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2025 年 4 月 15 日より前に Earth Engine の使用を登録したすべての非商用プロジェクトは、Earth Engine へのアクセスを維持するために
非商用目的での利用資格を確認する必要があります。
ee.Geometry.MultiLineString.edgesAreGeodesics
コレクションでコンテンツを整理
必要に応じて、コンテンツの保存と分類を行います。
ジオメトリのエッジが地球の球体モデルに沿った測地線である場合は true を返します。false の場合は、エッジは投影内の直線になります。
| 用途 | 戻り値 |
|---|
MultiLineString.edgesAreGeodesics() | ブール値 |
例
コードエディタ（JavaScript）
// Define a MultiLineString object.
var multiLineString = ee.Geometry.MultiLineString(
[[[-122.088, 37.418], [-122.086, 37.422], [-122.082, 37.418]],
[[-122.087, 37.416], [-122.083, 37.416], [-122.082, 37.419]]]);
// Apply the edgesAreGeodesics method to the MultiLineString object.
var multiLineStringEdgesAreGeodesics = multiLineString.edgesAreGeodesics();
// Print the result to the console.
print('multiLineString.edgesAreGeodesics(...) =', multiLineStringEdgesAreGeodesics);
// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(multiLineString,
{'color': 'black'},
'Geometry [black]: multiLineString');
Python の設定
Python API とインタラクティブな開発での geemap の使用については、
Python 環境のページをご覧ください。
import ee
import geemap.core as geemap
Colab（Python）
# Define a MultiLineString object.
multilinestring = ee.Geometry.MultiLineString([
[[-122.088, 37.418], [-122.086, 37.422], [-122.082, 37.418]],
[[-122.087, 37.416], [-122.083, 37.416], [-122.082, 37.419]],
])
# Apply the edgesAreGeodesics method to the MultiLineString object.
multilinestring_edges_are_geodesics = multilinestring.edgesAreGeodesics()
# Print the result.
display(
'multilinestring.edgesAreGeodesics(...) =',
multilinestring_edges_are_geodesics,
)
# Display relevant geometries on the map.
m = geemap.Map()
m.set_center(-122.085, 37.422, 15)
m.add_layer(
multilinestring, {'color': 'black'}, 'Geometry [black]: multilinestring'
)
m
特に記載のない限り、このページのコンテンツはクリエイティブ・コモンズの表示 4.0 ライセンスにより使用許諾されます。コードサンプルは Apache 2.0 ライセンスにより使用許諾されます。詳しくは、Google Developers サイトのポリシーをご覧ください。Java は Oracle および関連会社の登録商標です。
最終更新日 2025-07-26 UTC。
[null,null,["最終更新日 2025-07-26 UTC。"],[[["\u003cp\u003e\u003ccode\u003eedgesAreGeodesics()\u003c/code\u003e is a method used to determine if the edges of a MultiLineString geometry are treated as geodesics (curved along the Earth's surface) or straight lines in the projection.\u003c/p\u003e\n"],["\u003cp\u003eIt returns \u003ccode\u003etrue\u003c/code\u003e if the edges are geodesics and \u003ccode\u003efalse\u003c/code\u003e if they are straight lines.\u003c/p\u003e\n"],["\u003cp\u003eThe method is applied to a MultiLineString geometry object and takes no arguments.\u003c/p\u003e\n"],["\u003cp\u003eThis function is useful for controlling how lines are displayed and analyzed in Earth Engine, especially when dealing with large distances or areas.\u003c/p\u003e\n"]]],["The `edgesAreGeodesics()` method checks if a geometry's edges are geodesics on a spherical Earth model. It takes a geometry as input and returns a boolean value. `True` indicates geodesic edges, while `false` means straight lines in the projection. The examples show how to apply this method to a `MultiLineString` object in both JavaScript and Python, printing the boolean result and visualizing the geometry on a map.\n"],null,["# ee.Geometry.MultiLineString.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| MultiLineString.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 MultiLineString object.\nvar multiLineString = ee.Geometry.MultiLineString(\n [[[-122.088, 37.418], [-122.086, 37.422], [-122.082, 37.418]],\n [[-122.087, 37.416], [-122.083, 37.416], [-122.082, 37.419]]]);\n\n// Apply the edgesAreGeodesics method to the MultiLineString object.\nvar multiLineStringEdgesAreGeodesics = multiLineString.edgesAreGeodesics();\n\n// Print the result to the console.\nprint('multiLineString.edgesAreGeodesics(...) =', multiLineStringEdgesAreGeodesics);\n\n// Display relevant geometries on the map.\nMap.setCenter(-122.085, 37.422, 15);\nMap.addLayer(multiLineString,\n {'color': 'black'},\n 'Geometry [black]: multiLineString');\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 MultiLineString object.\nmultilinestring = ee.Geometry.MultiLineString([\n [[-122.088, 37.418], [-122.086, 37.422], [-122.082, 37.418]],\n [[-122.087, 37.416], [-122.083, 37.416], [-122.082, 37.419]],\n])\n\n# Apply the edgesAreGeodesics method to the MultiLineString object.\nmultilinestring_edges_are_geodesics = multilinestring.edgesAreGeodesics()\n\n# Print the result.\ndisplay(\n 'multilinestring.edgesAreGeodesics(...) =',\n multilinestring_edges_are_geodesics,\n)\n\n# Display relevant geometries on the map.\nm = geemap.Map()\nm.set_center(-122.085, 37.422, 15)\nm.add_layer(\n multilinestring, {'color': 'black'}, 'Geometry [black]: multilinestring'\n)\nm\n```"]]
