[Rd] persp greek label problem (PR#583)

[ramin.nakisa@ncr.com]

Full_Name: Ramin Nakisa
Version: 1.1.0
OS: i386 linux
Submission from: (NULL) (192.127.94.7)


Labels created with expression seem to disappear, e.g. the x axis label in

x <- -6:16
contour(outer(x, x), method = "edge", vfont = c("sans serif", "plain"),
xlab=expression(theta[0]), ylab=expression(theta[1]))

and all three labels in

x <- -6:16
persp(outer(x, x), xlab=expression(theta[0]), ylab=expression(theta[1]),
zlab=expression(theta[2]), ticktype="detailed")


Is this just a clipping problem, with a large bounding box for expression=...?

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