[R] Mixed font in lattice xyplot lables

[Andrewjohnclose]

Hi all, can anyone suggest a reason as mto why my xlab is plotting this text
at oposite ends of axis. I would like to represent my lable like this:
Moran's I ...but with the I in italics. For some reason they seperate and
position at oposite ends of the axis??

Thank you

library(lattice)
dat <- data.frame(x = rnorm(10),y = rnorm(10))
xyplot(y ~ x, dat,xlab=expression("Moran's ",italic("I")))
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