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.MultiPolygon.withinDistance
Koleksiyonlar ile düzeninizi koruyun
İçeriği tercihlerinize göre kaydedin ve kategorilere ayırın.
Geometriler belirtilen mesafedeyse true değerini döndürür.
Kullanım | İadeler |
---|
MultiPolygon.withinDistance(right, distance, maxError, proj) | Boole |
Bağımsız Değişken | Tür | Ayrıntılar |
---|
bu: left | Geometri | İşlemin sol işleneni olarak kullanılan geometri. |
right | Geometri | İşlemin sağ işleni olarak kullanılan geometri. |
distance | Kayan | Mesafe eşiği. Bir projeksiyon belirtilmişse mesafe, bu projeksiyonlu koordinat sisteminin birimleriyle, aksi takdirde metre cinsindendir. |
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 MultiPolygon object.
var multiPolygon = ee.Geometry.MultiPolygon(
[[[[-122.092, 37.424],
[-122.086, 37.418],
[-122.079, 37.425],
[-122.085, 37.423]]],
[[[-122.081, 37.417],
[-122.086, 37.421],
[-122.089, 37.416]]]]);
// Define other inputs.
var inputGeom = ee.Geometry.Point(-122.090, 37.423);
// Apply the withinDistance method to the MultiPolygon object.
var multiPolygonWithinDistance = multiPolygon.withinDistance({'right': inputGeom, 'distance': 500, 'maxError': 1});
// Print the result to the console.
print('multiPolygon.withinDistance(...) =', multiPolygonWithinDistance);
// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(multiPolygon,
{'color': 'black'},
'Geometry [black]: multiPolygon');
Map.addLayer(inputGeom,
{'color': 'blue'},
'Parameter [blue]: inputGeom');
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 MultiPolygon object.
multipolygon = ee.Geometry.MultiPolygon([
[[
[-122.092, 37.424],
[-122.086, 37.418],
[-122.079, 37.425],
[-122.085, 37.423],
]],
[[[-122.081, 37.417], [-122.086, 37.421], [-122.089, 37.416]]],
])
# Define other inputs.
input_geom = ee.Geometry.Point(-122.090, 37.423)
# Apply the withinDistance method to the MultiPolygon object.
multipolygon_within_distance = multipolygon.withinDistance(
right=input_geom, distance=500, maxError=1
)
# Print the result.
display('multipolygon.withinDistance(...) =', multipolygon_within_distance)
# Display relevant geometries on the map.
m = geemap.Map()
m.set_center(-122.085, 37.422, 15)
m.add_layer(
multipolygon, {'color': 'black'}, 'Geometry [black]: multipolygon'
)
m.add_layer(input_geom, {'color': 'blue'}, 'Parameter [blue]: input_geom')
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\u003eDetermines if one geometry is within a specified distance of another geometry, returning true or false.\u003c/p\u003e\n"],["\u003cp\u003eTakes a MultiPolygon geometry as the primary input and another geometry as the comparison target.\u003c/p\u003e\n"],["\u003cp\u003eThe distance threshold can be defined in meters or in units of a specified projection.\u003c/p\u003e\n"],["\u003cp\u003eOptional parameters allow for specifying an error margin and projection for the calculation.\u003c/p\u003e\n"]]],["The `withinDistance` method checks if two geometries are within a specified distance. It takes a right-side geometry (`right`), a distance threshold (`distance`), an optional maximum error (`maxError`), and an optional projection (`proj`). It returns `true` if the geometries are within the specified distance and `false` otherwise. The distance units depend on the provided projection; otherwise, meters are used. Example code provided shows how to define geometries and use this method to verify proximity, displaying the result on a map.\n"],null,["# ee.Geometry.MultiPolygon.withinDistance\n\nReturns true if and only if the geometries are within a specified distance.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|-------------------------------------------------------------------------|---------|\n| MultiPolygon.withinDistance`(right, distance, `*maxError* `, `*proj*`)` | Boolean |\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| `distance` | Float | The distance threshold. If a projection is specified, the distance is in units of that projected coordinate system, otherwise it is in meters. |\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 MultiPolygon object.\nvar multiPolygon = ee.Geometry.MultiPolygon(\n [[[[-122.092, 37.424],\n [-122.086, 37.418],\n [-122.079, 37.425],\n [-122.085, 37.423]]],\n [[[-122.081, 37.417],\n [-122.086, 37.421],\n [-122.089, 37.416]]]]);\n\n// Define other inputs.\nvar inputGeom = ee.Geometry.Point(-122.090, 37.423);\n\n// Apply the withinDistance method to the MultiPolygon object.\nvar multiPolygonWithinDistance = multiPolygon.withinDistance({'right': inputGeom, 'distance': 500, 'maxError': 1});\n\n// Print the result to the console.\nprint('multiPolygon.withinDistance(...) =', multiPolygonWithinDistance);\n\n// Display relevant geometries on the map.\nMap.setCenter(-122.085, 37.422, 15);\nMap.addLayer(multiPolygon,\n {'color': 'black'},\n 'Geometry [black]: multiPolygon');\nMap.addLayer(inputGeom,\n {'color': 'blue'},\n 'Parameter [blue]: inputGeom');\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 MultiPolygon object.\nmultipolygon = ee.Geometry.MultiPolygon([\n [[\n [-122.092, 37.424],\n [-122.086, 37.418],\n [-122.079, 37.425],\n [-122.085, 37.423],\n ]],\n [[[-122.081, 37.417], [-122.086, 37.421], [-122.089, 37.416]]],\n])\n\n# Define other inputs.\ninput_geom = ee.Geometry.Point(-122.090, 37.423)\n\n# Apply the withinDistance method to the MultiPolygon object.\nmultipolygon_within_distance = multipolygon.withinDistance(\n right=input_geom, distance=500, maxError=1\n)\n\n# Print the result.\ndisplay('multipolygon.withinDistance(...) =', multipolygon_within_distance)\n\n# Display relevant geometries on the map.\nm = geemap.Map()\nm.set_center(-122.085, 37.422, 15)\nm.add_layer(\n multipolygon, {'color': 'black'}, 'Geometry [black]: multipolygon'\n)\nm.add_layer(input_geom, {'color': 'blue'}, 'Parameter [blue]: input_geom')\nm\n```"]]