ee.Dictionary.set

  • The Dictionary.set method is used to assign a new value to a specified key within an existing Earth Engine dictionary.

  • It accepts the dictionary, the key to be updated, and the new value as arguments.

  • The method returns a new dictionary with the updated key-value pair, leaving the original dictionary unchanged.

  • This functionality is useful for modifying data within Earth Engine dictionaries, like those containing image band values or other geospatial information.

Set a value in a dictionary.

UsageReturns
Dictionary.set(key, value)Dictionary
ArgumentTypeDetails
this: dictionaryDictionary
keyString
valueObject

Examples

Code Editor (JavaScript)

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

print('Set value for B3 key as -9999', dict.set('B3', -9999));

Python setup

See the Python Environment page for information on the Python API and using geemap for interactive development.

import ee
import geemap.core as geemap

Colab (Python)

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

print('Set value for B3 key as -9999:', dic.set('B3', -9999).getInfo())