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Maps an algorithm over a collection.
Returns the mapped collection.
Usage
Returns
ImageCollection.map(algorithm,dropNulls)
Collection
Argument
Type
Details
this:collection
Collection
The Collection instance.
algorithm
Function
The operation to map over the images or features of the collection. A JavaScript function that receives an image or features and returns one. The function is called only once and the result is captured as a description, so it cannot perform imperative operations or rely on external state.
dropNulls
Boolean, optional
If true, the mapped algorithm is allowed to return nulls, and the elements for which it returns nulls will be dropped.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2023-10-06 UTC."],[[["\u003cp\u003eApplies a user-defined function (algorithm) to each element within an ImageCollection.\u003c/p\u003e\n"],["\u003cp\u003eReturns a new collection containing the results of applying the algorithm to each element.\u003c/p\u003e\n"],["\u003cp\u003eOptionally allows for removing elements where the algorithm returns null values using the \u003ccode\u003edropNulls\u003c/code\u003e parameter.\u003c/p\u003e\n"]]],[],null,["# ee.ImageCollection.map\n\n\u003cbr /\u003e\n\nMaps an algorithm over a collection.\n\n\u003cbr /\u003e\n\nReturns the mapped collection.\n\n| Usage | Returns |\n|-------------------------------------------------|------------|\n| ImageCollection.map`(algorithm, `*dropNulls*`)` | Collection |\n\n| Argument | Type | Details |\n|--------------------|-------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| this: `collection` | Collection | The Collection instance. |\n| `algorithm` | Function | The operation to map over the images or features of the collection. A JavaScript function that receives an image or features and returns one. The function is called only once and the result is captured as a description, so it cannot perform imperative operations or rely on external state. |\n| `dropNulls` | Boolean, optional | If true, the mapped algorithm is allowed to return nulls, and the elements for which it returns nulls will be dropped. |"]]
