I would like to centre titles for pairs of plots in a 3-x-2 array. Each row of the array corresponds to a calendar year and I would like to have the year value centred between the two plots in the row, and just above their upper edges.
I have attached an example in "demo.pdf" showing roughly
what I want. I managed to produce the example using
mtext(outer=TRUE,side=3,line=<whatever>,text=YR,font=2)
I got the appropriate (negative) values for "line" by trial-and-error
experimentation. That's pretty kludgy, and the result only works for
the screen graphics device with which I experimented. If I switch to pdf()
everything is out of whack. I produced demo.pdf by plotting to the screen
graphics device and then using dev.copy().
Is there a non-kludgy way of accomplishing my objective?
Thanks.
cheers,
Rolf Turner
demo.pdf
Description: Adobe PDF document
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