by Odysseus <odysseus1479-at@[EMAIL PROTECTED]
>
Jul 8, 2008 at 02:19 AM
In article <Mbuck.30031$s77.28836@[EMAIL PROTECTED]
>,
Bill <Bill@[EMAIL PROTECTED]
> wrote:
> Odysseus,
> > I get the impression Bill is after a sigmoid shape: perhaps
> > something like
> >
> > s = (9/20)(curt((t/5)-1) + 11/9)
> That is correct, I am after a Sigmoid shape. I didn't quite
> understand your function, what is curt?
Sorry if that was obscure. I meant the cube root:
s = (9/20)(((t/5) - 1)^(1/3) + 11/9)
> Can your function be modified so that it only accelerates at the
> intro or decelerates at the outro or both?
Yes: the first two (substituting "mostly" for "only") respectively by
removing or doubling the "- 1" under the cube root, then tweaking the
scale and offset constants to suit -- but a half-parabola would be
simpler. I'm not quite sure what you mean by "both".
--
Odysseus
