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.LinearRing.distance
Tetap teratur dengan koleksi
Simpan dan kategorikan konten berdasarkan preferensi Anda.
Menampilkan jarak minimum antara dua geometri.
Penggunaan | Hasil |
---|
LinearRing.distance(right, maxError, proj, spherical) | Float |
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 ditoleransi saat melakukan proyeksi ulang 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 dinyatakan dalam meter pada bola. |
spherical | Boolean, default: false | Jika benar (true), penghitungan akan dilakukan pada sfera unit. Jika salah, penghitungan akan berbentuk elips, dengan mempertimbangkan perataan bumi. Diabaikan jika proj ditentukan. Defaultnya adalah false. |
Contoh
Editor Kode (JavaScript)
// Define a LinearRing object.
var linearRing = ee.Geometry.LinearRing(
[[-122.091, 37.420],
[-122.085, 37.422],
[-122.080, 37.430]]);
// Define other inputs.
var inputGeom = ee.Geometry.Point(-122.090, 37.423);
// Apply the distance method to the LinearRing object.
var linearRingDistance = linearRing.distance({'right': inputGeom, 'maxError': 1});
// Print the result to the console.
print('linearRing.distance(...) =', linearRingDistance);
// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(linearRing,
{'color': 'black'},
'Geometry [black]: linearRing');
Map.addLayer(inputGeom,
{'color': 'blue'},
'Parameter [blue]: inputGeom');
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 LinearRing object.
linearring = ee.Geometry.LinearRing(
[[-122.091, 37.420], [-122.085, 37.422], [-122.080, 37.430]]
)
# Define other inputs.
input_geom = ee.Geometry.Point(-122.090, 37.423)
# Apply the distance method to the LinearRing object.
linearring_distance = linearring.distance(right=input_geom, maxError=1)
# Print the result.
display('linearring.distance(...) =', linearring_distance)
# Display relevant geometries on the map.
m = geemap.Map()
m.set_center(-122.085, 37.422, 15)
m.add_layer(linearring, {'color': 'black'}, 'Geometry [black]: linearring')
m.add_layer(input_geom, {'color': 'blue'}, 'Parameter [blue]: input_geom')
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 2025-07-25 UTC.
[null,null,["Terakhir diperbarui pada 2025-07-25 UTC."],[[["\u003cp\u003e\u003ccode\u003edistance()\u003c/code\u003e calculates the minimum distance between two geometries, with one being a LinearRing.\u003c/p\u003e\n"],["\u003cp\u003eThe distance is returned as a float and can be calculated using a specified projection or spherically in meters.\u003c/p\u003e\n"],["\u003cp\u003eOptional parameters allow for controlling the error margin (\u003ccode\u003emaxError\u003c/code\u003e) and the projection (\u003ccode\u003eproj\u003c/code\u003e) used in the calculation.\u003c/p\u003e\n"],["\u003cp\u003eThis function is accessible within both the JavaScript and Python Earth Engine APIs.\u003c/p\u003e\n"]]],["The `distance` method calculates the minimum distance between two geometries (`left` and `right`). It accepts optional parameters: `maxError` (tolerated error), `proj` (projection for calculation), and `spherical` (true for unit sphere calculation, false for elliptical). The function outputs a float representing the distance. The examples show how to use the function in JavaScript and Python to compute and visualize the distance between a `LinearRing` and a `Point` geometry.\n"],null,["# ee.Geometry.LinearRing.distance\n\nReturns the minimum distance between two geometries.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|-----------------------------------------------------------------------|---------|\n| LinearRing.distance`(right, `*maxError* `, `*proj* `, `*spherical*`)` | Float |\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| `spherical` | Boolean, default: false | If true, the calculation will be done on the unit sphere. If false, the calculation will be elliptical, taking earth flattening into account. Ignored if proj is specified. Default is false. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// Define a LinearRing object.\nvar linearRing = ee.Geometry.LinearRing(\n [[-122.091, 37.420],\n [-122.085, 37.422],\n [-122.080, 37.430]]);\n\n// Define other inputs.\nvar inputGeom = ee.Geometry.Point(-122.090, 37.423);\n\n// Apply the distance method to the LinearRing object.\nvar linearRingDistance = linearRing.distance({'right': inputGeom, 'maxError': 1});\n\n// Print the result to the console.\nprint('linearRing.distance(...) =', linearRingDistance);\n\n// Display relevant geometries on the map.\nMap.setCenter(-122.085, 37.422, 15);\nMap.addLayer(linearRing,\n {'color': 'black'},\n 'Geometry [black]: linearRing');\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 LinearRing object.\nlinearring = ee.Geometry.LinearRing(\n [[-122.091, 37.420], [-122.085, 37.422], [-122.080, 37.430]]\n)\n\n# Define other inputs.\ninput_geom = ee.Geometry.Point(-122.090, 37.423)\n\n# Apply the distance method to the LinearRing object.\nlinearring_distance = linearring.distance(right=input_geom, maxError=1)\n\n# Print the result.\ndisplay('linearring.distance(...) =', linearring_distance)\n\n# Display relevant geometries on the map.\nm = geemap.Map()\nm.set_center(-122.085, 37.422, 15)\nm.add_layer(linearring, {'color': 'black'}, 'Geometry [black]: linearring')\nm.add_layer(input_geom, {'color': 'blue'}, 'Parameter [blue]: input_geom')\nm\n```"]]