiguracja Pythona
Informacje o interfejsie Python API i używaniu geemap
do interaktywnego programowania znajdziesz na stronie
Środowisko Python.
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 symmetricDifference method to the Rectangle object.
rectangle_symmetric_difference = rectangle.symmetricDifference(
right=input_geom, maxError=1
)
# Print the result.
display('rectangle.symmetricDifference(...) =', rectangle_symmetric_difference)
# 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_symmetric_difference,
{'color': 'red'},
'Result [red]: rectangle.symmetricDifference',
)
m
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Ostatnia aktualizacja: 2025-07-26 UTC.
[null,null,["Ostatnia aktualizacja: 2025-07-26 UTC."],[[["\u003cp\u003e\u003ccode\u003esymmetricDifference()\u003c/code\u003e returns a Geometry representing the parts of two geometries that do not intersect.\u003c/p\u003e\n"],["\u003cp\u003eIt takes a Geometry as the \u003ccode\u003eright\u003c/code\u003e operand and optional \u003ccode\u003emaxError\u003c/code\u003e and \u003ccode\u003eproj\u003c/code\u003e parameters for reprojection control.\u003c/p\u003e\n"],["\u003cp\u003eThe result includes areas of the \u003ccode\u003eleft\u003c/code\u003e (calling) Geometry and the \u003ccode\u003eright\u003c/code\u003e Geometry that are not shared by both.\u003c/p\u003e\n"],["\u003cp\u003eThis operation is useful for isolating unique regions of two overlapping or adjacent geometries.\u003c/p\u003e\n"]]],[],null,["# ee.Geometry.Rectangle.symmetricDifference\n\nReturns the symmetric difference between two geometries.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|-----------------------------------------------------------------|----------|\n| Rectangle.symmetricDifference`(right, `*maxError* `, `*proj*`)` | Geometry |\n\n| Argument | Type | Details |\n|--------------|----------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| this: `left` | Geometry | The geometry used as the left operand of the operation. |\n| `right` | Geometry | The geometry used as the right operand of the operation. |\n| `maxError` | ErrorMargin, default: null | The maximum amount of error tolerated when performing any necessary reprojection. |\n| `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. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// Define a Rectangle object.\nvar rectangle = ee.Geometry.Rectangle(-122.09, 37.42, -122.08, 37.43);\n\n// Define other inputs.\nvar inputGeom = ee.Geometry.BBox(-122.085, 37.415, -122.075, 37.425);\n\n// Apply the symmetricDifference method to the Rectangle object.\nvar rectangleSymmetricDifference = rectangle.symmetricDifference({'right': inputGeom, 'maxError': 1});\n\n// Print the result to the console.\nprint('rectangle.symmetricDifference(...) =', rectangleSymmetricDifference);\n\n// Display relevant geometries on the map.\nMap.setCenter(-122.085, 37.422, 15);\nMap.addLayer(rectangle,\n {'color': 'black'},\n 'Geometry [black]: rectangle');\nMap.addLayer(inputGeom,\n {'color': 'blue'},\n 'Parameter [blue]: inputGeom');\nMap.addLayer(rectangleSymmetricDifference,\n {'color': 'red'},\n 'Result [red]: rectangle.symmetricDifference');\n```\nPython setup\n\nSee the [Python Environment](/earth-engine/guides/python_install) page for information on the Python API and using\n`geemap` for interactive development. \n\n```python\nimport ee\nimport geemap.core as geemap\n```\n\n### Colab (Python)\n\n```python\n# Define a Rectangle object.\nrectangle = ee.Geometry.Rectangle(-122.09, 37.42, -122.08, 37.43)\n\n# Define other inputs.\ninput_geom = ee.Geometry.BBox(-122.085, 37.415, -122.075, 37.425)\n\n# Apply the symmetricDifference method to the Rectangle object.\nrectangle_symmetric_difference = rectangle.symmetricDifference(\n right=input_geom, maxError=1\n)\n\n# Print the result.\ndisplay('rectangle.symmetricDifference(...) =', rectangle_symmetric_difference)\n\n# Display relevant geometries on the map.\nm = geemap.Map()\nm.set_center(-122.085, 37.422, 15)\nm.add_layer(rectangle, {'color': 'black'}, 'Geometry [black]: rectangle')\nm.add_layer(input_geom, {'color': 'blue'}, 'Parameter [blue]: input_geom')\nm.add_layer(\n rectangle_symmetric_difference,\n {'color': 'red'},\n 'Result [red]: rectangle.symmetricDifference',\n)\nm\n```"]]