[PD] expression with arctn

IOhannes m zmölnig zmoelnig at iem.at
Sun Feb 2 21:00:13 CET 2020

Am 2. Februar 2020 20:52:14 MEZ schrieb "Csaba Láng" <langcsaba at gmail.com>:
>thank you gentlemen, this is what I needed. never figured out that atan

in general, you might prefer `atan2` over `atan`, as this allows for all four quadrants.

`[expr]` has both variants.


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