ee.Reducer.median
Create a reducer that will compute the median of the inputs. For small numbers of inputs (up to maxRaw) the median will be computed directly; for larger numbers of inputs the median will be derived from a histogram.
| Usage | Returns |
|---|
ee.Reducer.median(maxBuckets, minBucketWidth, maxRaw) | Reducer |
| Argument | Type | Details |
|---|
maxBuckets | Integer, default: null | The maximum number of buckets to use when building a histogram; will be rounded up to a power of 2. |
minBucketWidth | Float, default: null | The minimum histogram bucket width, or null to allow any power of 2. |
maxRaw | Integer, default: null | The number of values to accumulate before building the initial histogram. |
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2024-07-13 UTC.
[null,null,["Last updated 2024-07-13 UTC."],[[["This reducer calculates the median of input values, using either direct computation or a histogram-based approach depending on the input size."],["For small datasets (up to `maxRaw` values), the median is computed directly from the raw input values."],["For larger datasets, the reducer constructs a histogram with a maximum of `maxBuckets`, potentially rounding up to the nearest power of 2, and `minBucketWidth` as the minimum width of each bucket for efficient approximation."],["Users can control the calculation process by specifying parameters like `maxBuckets`, `minBucketWidth`, and `maxRaw` to customize the reducer's behavior."]]],["The core content describes a reducer that calculates the median of inputs. For smaller datasets (up to `maxRaw`), the median is directly computed. Larger datasets utilize a histogram for median derivation. The `ee.Reducer.median` function creates this reducer, accepting `maxBuckets` (maximum histogram buckets), `minBucketWidth` (minimum bucket size), and `maxRaw` (raw values threshold) as parameters to customize the histogram creation.\n"]]