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ee.Geometry.LineString.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 |
|---|
LineString.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 LineString object.
var lineString = ee.Geometry.LineString([[-122.09, 37.42], [-122.08, 37.43]]);
// Apply the getInfo method to the LineString object.
var lineStringGetInfo = lineString.getInfo();
// Print the result to the console.
print('lineString.getInfo(...) =', lineStringGetInfo);
// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(lineString,
{'color': 'black'},
'Geometry [black]: lineString');
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 LineString object.
linestring = ee.Geometry.LineString([[-122.09, 37.42], [-122.08, 37.43]])
# Apply the getInfo method to the LineString object.
linestring_get_info = linestring.getInfo()
# Print the result.
display('linestring.getInfo(...) =', linestring_get_info)
# Display relevant geometries on the map.
m = geemap.Map()
m.set_center(-122.085, 37.422, 15)
m.add_layer(linestring, {'color': 'black'}, 'Geometry [black]: linestring')
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\u003egetInfo()\u003c/code\u003e retrieves the value of a ComputedObject (like a LineString) from the Earth Engine server.\u003c/p\u003e\n"],["\u003cp\u003eRequests can be made synchronously (blocking other code) or asynchronously (preferred for responsiveness).\u003c/p\u003e\n"],["\u003cp\u003eAsynchronous requests are recommended and can be achieved using \u003ccode\u003eevaluate()\u003c/code\u003e or providing a callback function to \u003ccode\u003egetInfo()\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe method returns the computed value of the object as an object, for example, the coordinates of a LineString.\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 avoid blocking the interface. The method is applied to a `ComputedObject`, such as a `LineString`, and returns the computed value. The examples illustrate defining a `LineString`, using `getInfo()`, printing the result, and displaying it on a map, with code examples in JavaScript and Python.\n"],null,["# ee.Geometry.LineString.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| LineString.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 LineString object.\nvar lineString = ee.Geometry.LineString([[-122.09, 37.42], [-122.08, 37.43]]);\n\n// Apply the getInfo method to the LineString object.\nvar lineStringGetInfo = lineString.getInfo();\n\n// Print the result to the console.\nprint('lineString.getInfo(...) =', lineStringGetInfo);\n\n// Display relevant geometries on the map.\nMap.setCenter(-122.085, 37.422, 15);\nMap.addLayer(lineString,\n {'color': 'black'},\n 'Geometry [black]: lineString');\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 LineString object.\nlinestring = ee.Geometry.LineString([[-122.09, 37.42], [-122.08, 37.43]])\n\n# Apply the getInfo method to the LineString object.\nlinestring_get_info = linestring.getInfo()\n\n# Print the result.\ndisplay('linestring.getInfo(...) =', linestring_get_info)\n\n# Display relevant geometries on the map.\nm = geemap.Map()\nm.set_center(-122.085, 37.422, 15)\nm.add_layer(linestring, {'color': 'black'}, 'Geometry [black]: linestring')\nm\n```"]]
