On 2010-11-30 09:40, smj_115 wrote:
Hi I have created a set of 4 barplots using mfrow=c(2,2) and need to add a heading that spans the margin of the bottom 2 graphs. I have used locator(1) to find the coordinates but I dont seem to be able to add text anywhere on this multiplot. I would be really grateful if anyone could tell me if there is a simple method of achieving this.
You probably want to look at ?mtext and especially its arguments 'outer', 'side', 'adj' and 'line'. But make sure that there's enough space in the margin with par(oma = c(....)). Peter Ehlers
Many thanks Sam Jones
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