125 lines
3.2 KiB
Markdown
125 lines
3.2 KiB
Markdown
---
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title: math.pow10() function
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description: >
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`math.pow10()` returns 10**n, the base-10 exponential of `n`.
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menu:
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flux_v0_ref:
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name: math.pow10
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parent: math
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identifier: math/pow10
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weight: 101
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---
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<!------------------------------------------------------------------------------
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IMPORTANT: This page was generated from comments in the Flux source code. Any
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edits made directly to this page will be overwritten the next time the
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documentation is generated.
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To make updates to this documentation, update the function comments above the
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function definition in the Flux source code:
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https://github.com/influxdata/flux/blob/master/stdlib/math/math.flux#L1828-L1828
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Contributing to Flux: https://github.com/influxdata/flux#contributing
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Fluxdoc syntax: https://github.com/influxdata/flux/blob/master/docs/fluxdoc.md
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------------------------------------------------------------------------------->
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`math.pow10()` returns 10**n, the base-10 exponential of `n`.
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##### Function type signature
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```js
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(n: int) => float
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```
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{{% caption %}}
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For more information, see [Function type signatures](/flux/v0/function-type-signatures/).
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{{% /caption %}}
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## Parameters
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### n
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({{< req >}})
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Exponent value.
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## Examples
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- [Return the base-10 exponential of n](#return-the-base-10-exponential-of-n)
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- [Use math.pow10 in map](#use-mathpow10-in-map)
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### Return the base-10 exponential of n
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```js
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import "math"
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math.pow10(n: 3)// 1000.0
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```
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### Use math.pow10 in map
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```js
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import "math"
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import "sampledata"
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sampledata.int()
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|> map(fn: (r) => ({r with _value: math.pow10(n: r._value)}))
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```
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{{< expand-wrapper >}}
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{{% expand "View example input and output" %}}
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#### Input data
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| _time | _value | *tag |
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| -------------------- | ------- | ---- |
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| 2021-01-01T00:00:00Z | -2 | t1 |
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| 2021-01-01T00:00:10Z | 10 | t1 |
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| 2021-01-01T00:00:20Z | 7 | t1 |
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| 2021-01-01T00:00:30Z | 17 | t1 |
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| 2021-01-01T00:00:40Z | 15 | t1 |
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| 2021-01-01T00:00:50Z | 4 | t1 |
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| _time | _value | *tag |
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| -------------------- | ------- | ---- |
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| 2021-01-01T00:00:00Z | 19 | t2 |
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| 2021-01-01T00:00:10Z | 4 | t2 |
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| 2021-01-01T00:00:20Z | -3 | t2 |
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| 2021-01-01T00:00:30Z | 19 | t2 |
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| 2021-01-01T00:00:40Z | 13 | t2 |
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| 2021-01-01T00:00:50Z | 1 | t2 |
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#### Output data
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| _time | _value | *tag |
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| -------------------- | ------------------ | ---- |
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| 2021-01-01T00:00:00Z | 0.01 | t1 |
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| 2021-01-01T00:00:10Z | 10000000000 | t1 |
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| 2021-01-01T00:00:20Z | 10000000 | t1 |
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| 2021-01-01T00:00:30Z | 100000000000000000 | t1 |
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| 2021-01-01T00:00:40Z | 1000000000000000 | t1 |
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| 2021-01-01T00:00:50Z | 10000 | t1 |
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| _time | _value | *tag |
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| -------------------- | -------------------- | ---- |
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| 2021-01-01T00:00:00Z | 10000000000000000000 | t2 |
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| 2021-01-01T00:00:10Z | 10000 | t2 |
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| 2021-01-01T00:00:20Z | 0.001 | t2 |
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| 2021-01-01T00:00:30Z | 10000000000000000000 | t2 |
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| 2021-01-01T00:00:40Z | 10000000000000 | t2 |
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| 2021-01-01T00:00:50Z | 10 | t2 |
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{{% /expand %}}
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{{< /expand-wrapper >}}
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