ee.FeatureCollection.aggregate_first

  • Aggregates over a collection, calculating the property value of the first object.

  • Used with a FeatureCollection and a specified property (String).

  • The aggregate_first method returns the value of the specified property for the first feature in the collection.

 Aggregates over a given property of the objects in a collection, calculating the property value of the first object in the collection.

UsageReturns
FeatureCollection.aggregate_first(property)
ArgumentTypeDetails
this: collectionFeatureCollectionThe collection to aggregate over.
propertyStringThe 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('Fuel source for first power plant in the collection',
      fc.aggregate_first('fuel1'));  // Wind

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"')

print('Fuel source for first power plant in the collection:',
      fc.aggregate_first('fuel1').getInfo())  # Wind