math:arctan() | Data Analysis 1.143.0-1.153.3

`math:arctan()`

Calculates the arc tangent of a value; the returned angle is in the range -π/2 through π/2.

Parameter	Type	Required	Default Value	Description
`as`	string	optional^[a]	`_arctan`	The name of the output field.
`field`^[b]	string	required		The name of the input field.
^[a]Optional parameters use their default value unless explicitly set. ^[b]The argument name `field` can be omitted.

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Omitted Argument Names
The argument name for field can be omitted; the following forms of this function are equivalent:
logscale
math:arctan("field")
and:
logscale
math:arctan(field="field")
These examples show basic structure only.