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2025 年 4 月 15 日前註冊使用 Earth Engine 的非商業專案,都必須
驗證非商業用途資格,才能繼續存取 Earth Engine。
ee.Geometry.MultiLineString.getInfo
透過集合功能整理內容
你可以依據偏好儲存及分類內容。
從伺服器擷取這個物件的值。
如果未提供任何回呼函式,系統會同步發出要求。如果提供回呼,系統會以非同步方式發出要求。
建議使用非同步模式,因為同步模式會在等待伺服器時停止所有其他程式碼 (例如 EE 程式碼編輯器使用者介面)。如要發出非同步要求,建議使用 evaluate(),而非 getInfo()。
傳回這個物件的計算值。
用量 | 傳回 |
---|
MultiLineString.getInfo(callback) | 物件 |
引數 | 類型 | 詳細資料 |
---|
這個:computedobject | ComputedObject | ComputedObject 例項。 |
callback | 函式 (選用) | 選用回呼。如未提供,系統會同步發出呼叫。 |
範例
程式碼編輯器 (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 getInfo method to the MultiLineString object.
var multiLineStringGetInfo = multiLineString.getInfo();
// Print the result to the console.
print('multiLineString.getInfo(...) =', multiLineStringGetInfo);
// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(multiLineString,
{'color': 'black'},
'Geometry [black]: multiLineString');
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 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 getInfo method to the MultiLineString object.
multilinestring_get_info = multilinestring.getInfo()
# Print the result.
display('multilinestring.getInfo(...) =', multilinestring_get_info)
# 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
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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\u003eMultiLineString.getInfo()\u003c/code\u003e retrieves the value of a MultiLineString object from the Earth Engine server and returns it as a GeoJSON object.\u003c/p\u003e\n"],["\u003cp\u003eThe method can be used synchronously or asynchronously; the asynchronous approach is recommended to avoid blocking the UI.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eevaluate()\u003c/code\u003e is the preferred method for asynchronous requests compared to \u003ccode\u003egetInfo()\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eExamples are provided in JavaScript and Python for both synchronous and asynchronous requests on a MultiLineString.\u003c/p\u003e\n"]]],["The `getInfo()` method retrieves an object's value from the server. It can operate synchronously or asynchronously, depending on whether a callback function is provided. Asynchronous requests, using `evaluate()`, are preferred to prevent blocking the user interface. The method returns the computed value of the object. For example, when applied to a `MultiLineString` object, `getInfo()` returns the geometry's information, which can then be printed or displayed on a map.\n"],null,["# ee.Geometry.MultiLineString.getInfo\n\n\u003cbr /\u003e\n\nRetrieves the value of this object from the server.\n\n\u003cbr /\u003e\n\nIf no callback function is provided, the request is made synchronously. If a callback is provided, the request is made asynchronously.\n\nThe asynchronous mode is preferred because the synchronous mode stops all other code (for example, the EE Code Editor UI) while waiting for the server. To make an asynchronous request, evaluate() is preferred over getInfo().\n\nReturns the computed value of this object.\n\n| Usage | Returns |\n|-----------------------------------------|---------|\n| MultiLineString.getInfo`(`*callback*`)` | Object |\n\n| Argument | Type | Details |\n|------------------------|--------------------|------------------------------------------------------------------------|\n| this: `computedobject` | ComputedObject | The ComputedObject instance. |\n| `callback` | Function, optional | An optional callback. If not supplied, the call is made synchronously. |\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 getInfo method to the MultiLineString object.\nvar multiLineStringGetInfo = multiLineString.getInfo();\n\n// Print the result to the console.\nprint('multiLineString.getInfo(...) =', multiLineStringGetInfo);\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 getInfo method to the MultiLineString object.\nmultilinestring_get_info = multilinestring.getInfo()\n\n# Print the result.\ndisplay('multilinestring.getInfo(...) =', multilinestring_get_info)\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```"]]