[gameprogrammer] Re: mapping numbers to colors

like 3 groups would yeild the colours
(85,85,85),(127,127,127) and (212,212,212).

that works well for grey scale, but for 3 groups id more be looking for:

(255,0,0),(0,255,0),(0,0,255)

so there is a high contrast of color. dont know the mathematical means to
distribute it like that though :P

----- Original Message ----- 
From: "Jake The Snake Briggs" <jacob_briggs@xxxxxxxxxxxxxxx>
To: <gameprogrammer@xxxxxxxxxxxxx>
Sent: Thursday, December 02, 2004 2:06 PM
Subject: [gameprogrammer] Re: mapping numbers to colors


> Binary partition of the colour space. Assign your colors a number, say 0
> through 100. 1 group would yeild the colour at position 0. 3 groups
> would be 25,50 and 75. 4 would be 0,25,50,100, 5 would be
> 0,25,50,75,100. Or you could do it with percentage's. 1 group would be
> 1/1 with would be the colour referenced by 100. 3 groups would be 1/3,
> the colours would be 33,66 and 100. 5 groups would be 1/5,
20,40,60,80,100.
>
> I am sure there is a better way, maybe working directly with the r,g,b
> values, but i am sure you get the idea of what i am talking about.
>
> If each r,g,b  value can be between 0 and 255, you could just partition
> each of those spaces. like 3 groups would yeild the colours
> (85,85,85),(127,127,127) and (212,212,212).
> If this makes no sence, just ignore my brain dump....
>
>
> Alan Wolfe wrote:
>
> >Hey guys,
> >wierd question, possibly straight out of the old school days...
> >
> >I'm making some line graphs and i have X number of groups of data.
> >
> >X could be 1 or it could be 20, it varies.
> >
> >What im trying to do is come up with a good way to automaticly set colors
to these groups of data.
> >
> >ie if there were 2 groups, 1 line could be red and the 2nd line could be
blue.
> >
> >if there were 4 groups, i could use red, blue, yellow, green for the
lines etc.
> >
> >Does anyone know a way to algorithmicly come up with X number of colors,
that are as far apart visualy as possible?  Cause if theres 5 groups of data
and they are all shades of blue, thats not very good.
> >
> >Thanks a bunch for any help :P
> >Atrix
> >
> >
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