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

title	description	menu	weight
math.mMax() function	`math.mMax()` returns the larger of `x` or `y`.	flux_v0_ref name parent identifier math.mMax math math/mMax	101

math.mMax() returns the larger of x or y.

Function type signature

(x: float, y: float) => float

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Parameters

x

({{< req >}}) x-value to use in the operation.

y

({{< req >}}) y-value to use in the operation.

Examples

• Return the larger of two values
• Use math.mMax in map

Return the larger of two values

import "math"

math.mMax(x: 1.23, y: 4.56)// 4.56

Use math.mMax in map

import "math"

data
    |> map(fn: (r) => ({_time: r._time, _value: math.mMax(x: r.t1, y: r.t2)}))

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Input data

_time	t1	t2
2021-01-01T00:00:00Z	-2.18	19.85
2021-01-01T00:00:10Z	10.92	4.97
2021-01-01T00:00:20Z	7.35	-3.75
2021-01-01T00:00:30Z	17.53	19.77
2021-01-01T00:00:40Z	15.23	13.86
2021-01-01T00:00:50Z	4.43	1.86

Output data

_time	_value
2021-01-01T00:00:00Z	19.85
2021-01-01T00:00:10Z	10.92
2021-01-01T00:00:20Z	7.35
2021-01-01T00:00:30Z	19.77
2021-01-01T00:00:40Z	15.23
2021-01-01T00:00:50Z	4.43

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