ee.FeatureCollection.aggregate_array

    • 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
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