Announcement: All noncommercial projects registered to use Earth Engine before April 15, 2025 must verify noncommercial eligibility to maintain Earth Engine access.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-07-13 UTC."],[[["This reducer calculates the number of unique, non-null inputs."],["The output is named \"count\" and represents the distinct input count."],["It is used within the Earth Engine environment and has no input arguments."]]],["This documentation describes a reducer, `ee.Reducer.countDistinctNonNull()`, which calculates the number of unique, non-null input values. The reducer operates without any arguments and outputs a `Reducer` object. The key action is counting distinct values, excluding nulls. When provided, the default output name for the result of this calculation will be \"count\".\n"]]