ee.Dictionary.combine

合并两个字典。如果存在重复名称，除非 overwrite 为 false，否则输出将包含第二个字典的值。系统会忽略 / 移除两个字典中的 null 值。

用法返回
Dictionary.combine(second, overwrite)字典
参数类型详细信息
此：first字典
second字典
overwrite布尔值，默认值：true

示例

代码编辑器 (JavaScript)

// A dictionary (e.g. results of ee.Image.reduceRegion of an S2 image).
var dict1 = ee.Dictionary({
  B1: 182,
  B2: 219,
  B3: 443
});

// A second dictionary.
var dict2 = ee.Dictionary({
  Region: 'The Forest of Nisene Marks State Park',
  Image: 'Sentinel-2 surface reflectance (scaled by 1e4)',
  B1: -9999  // Note that the B1 key is present in both dictionaries.
});

print('Combined dictionaries (overwrite false)',
      dict1.combine(dict2, false));

print('Combined dictionaries (overwrite true)',
      dict1.combine(dict2, true));

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)

# A dictionary (e.g. results of ee.Image.reduceRegion of an S2 image).
dic_1 = ee.Dictionary({
    'B1': 182,
    'B2': 219,
    'B3': 443
})

# A second dictionary.
dic_2 = ee.Dictionary({
    'Region': 'The Forest of Nisene Marks State Park',
    'Image': 'Sentinel-2 surface reflectance (scaled by 1e4)',
    'B1': -9999  # Note that the B1 key is present in both dictionaries.
})

display('Combined dictionaries (overwrite false)', dic_1.combine(dic_2, False))

display('Combined dictionaries (overwrite true)', dic_1.combine(dic_2, True))