ee.FeatureCollection.distinct

从集合中移除重复项。请注意，系统会根据所选属性的序列化形式的强哈希值来确定重复项。

用法	返回
FeatureCollection.distinct(properties)	FeatureCollection

参数	类型	详细信息
此：collection	FeatureCollection	从中选择对象的输入集合。
properties	对象	用于比较的属性名称或属性名称列表。可以添加“.geo”属性来比较对象几何图形。

示例

代码编辑器 (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 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 in Belgium.
fc = ee.FeatureCollection('WRI/GPPD/power_plants').filter(
    'country_lg == "Belgium"')
display('FeatureCollection of power plants in Belgium:', fc)

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