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math.tan() function

content/flux/v0/stdlib/math/tan.md

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<!------------------------------------------------------------------------------ IMPORTANT: This page was generated from comments in the Flux source code. Any edits made directly to this page will be overwritten the next time the documentation is generated. To make updates to this documentation, update the function comments above the function definition in the Flux source code: https://github.com/influxdata/flux/blob/master/stdlib/math/math.flux#L2133-L2133 Contributing to Flux: https://github.com/influxdata/flux#contributing Fluxdoc syntax: https://github.com/influxdata/flux/blob/master/docs/fluxdoc.md ------------------------------------------------------------------------------->

math.tan() returns the tangent of the radian argument x.

Function type signature
js
(x: float) => float

{{% caption %}} For more information, see Function type signatures. {{% /caption %}}

Parameters

x

({{< req >}}) Value to operate on.

Examples

Return the tangent of a radian value

js
import "math"

math.tan(x: 3.14)// -0.001592654936407223

Use math.tan in map

js
import "math"
import "sampledata"

sampledata.float()
    |> map(fn: (r) => ({r with _value: math.tan(x: r._value)}))

{{< expand-wrapper >}} {{% expand "View example input and output" %}}

Input data

_time*tag_value
2021-01-01T00:00:00Zt1-2.18
2021-01-01T00:00:10Zt110.92
2021-01-01T00:00:20Zt17.35
2021-01-01T00:00:30Zt117.53
2021-01-01T00:00:40Zt115.23
2021-01-01T00:00:50Zt14.43
_time*tag_value
2021-01-01T00:00:00Zt219.85
2021-01-01T00:00:10Zt24.97
2021-01-01T00:00:20Zt2-3.75
2021-01-01T00:00:30Zt219.77
2021-01-01T00:00:40Zt213.86
2021-01-01T00:00:50Zt21.86

Output data

_time_value*tag
2021-01-01T00:00:00Z1.4332105287001917t1
2021-01-01T00:00:10Z13.206812562189944t1
2021-01-01T00:00:20Z1.8132901361470621t1
2021-01-01T00:00:30Z-3.8961501504145963t1
2021-01-01T00:00:40Z-0.5180248236402568t1
2021-01-01T00:00:50Z3.446580763443108t1
_time_value*tag
2021-01-01T00:00:00Z1.5589299766884657t2
2021-01-01T00:00:10Z-3.7955688539089367t2
2021-01-01T00:00:20Z-0.6965508511114601t2
2021-01-01T00:00:30Z1.3144743689586664t2
2021-01-01T00:00:40Z3.515068256260714t2
2021-01-01T00:00:50Z-3.3608276755646553t2

{{% /expand %}} {{< /expand-wrapper >}}