[R] Re-ordering the order of lattice graphics panels

[Jun Yan]

Factor levels may be specified by argument levels in function factor. The
following is an illustration:

> dat <- data.frame(x=rnorm(12), y=rnorm(12), group=rep(c("Artemia
larvae", "Abalone larvae", "Abalone spat"), 4))
> dat$group <- factor(dat$group, levels=c("Abalone spat","Abalone
larvae", "Artemia larvae"))
> bwplot(y ~ x | group, data=dat, layout=c(1,3))

Jun

On Wed, 25 Sep 2002, Smit,
A, Albertus, Dr wrote:

> Dear all
> 
> I have made some lattice graphs (bwplot(dead ~ treat | group,...). 
> 'group' is a factor with three levels (Artemia larvae, Abalone larvae 
> and Abalone spat), and the result is a graph with three panels 
> corresponding to the levels in 'group', ordered in alphabetical order 
> from bottom to top, as expected.
> 
> How does one re-order the order in which the levels of 'group' in the 
> graph? I want Abalone spat at the bottom, followed by Abalone larvae, 
> and Artemia larvae at the top. I have read most of the help on 
> bwplots, panel.functions etc., but I am sure there is something 
> obvious and simple I have missed.
> 
> Any help appreciated.
> 
> Albertus
> 
> 
> 
> 
> Dr. Albertus J. Smit
> Department of Botany
> University of Cape Town
> Private Bag Rondebosch
> 7700
> South Africa
> Tel. +27 21 689 3032
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