math.yn() function

math.yn() returns the order-n Bessel function of the second kind.

Function type signature

(n: int, x: float) => float

Parameters

n

(Required) Order number to use in the operation.

x

(Required) Value to operate on.

Examples

• Return the order-n Bessel function of a value
• Use math.yn in map

Return the order-n Bessel function of a value

import "math"

math.yn(n: 3, x: 3.14)// -0.4866506930335083

Use math.yn in map

import "math"

data
    |> map(fn: (r) => ({_time: r._time, _value: math.yn(n: r.n, x: r.x)}))