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。如未在 2025 年 9 月 26 日前完成驗證,存取權可能會暫停。
ee.FeatureCollection.get
透過集合功能整理內容
你可以依據偏好儲存及分類內容。
從特徵擷取屬性。
| 用量 | 傳回 |
|---|
FeatureCollection.get(property) | |
| 引數 | 類型 | 詳細資料 |
|---|
這個:object | 元素 | 要從中擷取屬性的特徵。 |
property | 字串 | 要擷取的屬性。 |
範例
程式碼編輯器 (JavaScript)
// A global power plant FeatureCollection.
var fc = ee.FeatureCollection('WRI/GPPD/power_plants');
// View a list of FeatureCollection property names.
print(fc.propertyNames());
// Get the value of a listed property.
print('Global power plant data provider as ee.ComputedObject',
fc.get('provider'));
// The returned value is an ee.ComputedObject which has no methods available for
// further processing; cast to the relevant Earth Engine object class for use.
print('Global power plant data provider as ee.String',
ee.String(fc.get('provider')));
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)
# A global power plant FeatureCollection.
fc = ee.FeatureCollection('WRI/GPPD/power_plants')
# View a list of FeatureCollection property names.
print(fc.propertyNames().getInfo())
# Get the value of a listed property.
print('Global power plant data provider as ee.ComputedObject:',
fc.get('provider').getInfo())
# The returned value is an ee.ComputedObject which has no methods available for
# further processing; cast to the relevant Earth Engine object class for use.
print('Global power plant data provider as ee.String:',
ee.String(fc.get('provider')).getInfo())
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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)。"],[],["The core functionality involves extracting a specific property from a FeatureCollection using the `get(property)` method. This method requires the feature itself and the property name as input. The returned value is initially an `ee.ComputedObject`, which must be cast to the appropriate Earth Engine object type (e.g., `ee.String`) for further use. Examples demonstrate accessing property names via `propertyNames()` and extracting the 'provider' property from a power plant FeatureCollection in both JavaScript and Python.\n"]]