--- title: experimental.kaufmansAMA() function description: > `experimental.kaufmansAMA()` calculates the Kaufman's Adaptive Moving Average (KAMA) of input tables using the `_value` column in each table. menu: flux_v0_ref: name: experimental.kaufmansAMA parent: experimental identifier: experimental/kaufmansAMA weight: 101 flux/v0/tags: [transformations] introduced: 0.107.0 --- `experimental.kaufmansAMA()` calculates the Kaufman's Adaptive Moving Average (KAMA) of input tables using the `_value` column in each table. Kaufman's Adaptive Moving Average is a trend-following indicator designed to account for market noise or volatility. ##### Function type signature ```js (<-tables: stream[{A with _value: B}], n: int) => stream[{A with _value: float}] where B: Numeric ``` {{% caption %}} For more information, see [Function type signatures](/flux/v0/function-type-signatures/). {{% /caption %}} ## Parameters ### n ({{< req >}}) Period or number of points to use in the calculation. ### tables Input data. Default is piped-forward data (`<-`). ## Examples ### Calculate the KAMA of input tables ```js import "experimental" import "sampledata" sampledata.int() |> experimental.kaufmansAMA(n: 3) ``` {{< expand-wrapper >}} {{% expand "View example input and output" %}} #### Input data | _time | _value | *tag | | -------------------- | ------- | ---- | | 2021-01-01T00:00:00Z | -2 | t1 | | 2021-01-01T00:00:10Z | 10 | t1 | | 2021-01-01T00:00:20Z | 7 | t1 | | 2021-01-01T00:00:30Z | 17 | t1 | | 2021-01-01T00:00:40Z | 15 | t1 | | 2021-01-01T00:00:50Z | 4 | t1 | | _time | _value | *tag | | -------------------- | ------- | ---- | | 2021-01-01T00:00:00Z | 19 | t2 | | 2021-01-01T00:00:10Z | 4 | t2 | | 2021-01-01T00:00:20Z | -3 | t2 | | 2021-01-01T00:00:30Z | 19 | t2 | | 2021-01-01T00:00:40Z | 13 | t2 | | 2021-01-01T00:00:50Z | 1 | t2 | #### Output data | _time | _value | *tag | | -------------------- | ------------------ | ---- | | 2021-01-01T00:00:30Z | 9.72641183951902 | t1 | | 2021-01-01T00:00:40Z | 10.097401019601417 | t1 | | 2021-01-01T00:00:50Z | 9.972614968115325 | t1 | | _time | _value | *tag | | -------------------- | ------------------- | ---- | | 2021-01-01T00:00:30Z | -2.9084287200832466 | t2 | | 2021-01-01T00:00:40Z | -2.142970089472789 | t2 | | 2021-01-01T00:00:50Z | -2.0940721758134693 | t2 | {{% /expand %}} {{< /expand-wrapper >}}