Thanks – that’s the most helpful solution – it’s important for code to 
be neat too and that is fairly neat if unintuitive!  I had tried bquote a bit, 
but hadn’t figured it out properly.

 

Cheers!

 

Paul

 

From: Henrique Dallazuanna [via R] 
[mailto:ml-node+1289286-317759...@n4.nabble.com] 
Sent: 25 January 2010 12:21
To: Paul Chatfield
Subject: Re: [R] Paste expression in graph title

 

Try this: 

plot(x, y, main = bquote(R^2 == .(round(summary(lm(y ~ x))$r.squared, 3)))) 


On Mon, Jan 25, 2010 at 10:06 AM, Paul Chatfield 
<[hidden email] 
<http://n4.nabble.com/user/SendEmail.jtp?type=node&node=1289286&i=0> > wrote: 


> 
> This was my initial attempt at creating a title on a graph of the R squared 
> value: 
> 
> x<-rnorm(10) 
> y<-rnorm(10) 
> plot(x,y, main=paste(expression(R^2)," = ",round(summary(lm(y~ 
> x))$r.squared, digits=3), sep="")) 
> 
> I've read various other posts that say expression needs to be taken outside 
> the paste, but I can't seem to get it work as the following fails 
> 
> plot(x,y, main=expression(paste("R^2"," = ",round(summary(lm(y~ 
> x))$r.squared, digits=3), sep=""))) 
> 
> I tried it with title() and didn't get much further either. 
> 
> Hmmm, any ideas what am I missing? 
> 
> Thanks 
> 
> Paul 
> -- 
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-- 
Henrique Dallazuanna 
Curitiba-Paraná-Brasil 
25° 25' 40" S 49° 16' 22" O 

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