[R] R: expression

[Uwe Ligges]

Clark Allan wrote:

> hi all
> 
> i am having a problem with the expression/paste command
> 
> say we estimate a variable, named PHI
> 
> it contains the value of say 2
> 
> and we want to display this value as " hat(phi) = PHI" onto a graphic
> 
> i.e.	 " hat(phi)=2 "
> 
> how does one do this?
> 
> i've tried the following:
> 
> 1.	legend(-5,.3,expression(hat(phi)*"="*PHI))
> 
> 2.	legend(-5,.3,paste(expression(phi),"=",PHI))


See ?plotmath or the Help Desk Article "Automation of Mathematical 
Annotation in Plots" in R News 2 (3), 32-34.

     legend(-5, .3, substitute(hat(phi) == PHI, list(PHI = PHI)))

Uwe Ligges


> but they do not work.
> 
> any help?
> 
> /
> allan
> 
> 
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