Re: [R] coloring individual points in lattice xyplot

From: Deepayan Sarkar <>
Date: Wed 05 Jul 2006 - 04:24:36 EST

On 7/4/06, Gabor Grothendieck <> wrote:
> If I wish to color groups in xyplot I can do this:
> library(lattice)
> x <- 1:10
> y <- cbind(x, x+1)
> xyplot(y ~ rep(x,2), group = col(y), col = 1:2)
> How do I color different points differently within a group.
> For example, I want to produce this plot (except that I only
> want to have two groups, not 11):
> xyplot(y ~ rep(x,2), group = c(rep(1, 10), 2:11), col = 1:11)
> I am thinking of something like this (although
> this does not work, its just to get the idea across):
> xyplot(y ~ rep(x,2), group = col(y), col = list(1, 2:11))
> where, in general, I have a list with one component per group
> whose elements are scalars to color the whole group or
> vectors one color per point in the group. I don't know
> ahead of time what the list is.
> I am looking for a general approach to this within the lattice
> xyplot plot framework; the above is just an example.

The general approach is to write your own panel function. For a possible template, look at the functions panel.superpose and panel.superpose.2 and how they handle the 'type' argument.

Deepayan mailing list PLEASE do read the posting guide! Received on Wed Jul 05 04:28:24 2006

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