[Rd] Using strwidth before plotting

[Duncan Murdoch]

In the plotcorr() function in the ellipse package, I want to position
things differently depending on the size of the labels.  I can use
strwidth to find out the length of the labels, but only when there's a
plot window open:  it won't open one.

Question:  What function call says:  make sure there's a window open
(i.e. do what plot() does before it starts plotting)?

I don't think I can use plot.new() or frame(), because I don' t want
to leave a blank page in the plot history if there was already a
window open.

Duncan Murdoch


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