[PD] expression with arctn

[Csaba Láng]

Back to the difference of Iohannes' suggestions, looks like [expr atan...]
gives results only from -90 to 90 degrees, [atan2] gives from -180 to 180.
And the atan2 is 90 degree rotated: atan2 results 0 degree on (1;0) while
the expression gives 0 degrees on (0;1) and (0;-1).

On Mon, Feb 3, 2020 at 1:28 AM Alexandre Torres Porres <porres at gmail.com>
wrote:

>
>
> Em dom., 2 de fev. de 2020 às 11:49, Jack <jack at rybn.org> escreveu:
>
>> Hello,
>>
>> You can look at :
>> http://yadegari.org/expr/expr.html
>
>
> best look at the help file of [expr], it is much more up to date than that
> link (unless you're not using the latest vanilla)
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