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.BBox.union
Tetap teratur dengan koleksi
Simpan dan kategorikan konten berdasarkan preferensi Anda.
Menampilkan gabungan kedua geometri.
Penggunaan | Hasil |
---|
BBox.union(right, maxError, proj) | Geometri |
Argumen | Jenis | Detail |
---|
ini: left | Geometri | Geometri yang digunakan sebagai operand kiri operasi. |
right | Geometri | Geometri yang digunakan sebagai operand kanan operasi. |
maxError | ErrorMargin, default: null | Jumlah maksimum error yang dapat ditoleransi saat melakukan reproyeksi yang diperlukan. |
proj | Proyeksi, default: null | Proyeksi tempat operasi akan dilakukan. Jika tidak ditentukan, operasi akan dilakukan dalam sistem koordinat bola, dan jarak linear akan dalam meter di bola. |
Contoh
Code Editor (JavaScript)
// Define a BBox object.
var bBox = ee.Geometry.BBox(-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 union method to the BBox object.
var bBoxUnion = bBox.union({'right': inputGeom, 'maxError': 1});
// Print the result to the console.
print('bBox.union(...) =', bBoxUnion);
// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(bBox,
{'color': 'black'},
'Geometry [black]: bBox');
Map.addLayer(inputGeom,
{'color': 'blue'},
'Parameter [blue]: inputGeom');
Map.addLayer(bBoxUnion,
{'color': 'red'},
'Result [red]: bBox.union');
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 BBox object.
bbox = ee.Geometry.BBox(-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 union method to the BBox object.
bbox_union = bbox.union(right=input_geom, maxError=1)
# Print the result.
display('bbox.union(...) =', bbox_union)
# Display relevant geometries on the map.
m = geemap.Map()
m.set_center(-122.085, 37.422, 15)
m.add_layer(bbox, {'color': 'black'}, 'Geometry [black]: bbox')
m.add_layer(input_geom, {'color': 'blue'}, 'Parameter [blue]: input_geom')
m.add_layer(bbox_union, {'color': 'red'}, 'Result [red]: bbox.union')
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\u003eReturns a Geometry representing the union of two geometries.\u003c/p\u003e\n"],["\u003cp\u003eAccepts a right operand Geometry, an optional maximum error margin, and an optional projection for the operation.\u003c/p\u003e\n"],["\u003cp\u003eCan be performed in a spherical coordinate system with distances in meters on the sphere if no projection is specified.\u003c/p\u003e\n"],["\u003cp\u003eIllustrated with JavaScript and Python examples demonstrating its usage with BBox geometries.\u003c/p\u003e\n"]]],["The `union` method combines two geometries, `left` and `right`, returning their union as a new `Geometry` object. It accepts optional `maxError` and `proj` arguments to control reprojection and error tolerance. `maxError` defines the maximum allowed error during reprojection. `proj` specifies the projection; if unspecified, it defaults to spherical coordinates with linear distances in meters. Example codes demonstrate combining bounding boxes using this method in JavaScript and Python.\n"],null,["# ee.Geometry.BBox.union\n\nReturns the union of the two geometries.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|----------------------------------------------|----------|\n| BBox.union`(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 BBox object.\nvar bBox = ee.Geometry.BBox(-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 union method to the BBox object.\nvar bBoxUnion = bBox.union({'right': inputGeom, 'maxError': 1});\n\n// Print the result to the console.\nprint('bBox.union(...) =', bBoxUnion);\n\n// Display relevant geometries on the map.\nMap.setCenter(-122.085, 37.422, 15);\nMap.addLayer(bBox,\n {'color': 'black'},\n 'Geometry [black]: bBox');\nMap.addLayer(inputGeom,\n {'color': 'blue'},\n 'Parameter [blue]: inputGeom');\nMap.addLayer(bBoxUnion,\n {'color': 'red'},\n 'Result [red]: bBox.union');\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 BBox object.\nbbox = ee.Geometry.BBox(-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 union method to the BBox object.\nbbox_union = bbox.union(right=input_geom, maxError=1)\n\n# Print the result.\ndisplay('bbox.union(...) =', bbox_union)\n\n# Display relevant geometries on the map.\nm = geemap.Map()\nm.set_center(-122.085, 37.422, 15)\nm.add_layer(bbox, {'color': 'black'}, 'Geometry [black]: bbox')\nm.add_layer(input_geom, {'color': 'blue'}, 'Parameter [blue]: input_geom')\nm.add_layer(bbox_union, {'color': 'red'}, 'Result [red]: bbox.union')\nm\n```"]]