Stephen <mcavoys_at@aoldotcom> wrote:
> On 23/04/2012 12:16 AM, Stephen wrote:
>
> Thanks to both of you. I got what I was aiming for.
>
>
> --
> Regards
>      Stephen

Hi Stephen

the sinc function (sin(r)/r) gives good ripples (where r=sqrt(x^2+y^2)) - it
pops up often in physics esp where waves are concerned and is nice and simple
too :)

stu

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