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ee.Geometry.LinearRing.getInfo
使用集合让一切井井有条
根据您的偏好保存内容并对其进行分类。
从服务器检索此对象的值。
如果未提供回调函数，则以同步方式发出请求。如果提供了回调，则会异步发出请求。
建议使用异步模式，因为同步模式在等待服务器时会停止所有其他代码（例如 EE 代码编辑器界面）。如需发出异步请求，建议使用 evaluate() 而不是 getInfo()。
返回此对象的计算值。
| 用法 | 返回 |
|---|
LinearRing.getInfo(callback) | 对象 |
| 参数 | 类型 | 详细信息 |
|---|
此：computedobject | ComputedObject | ComputedObject 实例。 |
callback | 函数（可选） | 可选的回调。如果未提供，则以同步方式进行调用。 |
示例
代码编辑器 (JavaScript)
// Define a LinearRing object.
var linearRing = ee.Geometry.LinearRing(
[[-122.091, 37.420],
[-122.085, 37.422],
[-122.080, 37.430]]);
// Apply the getInfo method to the LinearRing object.
var linearRingGetInfo = linearRing.getInfo();
// Print the result to the console.
print('linearRing.getInfo(...) =', linearRingGetInfo);
// Display relevant geometries on the map.
Map.setCenter(-122.085, 37.422, 15);
Map.addLayer(linearRing,
{'color': 'black'},
'Geometry [black]: linearRing');
Python 设置
如需了解 Python API 和如何使用 geemap 进行交互式开发，请参阅
Python 环境页面。
import ee
import geemap.core as geemap
Colab (Python)
# Define a LinearRing object.
linearring = ee.Geometry.LinearRing(
[[-122.091, 37.420], [-122.085, 37.422], [-122.080, 37.430]]
)
# Apply the getInfo method to the LinearRing object.
linearring_get_info = linearring.getInfo()
# Print the result.
display('linearring.getInfo(...) =', linearring_get_info)
# Display relevant geometries on the map.
m = geemap.Map()
m.set_center(-122.085, 37.422, 15)
m.add_layer(linearring, {'color': 'black'}, 'Geometry [black]: linearring')
m
如未另行说明，那么本页面中的内容已根据知识共享署名 4.0 许可获得了许可，并且代码示例已根据 Apache 2.0 许可获得了许可。有关详情，请参阅 Google 开发者网站政策。Java 是 Oracle 和/或其关联公司的注册商标。
最后更新时间 (UTC)：2025-07-26。
[null,null,["最后更新时间 (UTC)：2025-07-26。"],[[["\u003cp\u003e\u003ccode\u003egetInfo()\u003c/code\u003e retrieves the value of a ComputedObject (like a LinearRing) from the Earth Engine server.\u003c/p\u003e\n"],["\u003cp\u003eIt can be used synchronously (blocking other code) or asynchronously (using a callback function).\u003c/p\u003e\n"],["\u003cp\u003eAsynchronous requests are preferred to avoid UI freezes and \u003ccode\u003eevaluate()\u003c/code\u003e is generally recommended over \u003ccode\u003egetInfo()\u003c/code\u003e for this purpose.\u003c/p\u003e\n"],["\u003cp\u003eThe method returns the computed value of the object as a JavaScript Object when called.\u003c/p\u003e\n"],["\u003cp\u003eExamples demonstrate its usage with a LinearRing in both JavaScript and Python within the Earth Engine Code Editor and Colab environments.\u003c/p\u003e\n"]]],["`getInfo()` retrieves an object's value from the server, returning the computed value. It can operate synchronously (blocking) or asynchronously (non-blocking) using an optional callback function. Asynchronous mode is preferred for UI responsiveness, and `evaluate()` is recommended over `getInfo()` for asynchronous requests. The method is demonstrated using a `LinearRing` object example in both JavaScript and Python, showcasing data retrieval and map visualization.\n"],null,["# ee.Geometry.LinearRing.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| LinearRing.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 LinearRing object.\nvar linearRing = ee.Geometry.LinearRing(\n [[-122.091, 37.420],\n [-122.085, 37.422],\n [-122.080, 37.430]]);\n\n// Apply the getInfo method to the LinearRing object.\nvar linearRingGetInfo = linearRing.getInfo();\n\n// Print the result to the console.\nprint('linearRing.getInfo(...) =', linearRingGetInfo);\n\n// Display relevant geometries on the map.\nMap.setCenter(-122.085, 37.422, 15);\nMap.addLayer(linearRing,\n {'color': 'black'},\n 'Geometry [black]: linearRing');\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 LinearRing object.\nlinearring = ee.Geometry.LinearRing(\n [[-122.091, 37.420], [-122.085, 37.422], [-122.080, 37.430]]\n)\n\n# Apply the getInfo method to the LinearRing object.\nlinearring_get_info = linearring.getInfo()\n\n# Print the result.\ndisplay('linearring.getInfo(...) =', linearring_get_info)\n\n# Display relevant geometries on the map.\nm = geemap.Map()\nm.set_center(-122.085, 37.422, 15)\nm.add_layer(linearring, {'color': 'black'}, 'Geometry [black]: linearring')\nm\n```"]]
