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To reduce an Image, use image.reduce(). Reducing an image
functions in an analogous way to imageCollection.reduce(), except the
bands of the image are input to the reducer rather than the images in the collection. The
output is also an image with number of bands equal to number of reducer outputs. For
example:
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2023-10-06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."],[[["`image.reduce()` simplifies an image by applying a reducer function across its bands, similar to how `imageCollection.reduce()` works on image collections."],["The output of `image.reduce()` is a new image with band count equal to the reducer's output count, as seen when using `ee.Reducer.max()` to create a single-band image representing maximum values."],["This method allows for calculations across an image's bands, like finding the maximum value per pixel across multiple spectral bands, useful for data analysis and visualization."]]],[]]