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.Feature.buffer
Koleksiyonlar ile düzeninizi koruyun
İçeriği tercihlerinize göre kaydedin ve kategorilere ayırın.
Belirli bir mesafeyle arabelleğe alınan girişi döndürür. Mesafe pozitifse geometri genişletilir, negatifse daraltılır.
Kullanım | İadeler |
---|
Feature.buffer(distance, maxError, proj) | Özellik |
Bağımsız Değişken | Tür | Ayrıntılar |
---|
bu: feature | Öğe | Geometrisi arabelleğe alınan özellik. |
distance | Kayan | Arabelleğe almanın mesafesi (negatif olabilir). Projeksiyon belirtilmemişse birim metredir. Aksi takdirde birim, projeksiyonun koordinat sistemindedir. |
maxError | ErrorMargin, varsayılan: null | Arabelleğe alma çemberi yaklaştırılırken ve gerekli yeniden projeksiyon gerçekleştirilirken tolere edilen maksimum hata miktarı. Belirtilmezse varsayılan olarak mesafenin% 1'i kullanılır. |
proj | Projeksiyon, varsayılan: null | Belirtilirse arabelleğe alma işlemi bu projeksiyonda gerçekleştirilir ve mesafe, bu projeksiyonun koordinat sisteminin birimleri olarak yorumlanır. Aksi takdirde mesafe metre olarak yorumlanır ve arabelleğe alma işlemi küresel koordinat sisteminde gerçekleştirilir. |
Örnekler
Kod Düzenleyici (JavaScript)
// Polygon feature of Serengeti National Park.
var feature = ee.FeatureCollection('WCMC/WDPA/202307/polygons')
.filter('ORIG_NAME == "Serengeti National Park"')
.first();
// Cast the resulting object as an ee.Feature so that the call to the buffer
// method is unambiguous (first() and buffer() are shared by multiple classes).
feature = ee.Feature(feature);
// Generate buffered features out and in from the original boundary.
var bufferOut = feature.buffer(10000); // 10 km out
var bufferIn = feature.buffer(-10000); // 10 km in
// Display the features on the map.
Map.addLayer(bufferOut, {color: 'red'}, 'Buffer out');
Map.addLayer(feature, {color: 'blue'}, 'No buffer');
Map.addLayer(bufferIn, {color: 'yellow'}, 'Buffer in');
Map.setCenter(34.8407, -2.398, 8);
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)
# Polygon feature of Serengeti National Park.
feature = (
ee.FeatureCollection('WCMC/WDPA/202307/polygons')
.filter('ORIG_NAME == "Serengeti National Park"')
.first()
)
# Cast the resulting object as an ee.Feature so that the call to the buffer
# method is unambiguous (first() and buffer() are shared by multiple classes).
feature = ee.Feature(feature)
# Generate buffered features out and in from the original boundary.
buffer_out = feature.buffer(10000) # 10 km out
buffer_in = feature.buffer(-10000) # 10 km in
# Display the features on the map.
m = geemap.Map()
m.add_layer(buffer_out, {'color': 'red'}, 'Buffer out')
m.add_layer(feature, {'color': 'blue'}, 'No buffer')
m.add_layer(buffer_in, {'color': 'yellow'}, 'Buffer in')
m.set_center(34.8407, -2.398, 8)
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\u003eReturns a Feature with geometry buffered by a specified distance.\u003c/p\u003e\n"],["\u003cp\u003ePositive distance expands the geometry; negative distance contracts it.\u003c/p\u003e\n"],["\u003cp\u003eBuffering can be performed using meters or a projected coordinate system.\u003c/p\u003e\n"],["\u003cp\u003eAn optional error margin controls the approximation accuracy.\u003c/p\u003e\n"]]],["The `buffer()` method expands or contracts a feature's geometry by a specified distance. A positive distance expands the geometry, while a negative distance contracts it. The `distance` is in meters unless a `proj` projection is given, in which case the units are in the projection's coordinate system. An optional `maxError` sets tolerance. The method returns a new `Feature` that represents the geometry buffered with the parameters used.\n"],null,["# ee.Feature.buffer\n\nReturns the input buffered by a given distance. If the distance is positive, the geometry is expanded, and if the distance is negative, the geometry is contracted.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|-----------------------------------------------------|---------|\n| Feature.buffer`(distance, `*maxError* `, `*proj*`)` | Feature |\n\n| Argument | Type | Details |\n|-----------------|----------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| this: `feature` | Element | The feature the geometry of which is being buffered. |\n| `distance` | Float | The distance of the buffering, which may be negative. If no projection is specified, the unit is meters. Otherwise the unit is in the coordinate system of the projection. |\n| `maxError` | ErrorMargin, default: null | The maximum amount of error tolerated when approximating the buffering circle and performing any necessary reprojection. If unspecified, defaults to 1% of the distance. |\n| `proj` | Projection, default: null | If specified, the buffering will be performed in this projection and the distance will be interpreted as units of the coordinate system of this projection. Otherwise the distance is interpereted as meters and the buffering is performed in a spherical coordinate system. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// Polygon feature of Serengeti National Park.\nvar feature = ee.FeatureCollection('WCMC/WDPA/202307/polygons')\n .filter('ORIG_NAME == \"Serengeti National Park\"')\n .first();\n\n// Cast the resulting object as an ee.Feature so that the call to the buffer\n// method is unambiguous (first() and buffer() are shared by multiple classes).\nfeature = ee.Feature(feature);\n\n// Generate buffered features out and in from the original boundary.\nvar bufferOut = feature.buffer(10000); // 10 km out\nvar bufferIn = feature.buffer(-10000); // 10 km in\n\n// Display the features on the map.\nMap.addLayer(bufferOut, {color: 'red'}, 'Buffer out');\nMap.addLayer(feature, {color: 'blue'}, 'No buffer');\nMap.addLayer(bufferIn, {color: 'yellow'}, 'Buffer in');\nMap.setCenter(34.8407, -2.398, 8);\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# Polygon feature of Serengeti National Park.\nfeature = (\n ee.FeatureCollection('WCMC/WDPA/202307/polygons')\n .filter('ORIG_NAME == \"Serengeti National Park\"')\n .first()\n)\n\n# Cast the resulting object as an ee.Feature so that the call to the buffer\n# method is unambiguous (first() and buffer() are shared by multiple classes).\nfeature = ee.Feature(feature)\n\n# Generate buffered features out and in from the original boundary.\nbuffer_out = feature.buffer(10000) # 10 km out\nbuffer_in = feature.buffer(-10000) # 10 km in\n\n# Display the features on the map.\nm = geemap.Map()\nm.add_layer(buffer_out, {'color': 'red'}, 'Buffer out')\nm.add_layer(feature, {'color': 'blue'}, 'No buffer')\nm.add_layer(buffer_in, {'color': 'yellow'}, 'Buffer in')\nm.set_center(34.8407, -2.398, 8)\nm\n```"]]