Re: [R] 2d plotting and colours

From: TEMPL Matthias <Matthias.Templ_at_statistik.gv.at>
Date: Wed 30 Mar 2005 - 16:45:54 EST


Hi!

There are more than 8 colors.

x <- rbind(matrix(rnorm(100, sd = 0.3), ncol = 2),

                matrix(rnorm(100, mean = 1, sd = 0.3), ncol = 2))
     

(cl <- kmeans(x, i, 20))     

s <- c("tomato4", "turquoise", "slateblue", "wheat", "snow", "skyblue", "peru", "pink")
# see at:
colors()      

plot(x, col = s)      

points(cl$centers, col = s, pch = 8, cex=2)

Best,
Matthias

> Hi!
>
> I am new to R just 3 days in it and i apologize if my
> questions seem very
> trivial and consumed your valuable time.
>
> I am coding in perl and i stumbled upon R regarding plotting good
> statistical graphs.
>
> I tried the kmean clustering for a large matrix ,say > 150 *
> 150 . I tried
> the example code given in the tutorial to perform 2d plot
>
> # i ranges from 2 to 10
> cl <- kmeans(x, i, 20)
> plot(x, col = cl$cluster)
> points(cl$centers, col = 1:i )
>
> I see that there are only 8 colours defined , namely
> black,red,green,blue,cyan,magenta,yello,gray.
>
> How should i set my colour preferences to obtain my palette
> of colours? I
> checked in the totorial which talks about R.colors and
> palatte , but i
> failed to understand how to set it.
>
> Thank You
>
> Asha
>
>
> MSN Messenger!
>
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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed Mar 30 16:56:47 2005

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