[R] One main caption for an mfrow=c(2,1) plot window

[Alexander Engelhardt]

Am 30.05.2011 10:39, schrieb Uwe Ligges:
>
>
> On 29.05.2011 22:52, Alexander Engelhardt wrote:
>> Hello,
>> I'm trying to plot a series of pages in a pdf with one main caption for
>> each page.
>> Each page should then have two plots in one row, preferably with an own
>> caption.
>> I can't plot the main caption in a window, and subsequently plot the two
>> graphics (next to each other) below it.
>>
>> Here is what I've tried. This one almost does the job, but when plotting
>> the two graphics, R generates a new pdf page.
>> The 3 commented lines were another approach I tried but didn't work out.
>> The split.screen() erases what was previously drawn on the device (which
>> is the main caption in my case):
>>
>> x <- 1:10
>> y <- 10:1
>> pdf("sandbox.pdf", width=6.5, height=3)
>
> forget the rest and use outer margins as in:
>
> par(mfrow = c(1, 2), oma = c(0, 0, 2, 0))
> for(i in 1:3){
> plot(x)
> plot(y)
> title(outer = "derp")
> }
>
> dev.off()

Wow. It's always just a one-liner.
Thanks a lot!
  -- Alex