On 11/10/2010 11:31 AM, Rolf Turner wrote:
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?
Hi Rolf,
The getFigCtr function might also be helpful. It allows you to get any
position within the figure region in user units. You would probably want
to call:
getFigCtr(pos=c(0,0.9))
to place your title after drawing the right side plot in each row if I
read your example correctly.
Jim
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