Syntax is (without the spaces):
function amplitude +/- y-offset @ period +/- x-offset (in seconds)
e.g. sin10-30@600-3600 — sinewave of amplitudes -10 and 10; offset by -30 (i.e. between -40 and -20); period of 600 seconds; offset by -3600 seconds (1 hr)*
Function supported are:
- sin (sine)
- cos (cosine)
- saw (saw wave)
- sq (square wave)
- sc (S-curve)
- rand (repeatable random number)