[R] one legend for multiple plots

[Uwe Ligges]

Lucy Crooks wrote:

> Does anyone know how to make one legend above the plots drawn using  
> par(mfrow=c(1,2)), ie in the margin?
> All I've managed is to put a legend inside the plot region of one  
> graph. Although I could write text in the margin I don't know how to  
> draw lines in the margin if I were to construct the legend from scratch.

You can simply use legend, but specify par(xpd=TRUE) before...

Uwe Ligges

> Thanks for any help.
> 
> 
> Lucy Crooks
> Theoretical Biology
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