[R] bwplot: how to get plotmath labels?

[David Winsemius]

On Mar 26, 2011, at 4:47 AM, Marius Hofert wrote:

> Dear expeRts,
>
> How can I get plotmath-labels in the bwplot below?
> As you can see, I couldn't manage to pass the expressions through  
> the dimnames
> argument.

It would have been helpful, and may still be necessary, for you to  
explain more fully what you were attempting to do. See if this effort  
was informative.

> Marius
>
> library(lattice)
>
> ## data
> dim <- c(100, 6, 2, 3)

# did not find the dimnames object useful
# at least to the extent I understood the question

> data <- rexp(prod(dim))
> arr <- array(data=data, dim=dim, dimnames=dimnames)
> z <- abs(sweep(arr, 3, 1))
> df <- as.data.frame.table(z, responseName="error")
>
> ## box plot
> bwplot(error ~ methods | attr * groups, data=df,
>       as.table=TRUE, outer=FALSE, strip=TRUE, notch=TRUE,
>       scales=list(alternating=c(1,1), tck=c(1,0)))

  bwplot(error ~ methods | attr * groups, data=df,
       as.table=TRUE, outer=FALSE, strip=TRUE, notch=TRUE,
       scales=list(y=list(alternating=TRUE,
                           tck=c(1,0)),
                   x=list(labels=c( expression(method == 1),  
expression(alpha == 1)) )
         )         )



David Winsemius, MD
West Hartford, CT