[R] bwplot panels like stripplot

[Waichler, Scott R]

>> I would like to plot horizontal box-and-whisker plots in lattice
where 
>> each factor has its own panel and scales are "free."  Below is a 
>> stripplot version of what I have in mind.  Substituting "bwplot" 
>> doesn't work. 

> This won't work (easily) with R <= 1.9.1. Try with 2.0.0 beta, and let
us know if you still have problems.
>
> Deepayan 

It still doesn't work.  Once again,

> R.version.string
[1] "R version 2.0.0, 2004-09-24"

x <- c(runif(100, 0, 1), runif(100, 1, 2), runif(100, 2, 3)) 
y <- c(rep("First", 100), rep("Second", 100), rep("Third", 100)) 

# this works fine
stripplot(x | y,
          layout=c(1,3),
          scales=list(relation="free"),
          as.table=T,
          bg="white"
         )

# this doesn't
bwplot(x ~ y,
       layout=c(1,3),
       scales=list(relation="free"),
       as.table=T,
       bg="white",
       horizontal=T
      )

Error in Ops.unit(do.call("max", lab.unit), tick.unit) :
        Both operands must be units
In addition: Warning messages:
1: x should be numeric in: bwplot(x ~ y, layout = c(1, 3), scales =
list(relation = "free"),
2: no finite arguments to max; returning -Inf


Scott