[R] plot and subsets

[Erich Neuwirth]

i had not tried
as.integer or as.numeric
i just tried the factor variable itself.
now i know better.

thanks for all the help


Ben Bolker wrote:
> 
>  e.g.: to plot with colors 1 and 2 (easiest) and plotting characters 1 and
> 16:
> 
> x <- runif(10)
> y <- runif(10)
> z <- factor(sample(1:2,size=10,replace=TRUE))
> plot(x,y,col=as.numeric(z),pch=c(1,16)[as.numeric(z)])
> 

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Erich Neuwirth, Computer Supported Didactics Working Group
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