[R] barplot as Trellis graphic

[hadley wickham]

On Fri, Mar 28, 2008 at 1:42 AM, Agustin Lobo <Agustin.Lobo at ija.csic.es> wrote:
> Thanks for your detailed explanation.
>  You are right, a set of boxplots done with bwplot
>  is a much better graphic for this type of data:
>
>  bwplot(V1~VAR|f,data=datos2)
>
>  This was not a good example. The barplot would be suited
>  for counts, ie. species composition:
>  datos4 <-
>  data.frame(V1=round(runif(200,1,5)),SITE=factor(round(runif(200,1,3))))

The bar plot in ggplot2 (http://had.co.nz/ggplot2) automatically
aggregates your data:

install.packages("ggplot2")
library(ggplot2)

qplot(factor(V1), data=datos4, geom="bar", facets = . ~ SITE)


> Is there an R guide to Trellis graphics?

How about http://www.amazon.com/dp/0387759689 ?

Hadley

-- 
http://had.co.nz/