[R] converting strings to expressions

[Richard M. Heiberger]

sapply(estr, FUN=function(x) parse(text=x))

and it does print the greek letter in the xlab.

xyplot(1:10 ~ 1:10,
       scales = list(x = list(at = c(3, 6),
                     labels = sapply(estr, FUN=function(x) parse(text=x)))))

Rich