Hannes,

A bit inelegant, but it works.  Try this:
mtext("Overall Title Row 2", outer=TRUE, line=-17) 
mtext("Overall Title Row 3", outer=TRUE, line=-34) 

Jean


capy_bara <hettling@few.vu.nl> wrote on 10/23/2012 09:08:39 AM:
> 
> Dear all,
> I have a 3x2 plot and in addition to the title of the individual plots I
> would like to have an overall title
> for each row.  I managed to get an overall title for the whole plot 
matrix
> with mtext:
> 
> par(mfrow=(c(3,2)), mar=c(6.4,4.5,4.2, 1.8), oma=c(0,0,3,0))
> for (i in 1:6)
>   barplot(sample(1:10,5), main=paste("Plot #",i))
> mtext("Overall Title Row 1", outer=TRUE)
> 
> but I  cannot put an overall title in the middle above the titles of the
> plots in the second or third row. 
> If I use mtext within the loop, I can only add another title above an
> individual plot.
> 
> I hope someone can help me, many thanks in advance
> 
> Hannes

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