ee.ImageCollection.reduceColumns
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. |
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Last updated 2023-10-06 UTC.
[null,null,["Last updated 2023-10-06 UTC."],[[["The `reduceColumns` method aggregates data from an ImageCollection using a specified reducer function and selected inputs."],["It returns a dictionary containing the results, organized by output names specified in the reducer."],["Users define input data through selectors and optionally assign weights to inputs using weightSelectors."],["The function is available as a method on ImageCollections and accepts the reducer, selectors, and optional weightSelectors as arguments."]]],["The function `reduceColumns` applies a reducer to each element in a FeatureCollection. It utilizes specified selectors to define reducer inputs and, optionally, weighted inputs. The function takes a reducer, a list of selectors, and an optional list of weight selectors as arguments. It returns a dictionary where keys are output names and values are the results of applying the reducer to the collection's elements.\n"]]