[R] several boxplots or bwplots into one graphic

[Chuck Cleland]

   Your variables (var.*) seem to be on the same scale.  How about 
reshaping the data into a univariate layout and then using bwplot as 
follows:

mydata <- data.frame(ID = 1:20, A = runif(20), B = runif(20),
                      C = runif(20), GROUP = rep(c(0,1), c(10,10)))

mydata.uni <- reshape(mydata, varying = list(c("A", "B", "C")),
                       v.names = "Y", timevar = "VAR", times = c("A",
                       "B", "C"), direction = "long")

library(lattice)

bwplot(Y ~ as.factor(GROUP) | VAR, data = mydata.uni, layout=c(3,1,1),
        xlab="Group")

hope this helps,

Chuck Cleland

Christoph Lehmann wrote:
> Hi
> I have 10 variables and 2 groups. I know how to plot a bwplot for ONE 
> var. e.g.
> 
> var.a var.b var.c .. GROUP
> 0.2   0.5   0.2   .. 0
> 0.3   0.2   0.2   .. 0
> ..
> 0.1   0.8   0.7   .. 1
> 0.5   0.5   0.1   .. 1
> ..
> 
> 
> bwplot(var.a ~ GROUP, data = my.data)
> 
> How can I plot 10 bwplots (or boxplots) automatically into one graphic? 
> is there any function from lattice which can do this?
> 
> thanks for a short hint
> 
> christoph
> 
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-- 
Chuck Cleland, Ph.D.
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