On 17-1-2010 16:12, Doctor John wrote:
> andrel wrote:
>> I particularly like it that they used a ray-tracer to produce figure 1.
>
> I hadn't actually noticed that ...
>
> <checking>
>
> ...you're joking, aren't you?
I don't think you can create such graphics with an ordinary package like
Excel or SPSS. So, yes I might be.
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