ee.FeatureCollection.distinct

從集合中移除重複項目。請注意，系統會對所選屬性的序列化形式進行強雜湊處理，藉此判斷是否重複。

用量傳回
FeatureCollection.distinct(properties)FeatureCollection
引數類型詳細資料
這個：collectionFeatureCollection要從中選取物件的輸入集合。
properties物件用於比較的屬性名稱或屬性名稱清單。您可以加入「.geo」屬性，比較物件幾何。

範例

程式碼編輯器 (JavaScript)

// FeatureCollection of power plants in Belgium.
var fc = ee.FeatureCollection('WRI/GPPD/power_plants')
             .filter('country_lg == "Belgium"');
print('FeatureCollection of power plants in Belgium', fc);

// Remove duplicate features according to property values.
print('Distinct based on a single property', fc.distinct('fuel1'));
print('Distinct based on two properties', fc.distinct(['fuel1', 'source']));
print('Distinct based on geometry', fc.distinct('.geo'));

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)

# FeatureCollection of power plants in Belgium.
fc = ee.FeatureCollection('WRI/GPPD/power_plants').filter(
    'country_lg == "Belgium"')
print('FeatureCollection of power plants in Belgium:', fc.getInfo())

# Remove duplicate features according to property values.
print('Distinct based on a single property:', fc.distinct('fuel1').getInfo())
print('Distinct based on two properties:',
      fc.distinct(['fuel1', 'source']).getInfo())
print('Distinct based on geometry', fc.distinct('.geo').getInfo())