"Greg M. Johnson" <p t e r a n d o n @
thecommononethatstartswithY.com> wrote in message
news:437563c5@news.povray.org
> Did some tweaking with a way to get non-linear movement.  I'd had
> one before, but when I actually plotted the curve, it was
> embarassing how little deviation from linearity there was.
>
> Now I've got it set up, perhaps too strongly, with a cos()^n, n<1
> function. A buggy version of this code is release in my recent p.g.
> posting.
>
> So the point is to see to what extent the movement in the raising
> of the hand is like that of a real human,

Doesn't look quite right to me.  Have you tried something like 
cos(x)*e^(-kx) which would represent a standard mass/spring/damper system? 
To a first approximation, that's how our muscles work.

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