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ee.Geometry.LinearRing.edgesAreGeodesics
透過集合功能整理內容
你可以依據偏好儲存及分類內容。
如果幾何邊緣 (如有) 是沿著地球球體模型繪製的測地線，則傳回 true；如果為 false，則任何邊緣都是投影中的直線。
| 用量 | 傳回 |
|---|
LinearRing.edgesAreGeodesics() | 布林值 |
範例
程式碼編輯器 (JavaScript)
// Define a LinearRing object.
var linearRing = ee.Geometry.LinearRing(
[[-122.091, 37.420],
[-122.085, 37.422],
[-122.080, 37.430]]);
// Apply the edgesAreGeodesics method to the LinearRing object.
var linearRingEdgesAreGeodesics = linearRing.edgesAreGeodesics();
// Print the result to the console.
print('linearRing.edgesAreGeodesics(...) =', linearRingEdgesAreGeodesics);
// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(linearRing,
{'color': 'black'},
'Geometry [black]: linearRing');
Python 設定
請參閱
Python 環境頁面，瞭解 Python API 和如何使用 geemap 進行互動式開發。
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]]
)
# Apply the edgesAreGeodesics method to the LinearRing object.
linearring_edges_are_geodesics = linearring.edgesAreGeodesics()
# Print the result.
display('linearring.edgesAreGeodesics(...) =', linearring_edges_are_geodesics)
# 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
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上次更新時間：2025-07-26 (世界標準時間)。
[null,null,["上次更新時間：2025-07-26 (世界標準時間)。"],[[["\u003cp\u003eThe \u003ccode\u003eedgesAreGeodesics()\u003c/code\u003e method determines if a geometry's edges are modeled as geodesics (curves along the Earth's surface) or straight lines in the projection.\u003c/p\u003e\n"],["\u003cp\u003eIt returns \u003ccode\u003etrue\u003c/code\u003e if edges are treated as geodesics on a spherical Earth model; otherwise, it returns \u003ccode\u003efalse\u003c/code\u003e, indicating straight-line edges.\u003c/p\u003e\n"],["\u003cp\u003eThis method is specifically applicable to \u003ccode\u003eLinearRing\u003c/code\u003e geometries in Earth Engine.\u003c/p\u003e\n"],["\u003cp\u003eThe method can be used to understand how a geometry's edges are interpreted in calculations and visualizations.\u003c/p\u003e\n"]]],[],null,["# ee.Geometry.LinearRing.edgesAreGeodesics\n\nReturns true if the geometry edges, if any, are geodesics along a spherical model of the earth; if false, any edges are straight lines in the projection.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|----------------------------------|---------|\n| LinearRing.edgesAreGeodesics`()` | Boolean |\n\n| Argument | Type | Details |\n|------------------|----------|---------|\n| this: `geometry` | Geometry | |\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// Apply the edgesAreGeodesics method to the LinearRing object.\nvar linearRingEdgesAreGeodesics = linearRing.edgesAreGeodesics();\n\n// Print the result to the console.\nprint('linearRing.edgesAreGeodesics(...) =', linearRingEdgesAreGeodesics);\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');\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# Apply the edgesAreGeodesics method to the LinearRing object.\nlinearring_edges_are_geodesics = linearring.edgesAreGeodesics()\n\n# Print the result.\ndisplay('linearring.edgesAreGeodesics(...) =', linearring_edges_are_geodesics)\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\n```"]]
