公告:凡是在
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.Rectangle.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 |
---|
Rectangle.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 Rectangle object.
var rectangle = ee.Geometry.Rectangle(-122.09, 37.42, -122.08, 37.43);
// Apply the getInfo method to the Rectangle object.
var rectangleGetInfo = rectangle.getInfo();
// Print the result to the console.
print('rectangle.getInfo(...) =', rectangleGetInfo);
// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(rectangle,
{'color': 'black'},
'Geometry [black]: rectangle');
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 Rectangle object.
rectangle = ee.Geometry.Rectangle(-122.09, 37.42, -122.08, 37.43)
# Apply the getInfo method to the Rectangle object.
rectangle_get_info = rectangle.getInfo()
# Print the result.
display('rectangle.getInfo(...) =', rectangle_get_info)
# Display relevant geometries on the map.
m = geemap.Map()
m.set_center(-122.085, 37.422, 15)
m.add_layer(rectangle, {'color': 'black'}, 'Geometry [black]: rectangle')
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 Rectangle) from the Earth Engine server.\u003c/p\u003e\n"],["\u003cp\u003eRequests can be made synchronously (blocking) or asynchronously (non-blocking) using a callback function.\u003c/p\u003e\n"],["\u003cp\u003eAsynchronous requests are generally preferred to avoid UI freezes during server communication.\u003c/p\u003e\n"],["\u003cp\u003eThe method returns the computed value of the object as an object.\u003c/p\u003e\n"]]],[],null,["# ee.Geometry.Rectangle.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| Rectangle.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 Rectangle object.\nvar rectangle = ee.Geometry.Rectangle(-122.09, 37.42, -122.08, 37.43);\n\n// Apply the getInfo method to the Rectangle object.\nvar rectangleGetInfo = rectangle.getInfo();\n\n// Print the result to the console.\nprint('rectangle.getInfo(...) =', rectangleGetInfo);\n\n// Display relevant geometries on the map.\nMap.setCenter(-122.085, 37.422, 15);\nMap.addLayer(rectangle,\n {'color': 'black'},\n 'Geometry [black]: rectangle');\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 Rectangle object.\nrectangle = ee.Geometry.Rectangle(-122.09, 37.42, -122.08, 37.43)\n\n# Apply the getInfo method to the Rectangle object.\nrectangle_get_info = rectangle.getInfo()\n\n# Print the result.\ndisplay('rectangle.getInfo(...) =', rectangle_get_info)\n\n# Display relevant geometries on the map.\nm = geemap.Map()\nm.set_center(-122.085, 37.422, 15)\nm.add_layer(rectangle, {'color': 'black'}, 'Geometry [black]: rectangle')\nm\n```"]]