Is there any way, after use of print.trellis(), to obtain the
co-ordinates of the plot region, e.g., in what are then the
native co-ordinates?
e.g.
library(DAAG)
library(lattice); library(grid)
data(cuckoos)
pushViewport(viewport(layout=grid.layout(2, 1)))
pushViewport(viewport(layout.pos.row=1))
cuckoos.strip <- stripplot(species ~ length, data=cuckoos)
print(cuckoos.strip, newpage=FALSE)
grid.text("A", x=unit(0.18,"native"), y=unit(0.925,"native"))
# This works, but is fiddly, and needs rejigging if width
# or fontsize are changed.
popViewport(1)
An alternative would of course be to access the co-ordinate
system used by the lattice function for locating the panels,
or for locating labelling.
As in the example above, I have been using grid.text() to
position text outside the plot region, but closer to the "top"
axis than the legend parameter to the lattice function will
allow.
John Maindonald email: [EMAIL PROTECTED]
phone : +61 2 (6125)3473 fax : +61 2(6125)5549
Centre for Bioinformation Science, Room 1194,
John Dedman Mathematical Sciences Building (Building 27)
Australian National University, Canberra ACT 0200.
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