Duyuru:
15 Nisan 2025'ten önce Earth Engine'i kullanmak için kaydedilen tüm ticari olmayan projelerin Earth Engine erişimini sürdürmek için
ticari olmayan uygunluğu doğrulaması gerekir.
ee.Geometry.MultiLineString.symmetricDifference
Koleksiyonlar ile düzeninizi koruyun
İçeriği tercihlerinize göre kaydedin ve kategorilere ayırın.
İki geometri arasındaki simetrik farkı döndürür.
Kullanım | İadeler |
---|
MultiLineString.symmetricDifference(right, maxError, proj) | Geometri |
Bağımsız Değişken | Tür | Ayrıntılar |
---|
bu: left | Geometri | İşlemin sol işleneni olarak kullanılan geometri. |
right | Geometri | İşlemin sağ işleni olarak kullanılan geometri. |
maxError | ErrorMargin, varsayılan: null | Gerekli yeniden projeksiyon işlemleri gerçekleştirilirken tolere edilen maksimum hata miktarı. |
proj | Projeksiyon, varsayılan: null | İşlemin gerçekleştirileceği projeksiyon. Belirtilmemişse işlem küresel bir koordinat sisteminde gerçekleştirilir ve doğrusal mesafeler kürede metre cinsinden olur. |
Örnekler
Kod Düzenleyici (JavaScript)
// Define a MultiLineString object.
var multiLineString = ee.Geometry.MultiLineString(
[[[-122.088, 37.418], [-122.086, 37.422], [-122.082, 37.418]],
[[-122.087, 37.416], [-122.083, 37.416], [-122.082, 37.419]]]);
// Define other inputs.
var inputGeom = ee.Geometry.BBox(-122.085, 37.415, -122.075, 37.425);
// Apply the symmetricDifference method to the MultiLineString object.
var multiLineStringSymmetricDifference = multiLineString.symmetricDifference({'right': inputGeom, 'maxError': 1});
// Print the result to the console.
print('multiLineString.symmetricDifference(...) =', multiLineStringSymmetricDifference);
// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(multiLineString,
{'color': 'black'},
'Geometry [black]: multiLineString');
Map.addLayer(inputGeom,
{'color': 'blue'},
'Parameter [blue]: inputGeom');
Map.addLayer(multiLineStringSymmetricDifference,
{'color': 'red'},
'Result [red]: multiLineString.symmetricDifference');
Python kurulumu
Python API'si ve etkileşimli geliştirme için geemap
kullanımı hakkında bilgi edinmek üzere
Python Ortamı sayfasına bakın.
import ee
import geemap.core as geemap
Colab (Python)
# Define a MultiLineString object.
multilinestring = ee.Geometry.MultiLineString([
[[-122.088, 37.418], [-122.086, 37.422], [-122.082, 37.418]],
[[-122.087, 37.416], [-122.083, 37.416], [-122.082, 37.419]],
])
# Define other inputs.
input_geom = ee.Geometry.BBox(-122.085, 37.415, -122.075, 37.425)
# Apply the symmetricDifference method to the MultiLineString object.
multilinestring_symmetric_difference = multilinestring.symmetricDifference(
right=input_geom, maxError=1
)
# Print the result.
display(
'multilinestring.symmetricDifference(...) =',
multilinestring_symmetric_difference,
)
# Display relevant geometries on the map.
m = geemap.Map()
m.set_center(-122.085, 37.422, 15)
m.add_layer(
multilinestring, {'color': 'black'}, 'Geometry [black]: multilinestring'
)
m.add_layer(input_geom, {'color': 'blue'}, 'Parameter [blue]: input_geom')
m.add_layer(
multilinestring_symmetric_difference,
{'color': 'red'},
'Result [red]: multilinestring.symmetricDifference',
)
m
Aksi belirtilmediği sürece bu sayfanın içeriği Creative Commons Atıf 4.0 Lisansı altında ve kod örnekleri Apache 2.0 Lisansı altında lisanslanmıştır. Ayrıntılı bilgi için Google Developers Site Politikaları'na göz atın. Java, Oracle ve/veya satış ortaklarının tescilli ticari markasıdır.
Son güncelleme tarihi: 2025-07-26 UTC.
[null,null,["Son güncelleme tarihi: 2025-07-26 UTC."],[[["\u003cp\u003eThe \u003ccode\u003esymmetricDifference()\u003c/code\u003e method returns a Geometry representing the parts of two geometries that do not intersect.\u003c/p\u003e\n"],["\u003cp\u003eIt takes a Geometry as the right operand and optional \u003ccode\u003emaxError\u003c/code\u003e and \u003ccode\u003eproj\u003c/code\u003e parameters for reprojection.\u003c/p\u003e\n"],["\u003cp\u003eThis method effectively identifies the areas unique to each of the input geometries.\u003c/p\u003e\n"],["\u003cp\u003eIt can be applied to a variety of geometry types, including MultiLineString as demonstrated in the example.\u003c/p\u003e\n"]]],["The `symmetricDifference` method calculates the symmetric difference between two geometries, a `left` and a `right`. This operation returns a new `Geometry` object. It accepts an optional `maxError` parameter for reprojection tolerance and a `proj` parameter to specify the projection. The method is demonstrated using a `MultiLineString` object and a bounding box geometry. The examples display the original geometries alongside the resulting symmetric difference on a map.\n"],null,["# ee.Geometry.MultiLineString.symmetricDifference\n\nReturns the symmetric difference between two geometries.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|-----------------------------------------------------------------------|----------|\n| MultiLineString.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 MultiLineString object.\nvar multiLineString = ee.Geometry.MultiLineString(\n [[[-122.088, 37.418], [-122.086, 37.422], [-122.082, 37.418]],\n [[-122.087, 37.416], [-122.083, 37.416], [-122.082, 37.419]]]);\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 MultiLineString object.\nvar multiLineStringSymmetricDifference = multiLineString.symmetricDifference({'right': inputGeom, 'maxError': 1});\n\n// Print the result to the console.\nprint('multiLineString.symmetricDifference(...) =', multiLineStringSymmetricDifference);\n\n// Display relevant geometries on the map.\nMap.setCenter(-122.085, 37.422, 15);\nMap.addLayer(multiLineString,\n {'color': 'black'},\n 'Geometry [black]: multiLineString');\nMap.addLayer(inputGeom,\n {'color': 'blue'},\n 'Parameter [blue]: inputGeom');\nMap.addLayer(multiLineStringSymmetricDifference,\n {'color': 'red'},\n 'Result [red]: multiLineString.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 MultiLineString object.\nmultilinestring = ee.Geometry.MultiLineString([\n [[-122.088, 37.418], [-122.086, 37.422], [-122.082, 37.418]],\n [[-122.087, 37.416], [-122.083, 37.416], [-122.082, 37.419]],\n])\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 MultiLineString object.\nmultilinestring_symmetric_difference = multilinestring.symmetricDifference(\n right=input_geom, maxError=1\n)\n\n# Print the result.\ndisplay(\n 'multilinestring.symmetricDifference(...) =',\n multilinestring_symmetric_difference,\n)\n\n# Display relevant geometries on the map.\nm = geemap.Map()\nm.set_center(-122.085, 37.422, 15)\nm.add_layer(\n multilinestring, {'color': 'black'}, 'Geometry [black]: multilinestring'\n)\nm.add_layer(input_geom, {'color': 'blue'}, 'Parameter [blue]: input_geom')\nm.add_layer(\n multilinestring_symmetric_difference,\n {'color': 'red'},\n 'Result [red]: multilinestring.symmetricDifference',\n)\nm\n```"]]