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ee.FeatureCollection.toDictionary
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。
从要素中提取属性作为字典。
| 用法 | 返回 |
|---|
FeatureCollection.toDictionary(properties) | 字典 |
| 参数 | 类型 | 详细信息 |
|---|
此：element | 元素 | 要从中提取属性的要素。 |
properties | 列表，默认值：null | 要提取的属性列表。默认为所有非系统属性。 |
示例
代码编辑器 (JavaScript)
// FeatureCollection of power plants.
var fc = ee.FeatureCollection('WRI/GPPD/power_plants');
print('All non-system FeatureCollection properties as an ee.Dictionary',
fc.toDictionary());
print('Selected properties as an ee.Dictionary',
fc.toDictionary(['description', 'provider']));
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)
# FeatureCollection of power plants.
fc = ee.FeatureCollection('WRI/GPPD/power_plants')
print('All non-system FeatureCollection properties as an ee.Dictionary:',
fc.toDictionary().getInfo())
print('Selected properties as an ee.Dictionary:',
fc.toDictionary(['description', 'provider']).getInfo())
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\u003eThe \u003ccode\u003etoDictionary()\u003c/code\u003e function extracts properties from an Earth Engine Feature or FeatureCollection and returns them as a dictionary.\u003c/p\u003e\n"],["\u003cp\u003eBy default, \u003ccode\u003etoDictionary()\u003c/code\u003e extracts all non-system properties; you can also specify a list of properties to extract.\u003c/p\u003e\n"],["\u003cp\u003eThis function is available for both the JavaScript and Python Earth Engine APIs.\u003c/p\u003e\n"],["\u003cp\u003eThe extracted dictionary can be printed or further processed using Earth Engine methods or your preferred scripting language.\u003c/p\u003e\n"]]],[],null,["# ee.FeatureCollection.toDictionary\n\nExtract properties from a feature as a dictionary.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|--------------------------------------------------|------------|\n| FeatureCollection.toDictionary`(`*properties*`)` | Dictionary |\n\n| Argument | Type | Details |\n|-----------------|---------------------|---------------------------------------------------------------------------|\n| this: `element` | Element | The feature to extract the property from. |\n| `properties` | List, default: null | The list of properties to extract. Defaults to all non-system properties. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// FeatureCollection of power plants.\nvar fc = ee.FeatureCollection('WRI/GPPD/power_plants');\n\nprint('All non-system FeatureCollection properties as an ee.Dictionary',\n fc.toDictionary());\nprint('Selected properties as an ee.Dictionary',\n fc.toDictionary(['description', 'provider']));\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# FeatureCollection of power plants.\nfc = ee.FeatureCollection('WRI/GPPD/power_plants')\n\nprint('All non-system FeatureCollection properties as an ee.Dictionary:',\n fc.toDictionary().getInfo())\nprint('Selected properties as an ee.Dictionary:',\n fc.toDictionary(['description', 'provider']).getInfo())\n```"]]
