AI-generated Key Takeaways
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List.frequency()
returns the number of times a specified element appears within an ee.List object. -
This function takes the element to search for as an argument and returns an integer representing its frequency in the list.
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It can be used with various data types, as demonstrated with integers in the provided examples.
Usage | Returns |
---|---|
List.frequency(element) | Integer |
Argument | Type | Details |
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this: list | List | |
element | Object |
Examples
Code Editor (JavaScript)
// An ee.Image list object. var list = ee.List([0, 1, 2, 2, 3, 4]); print('List of integers', list); // The ee.List.frequency function is used to determine how many times a value is // present in a list, e.g. what is the frequency of 0, 2, and 9 in the list. print('Frequency of value 0', list.frequency(0)); print('Frequency of value 2', list.frequency(2)); print('Frequency of value 9', list.frequency(9));
import ee import geemap.core as geemap
Colab (Python)
# An ee.Image list object. ee_list = ee.List([0, 1, 2, 2, 3, 4]) print('List of integer:', ee_list.getInfo()) # The ee.List.frequency function is used to determine how many times a value is # present in a list, e.g. what is the frequency of 0, 2, and 9 in the list. print('Frequency of value 0:', ee_list.frequency(0).getInfo()) print('Frequency of value 2:', ee_list.frequency(2).getInfo()) print('Frequency of value 9:', ee_list.frequency(9).getInfo())