*brilliant*
thank you all.
i can google solutions for hours, but nothing beats a collection of
exceptional human brains.


On Tue, Dec 20, 2011 at 9:10 AM, Cary Gordon <[log in to unmask]> wrote:

> Okay, maybe it is me.
>
> (255*(x-6))/451
>
> On Tue, Dec 20, 2011 at 9:03 AM, James Stuart <[log in to unmask]>
> wrote:
> >  255 * (point - data.min) / (data.max - data.min)
> >
> > On Tue, Dec 20, 2011 at 11:57 AM, Nate Hill <[log in to unmask]>
> wrote:
> >> Here's a brain teaser for the mathematically inclined:
> >>
> >> I've got a set of values that I want to scale to the 0-255 range so
> that I
> >> can adjust colors in my CSS.
> >> Say I have the following data: (6, 457, 97, 200, 122).
> >> I'd like to scale those numbers so that the highest one, 475 = 255.
> >> and the lowest one, 6 = 0.
> >> All of the other numbers, 97, 200, and 122 should be scaled
> proportionally
> >> to fit within the range.
> >>
> >> This way, when I loop through and hit my CSS {background-color:rgb(255,
> >> **data**, 255);} each piece of data will generate a different color and
> >> I'll have the maximum spread in proportionally correct colors from
> 0-255.
> >>
> >> There's probably some math operation to do this, but I know I paid far
> too
> >> little attention in math class as a kid.  "When will I ever need to use
> >> this stuff in *real life*", I asked the teacher with a sneer.
> >>
> >> If anyone could point me in the right direction I'd appreciate it.
> >>
> >> --
> >> Nate Hill
> >> [log in to unmask]
> >> http://www.natehill.net
>
>
>
> --
> Cary Gordon
> The Cherry Hill Company
> http://chillco.com
>



-- 
Nate Hill
[log in to unmask]
http://www.natehill.net