[R] Overlapping plot in lattice

[Dennis Murphy]

Hi:

One way is to create a vector of pch values that you can pass into xyplot, e.g.,

dd <- data.frame(x = 1:10, y = 1:10, pch = c(rep(1, 5), 16, rep(1, 4)))
library('lattice')
xyplot(y ~ x, data = dd, pch = dd$pch, col = 1)

HTH,
Dennis

On Fri, Sep 30, 2011 at 12:01 AM, Kang Min <ngokangmin at gmail.com> wrote:
> Hi all,
>
> I was wondering if there's an equivalent to par(new=T) of the plot
> function in lattice. I'm plotting an xyplot, and I would like to
> highlight one point by plotting that one point again using a different
> symbol.
>
> For example, where 6 is highlighted:
> plot(1:10, xlim=c(0,10), ylim=c(0,10))
> par(new=T)
> plot(6,6, xlim=c(0,10), ylim=c(0,10), pch=16)
>
> Is there a way to do this in lattice?
>
> Thanks,
> Kang Min
>
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