on suitable devices, you could consider transparency,
plot(f,col=alpha("grey",0.8),pch=19)
baptiste
On 24 Apr 2009, at 14:09, Knut Krueger wrote:
f<- data.frame("x"=c(1,3,5,6,1),"y"=c(1,2,3,4,1))
plot(f)
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