[pstricks] arctan

[Manfred Braun]

Hi Doris,
Actually the arctan function, unlike arcos and arcsin, is inherently
available in PostScript. It is constructed like the atan2 function in
FORTRAN, i.e., it needs two arguments:
  y  x  atan  ->  angle
The resulting angle  arctan (y/x)  is provided in the interval
0 <= angle < 360.  Thus you may write, for instance,
  -1.0  0.0  atan
and get the result  270.0 (degrees)  without any overflow.
Best regards,
Manfred

-----Ursprüngliche Nachricht-----
Von: pstricks-bounces at tug.org [mailto:pstricks-bounces at tug.org] Im Auftrag
von Doris Wagner
Gesendet: Sonntag, 2. Dezember 2007 19:50
An: Graphics PSTricks with
Betreff: [pstricks] arctan

hi list,

in my pstricks-book in the section about pst-plot, there are functions 
acos and asin, but no atan.
How can I get arcus tangens?

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