[R] bwplot: how to get plotmath labels?

[Marius Hofert]

Dear David,

many thanks, that was it.

Cheers,

Marius

On 2011-03-26, at 18:04 , David Winsemius wrote:

> 
> 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
>