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ee.Geometry.MultiPolygon.geodesic
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如果為 false，投影畫面邊緣會是直線。如果是 true，邊緣會彎曲，以遵循地球表面的最短路徑。
| 用量 | 傳回 |
|---|
MultiPolygon.geodesic() | 布林值 |
範例
程式碼編輯器 (JavaScript)
// Define a MultiPolygon object.
var multiPolygon = ee.Geometry.MultiPolygon(
[[[[-122.092, 37.424],
[-122.086, 37.418],
[-122.079, 37.425],
[-122.085, 37.423]]],
[[[-122.081, 37.417],
[-122.086, 37.421],
[-122.089, 37.416]]]]);
// Apply the geodesic method to the MultiPolygon object.
var multiPolygonGeodesic = multiPolygon.geodesic();
// Print the result to the console.
print('multiPolygon.geodesic(...) =', multiPolygonGeodesic);
// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(multiPolygon,
{'color': 'black'},
'Geometry [black]: multiPolygon');
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 MultiPolygon object.
multipolygon = ee.Geometry.MultiPolygon([
[[
[-122.092, 37.424],
[-122.086, 37.418],
[-122.079, 37.425],
[-122.085, 37.423],
]],
[[[-122.081, 37.417], [-122.086, 37.421], [-122.089, 37.416]]],
])
# Apply the geodesic method to the MultiPolygon object.
multipolygon_geodesic = multipolygon.geodesic()
# Print the result.
display('multipolygon.geodesic(...) =', multipolygon_geodesic)
# Display relevant geometries on the map.
m = geemap.Map()
m.set_center(-122.085, 37.422, 15)
m.add_layer(
multipolygon, {'color': 'black'}, 'Geometry [black]: multipolygon'
)
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\u003e\u003ccode\u003eMultiPolygon.geodesic()\u003c/code\u003e is a method in Earth Engine that determines whether the edges of a MultiPolygon are rendered as straight lines or curved to follow the Earth's curvature.\u003c/p\u003e\n"],["\u003cp\u003eBy default, edges are straight; setting \u003ccode\u003egeodesic()\u003c/code\u003e to \u003ccode\u003etrue\u003c/code\u003e renders them as curves representing the shortest path on the Earth's surface.\u003c/p\u003e\n"],["\u003cp\u003eThis method returns a Boolean value indicating the current geodesic setting of the MultiPolygon.\u003c/p\u003e\n"],["\u003cp\u003eThe method is demonstrated with code examples in JavaScript and Python, showing how to apply it and visualize the results on a map.\u003c/p\u003e\n"]]],["The `MultiPolygon.geodesic()` method determines edge curvature in a projection. It returns a boolean: `false` indicates straight edges, and `true` signifies curved edges following the Earth's surface. The examples provided in JavaScript and Python define a `MultiPolygon` object, apply the `geodesic()` method, display the boolean result, and visualize the geometry on a map. `Geometry` is an argument that is being used in this context.\n"],null,["# ee.Geometry.MultiPolygon.geodesic\n\nIf false, edges are straight in the projection. If true, edges are curved to follow the shortest path on the surface of the Earth.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|---------------------------|---------|\n| MultiPolygon.geodesic`()` | 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 MultiPolygon object.\nvar multiPolygon = ee.Geometry.MultiPolygon(\n [[[[-122.092, 37.424],\n [-122.086, 37.418],\n [-122.079, 37.425],\n [-122.085, 37.423]]],\n [[[-122.081, 37.417],\n [-122.086, 37.421],\n [-122.089, 37.416]]]]);\n\n// Apply the geodesic method to the MultiPolygon object.\nvar multiPolygonGeodesic = multiPolygon.geodesic();\n\n// Print the result to the console.\nprint('multiPolygon.geodesic(...) =', multiPolygonGeodesic);\n\n// Display relevant geometries on the map.\nMap.setCenter(-122.085, 37.422, 15);\nMap.addLayer(multiPolygon,\n {'color': 'black'},\n 'Geometry [black]: multiPolygon');\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 MultiPolygon object.\nmultipolygon = ee.Geometry.MultiPolygon([\n [[\n [-122.092, 37.424],\n [-122.086, 37.418],\n [-122.079, 37.425],\n [-122.085, 37.423],\n ]],\n [[[-122.081, 37.417], [-122.086, 37.421], [-122.089, 37.416]]],\n])\n\n# Apply the geodesic method to the MultiPolygon object.\nmultipolygon_geodesic = multipolygon.geodesic()\n\n# Print the result.\ndisplay('multipolygon.geodesic(...) =', multipolygon_geodesic)\n\n# Display relevant geometries on the map.\nm = geemap.Map()\nm.set_center(-122.085, 37.422, 15)\nm.add_layer(\n multipolygon, {'color': 'black'}, 'Geometry [black]: multipolygon'\n)\nm\n```"]]
