Pengumuman: Semua project nonkomersial yang terdaftar untuk menggunakan Earth Engine sebelum
15 April 2025 harus
memverifikasi kelayakan nonkomersial untuk mempertahankan akses Earth Engine.
ee.Geometry.Rectangle.buffer
Tetap teratur dengan koleksi
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Menampilkan input yang di-buffer berdasarkan jarak tertentu. Jika jaraknya positif, geometri diperluas, dan jika jaraknya negatif, geometri diperkecil.
Penggunaan | Hasil |
---|
Rectangle.buffer(distance, maxError, proj) | Geometri |
Argumen | Jenis | Detail |
---|
ini: geometry | Geometri | Geometri yang sedang di-buffer. |
distance | Float | Jarak buffering, yang mungkin negatif. Jika tidak ada proyeksi yang ditentukan, unitnya adalah meter. Jika tidak, unit berada dalam sistem koordinat proyeksi. |
maxError | ErrorMargin, default: null | Jumlah maksimum error yang dapat ditoleransi saat memperkirakan lingkaran buffering dan melakukan proyeksi ulang yang diperlukan. Jika tidak ditentukan, nilai defaultnya adalah 1% dari jarak. |
proj | Proyeksi, default: null | Jika ditentukan, buffering akan dilakukan dalam proyeksi ini dan jarak akan ditafsirkan sebagai satuan sistem koordinat proyeksi ini. Jika tidak, jarak ditafsirkan sebagai meter dan buffering dilakukan dalam sistem koordinat bola. |
Contoh
Code Editor (JavaScript)
// Define a Rectangle object.
var rectangle = ee.Geometry.Rectangle(-122.09, 37.42, -122.08, 37.43);
// Apply the buffer method to the Rectangle object.
var rectangleBuffer = rectangle.buffer({'distance': 100});
// Print the result to the console.
print('rectangle.buffer(...) =', rectangleBuffer);
// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(rectangle,
{'color': 'black'},
'Geometry [black]: rectangle');
Map.addLayer(rectangleBuffer,
{'color': 'red'},
'Result [red]: rectangle.buffer');
Penyiapan Python
Lihat halaman
Lingkungan Python untuk mengetahui informasi tentang Python API dan penggunaan
geemap
untuk pengembangan interaktif.
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 buffer method to the Rectangle object.
rectangle_buffer = rectangle.buffer(distance=100)
# Print the result.
display('rectangle.buffer(...) =', rectangle_buffer)
# 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_buffer, {'color': 'red'}, 'Result [red]: rectangle.buffer'
)
m
Kecuali dinyatakan lain, konten di halaman ini dilisensikan berdasarkan Lisensi Creative Commons Attribution 4.0, sedangkan contoh kode dilisensikan berdasarkan Lisensi Apache 2.0. Untuk mengetahui informasi selengkapnya, lihat Kebijakan Situs Google Developers. Java adalah merek dagang terdaftar dari Oracle dan/atau afiliasinya.
Terakhir diperbarui pada 2025-07-26 UTC.
[null,null,["Terakhir diperbarui pada 2025-07-26 UTC."],[[["\u003cp\u003e\u003ccode\u003ebuffer\u003c/code\u003e returns a Geometry that is the input geometry expanded or contracted by a given distance.\u003c/p\u003e\n"],["\u003cp\u003eA positive distance expands the geometry while a negative distance contracts it.\u003c/p\u003e\n"],["\u003cp\u003eThe distance is interpreted in meters unless a projection (\u003ccode\u003eproj\u003c/code\u003e) is specified, in which case the distance is in the units of the projection's coordinate system.\u003c/p\u003e\n"],["\u003cp\u003eAn optional \u003ccode\u003emaxError\u003c/code\u003e parameter controls the accuracy of the buffer operation.\u003c/p\u003e\n"]]],["The `buffer` method expands or contracts a geometry by a specified distance. A positive distance expands, while a negative one contracts. The distance unit is meters by default or the projection's units if specified. The method accepts a `distance`, an optional `maxError` (defaulting to 1% of the distance), and an optional `proj` for the projection. It returns a new `Geometry`. The examples provided showcase this operation on a `Rectangle` geometry, increasing it's size.\n"],null,["# ee.Geometry.Rectangle.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| Rectangle.buffer`(distance, `*maxError* `, `*proj*`)` | Geometry |\n\n| Argument | Type | Details |\n|------------------|----------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| this: `geometry` | Geometry | The geometry 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// Define a Rectangle object.\nvar rectangle = ee.Geometry.Rectangle(-122.09, 37.42, -122.08, 37.43);\n\n// Apply the buffer method to the Rectangle object.\nvar rectangleBuffer = rectangle.buffer({'distance': 100});\n\n// Print the result to the console.\nprint('rectangle.buffer(...) =', rectangleBuffer);\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(rectangleBuffer,\n {'color': 'red'},\n 'Result [red]: rectangle.buffer');\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# Apply the buffer method to the Rectangle object.\nrectangle_buffer = rectangle.buffer(distance=100)\n\n# Print the result.\ndisplay('rectangle.buffer(...) =', rectangle_buffer)\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(\n rectangle_buffer, {'color': 'red'}, 'Result [red]: rectangle.buffer'\n)\nm\n```"]]