Or if you want a nice curve:

function (x) { 5 - 2.25*cos(pi*x/50) }

-- 
Tek
http://evilsuperbrain.com

"Tek" <tek### [at] evilsuperbraincom> wrote in message 
news:453194c0@news.povray.org...
> function (x) { 5-4.5*abs(x-50)/50 }
>
> I think...
>
> -- 
> Tek
> http://evilsuperbrain.com
>
> "Chrisir" <nomail@nomail> wrote in message 
> news:web.45317c2b6ccf04ff15b159e0@news.povray.org...
>>
>>
>> Hello!
>>
>> I am having problems with my maths here.
>>
>> I need a function f(index) that for my index going from 0 to 100 (so 
>> it's:
>> 0,1,2,3,4...99,100) returns the values between 0.5 and 5 for index 
>> between
>> 0 and 50 and then between 5 and 0.5 back again for index between 50 and
>> 100.
>>
>> So the return value goes for example 0.5, 0.7, 1, 1.3...5, 4.8,4.2....0.5
>>
>> Thank you very much!
>>
>> Greetings,
>>
>> Chrisir
>>
>>
>>
>>
>>
>
>

Post a reply to this message