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Bald Eagle wrote:
> Ger <No.### [at] Thank You> wrote:
>
>> I just read (part of) the wiki page on linear regression, but since my
>> math knowledge hovers just above zero that pag
> e was mostly gibberish for me.
>
> Right - I'd have to say that very few people would know how to, or would
> be
> expected to implement, a least-squares regression analysis from scratch.
> It's a button-push feature on a lot of calculators, and it's implemented
> in spreadsheets like Excel or Open Office, as well as others.
>
> If it needs to be done on the fly, you might have to see if POV-Ray has
> the math
> functions required to give you what you need. Otherwise you could
> generate your data set with a 3rd party tool, and then run POV-Ray
> afterwards.
>
> plugging povray least squares into Google actually seems to pull up a
> number of links that look like they address exactly the problem you are
> looking for a
> solution to. Surf around some, and maybe you'll hit upon something
> useful. Let me know what you come up with.
Found a piece of code at
http://stackoverflow.com/questions/10781639/how-to-compute-normal-vector-to-least-square-plane-in-povray-only
Needed some slight tweaking but for as far as I can see now it does its job.
--
Ger
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