[R] getChannels(fig, "red")

[Francisco do Nascimento Junior]

Hello, expeRts,

I'm using the function getChannels for capture the matriz of R,G,B of a
figure. I think that its returns values between 0 and 255, but the matriz
contents values between 0 and 1. Somebody could explain me that values are
these, pls?
Tks,
Francisco.

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Francisco Júnior,
Computer Science - UFPE-Brazil
"One life has more value that the
world whole"
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

On Tue, 28 Jan 2003, John Fox wrote:

> Dear Luis,
>
> At 04:23 PM 1/28/2003 +0000, Luis Silva wrote:
> >Thanks to all! as.character solved my problem. And if I wanted
> >different colors instead?
>
>
> The argument col is also vectorized, so something like plot( ....,
> col=class) will work if class consists of small intergers. Alternatively,
> use class to index a vector of colors, as in col=c("red", "green",
> "blue")[class].
>
> John
>
> -----------------------------------------------------
> John Fox
> Department of Sociology
> McMaster University
> Hamilton, Ontario, Canada L8S 4M4
> email: jfox at mcmaster.ca
> phone: 905-525-9140x23604
> web: www.socsci.mcmaster.ca/jfox
> -----------------------------------------------------
>
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