Announcement: All noncommercial projects registered to use Earth Engine beforeApril 15, 2025 mustverify noncommercial eligibility to maintain access. If you have not verified by September 26, 2025, your access may be on hold.
ee.ImageCollection.reduceColumns Stay organized with collections Save and categorize content based on your preferences.
Apply a reducer to each element of a collection, using the given selectors to determine the inputs.
Returns a dictionary of results, keyed with the output names.
| Usage | Returns |
|---|---|
ImageCollection.reduceColumns(reducer, selectors,weightSelectors) | Dictionary |
| Argument | Type | Details |
|---|---|---|
this:collection | FeatureCollection | The collection to aggregate over. |
reducer | Reducer | The reducer to apply. |
selectors | List | A selector for each input of the reducer. |
weightSelectors | List, default: null | A selector for each weighted input of the reducer. |
Except as otherwise noted, the content of this page is licensed under theCreative Commons Attribution 4.0 License, and code samples are licensed under theApache 2.0 License. For details, see theGoogle Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2023-10-06 UTC.