ee.FeatureCollection.aggregate_array

Page Summary

• The aggregate_array function on a FeatureCollection gathers all values for a specified property from objects in the collection.

• This function takes a FeatureCollection and a string representing the property name as arguments.

• It returns a list containing the values of the specified property from each element in the collection.

Aggregates over a given property of the objects in a collection, calculating a list of all the values of the selected property.

Usage	Returns
FeatureCollection.aggregate_array(property)	List

Argument	Type	Details
this: collection	FeatureCollection	The collection to aggregate over.
property	String	The property to use from each element of the collection.

Examples

Code Editor (JavaScript)

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

print('Power plant fuel sources',
      fc.aggregate_array('fuel1'));  // ee.List

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)

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

display('Power plant fuel sources:',
        fc.aggregate_array('fuel1'))  # ee.List