On 24/04/2012 11:34 PM, Crippso wrote:
> 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

Thanks Stu
I had not heard of the sinc function and will bear it in mind for future 
use.

-- 
Regards
     Stephen

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