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