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ee.Reducer.autoHistogram
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创建一个将计算输入直方图的 reducer。输出是一个 Nx2 数组,包含每个区间的下限和计数(或累计计数),适合按像素使用。
用法 | 返回 |
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ee.Reducer.autoHistogram(maxBuckets, minBucketWidth, maxRaw, cumulative) | 缩减器 |
参数 | 类型 | 详细信息 |
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maxBuckets | 整数,默认值:null | 构建直方图时要使用的最大分桶数;将向上舍入为 2 的幂。 |
minBucketWidth | 浮点数,默认值:null | 最小直方图分桶宽度,如果为 null,则允许任何 2 的幂。 |
maxRaw | 整数,默认值:null | 在构建初始直方图之前要累积的值的数量。 |
cumulative | 布尔值,默认值:false | |
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最后更新时间 (UTC):2025-07-26。
[null,null,["最后更新时间 (UTC):2025-07-26。"],[[["\u003cp\u003eCreates a histogram reducer to analyze data distribution across buckets.\u003c/p\u003e\n"],["\u003cp\u003eCustomizable with parameters for maximum buckets, minimum bucket width, initial raw data size for histogram creation, and cumulative count option.\u003c/p\u003e\n"],["\u003cp\u003eOutputs an Nx2 array, ideal for per-pixel analysis, representing bucket boundaries and their corresponding counts.\u003c/p\u003e\n"]]],["This documentation describes a reducer for computing histograms. The `ee.Reducer.autoHistogram` function generates a reducer that outputs an Nx2 array of lower bucket bounds and their counts. Key parameters include `maxBuckets` (maximum number of buckets, rounded up to a power of 2), `minBucketWidth` (minimum bucket width), `maxRaw` (values to accumulate before histogram build), and `cumulative` (boolean for cumulative counts).\n"],null,["# ee.Reducer.autoHistogram\n\nCreate a reducer that will compute a histogram of the inputs. The output is a Nx2 array of the lower bucket bounds and the counts (or cumulative counts) of each bucket and is suitable for use per-pixel.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|-----------------------------------------------------------------------------------------------|---------|\n| `ee.Reducer.autoHistogram(`*maxBuckets* `, `*minBucketWidth* `, `*maxRaw* `, `*cumulative*`)` | Reducer |\n\n| Argument | Type | Details |\n|------------------|-------------------------|-----------------------------------------------------------------------------------------------------|\n| `maxBuckets` | Integer, default: null | The maximum number of buckets to use when building a histogram; will be rounded up to a power of 2. |\n| `minBucketWidth` | Float, default: null | The minimum histogram bucket width, or null to allow any power of 2. |\n| `maxRaw` | Integer, default: null | The number of values to accumulate before building the initial histogram. |\n| `cumulative` | Boolean, default: false | |"]]