docs-v2/content/flux/v0/stdlib/math/abs.md

title	description	menu	weight
math.abs() function	`math.abs()` returns the absolute value of `x`.	flux_v0_ref name parent identifier math.abs math math/abs	101

math.abs() returns the absolute value of x.

Function type signature

(x: float) => float

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Parameters

x

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

Examples

• Return the absolute value
• Use math.abs in map

Return the absolute value

math.abs(x: -1.22)// 1.22

Use math.abs in map

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

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Input data

_time	*tag	_value
2021-01-01T00:00:00Z	t1	-2.18
2021-01-01T00:00:10Z	t1	10.92
2021-01-01T00:00:20Z	t1	7.35
2021-01-01T00:00:30Z	t1	17.53
2021-01-01T00:00:40Z	t1	15.23
2021-01-01T00:00:50Z	t1	4.43

_time	*tag	_value
2021-01-01T00:00:00Z	t2	19.85
2021-01-01T00:00:10Z	t2	4.97
2021-01-01T00:00:20Z	t2	-3.75
2021-01-01T00:00:30Z	t2	19.77
2021-01-01T00:00:40Z	t2	13.86
2021-01-01T00:00:50Z	t2	1.86

Output data

_time	_value	*tag
2021-01-01T00:00:00Z	2.18	t1
2021-01-01T00:00:10Z	10.92	t1
2021-01-01T00:00:20Z	7.35	t1
2021-01-01T00:00:30Z	17.53	t1
2021-01-01T00:00:40Z	15.23	t1
2021-01-01T00:00:50Z	4.43	t1

_time	_value	*tag
2021-01-01T00:00:00Z	19.85	t2
2021-01-01T00:00:10Z	4.97	t2
2021-01-01T00:00:20Z	3.75	t2
2021-01-01T00:00:30Z	19.77	t2
2021-01-01T00:00:40Z	13.86	t2
2021-01-01T00:00:50Z	1.86	t2

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