[R] How to produce a macron symbol (overline / overbar) on a plot

[Vladimir Eremeev]

xlab=expression(bar(temp))
or
xlab=expression(bar(" temp")) 

The overbar looks like it begins above "e" in the first case.

See demo(plotmath).


Jason Horn wrote:
> 
> Can anyone tell me how to produce a macron (or overbar or overline)  
> symbol on an R plot.  I have an axis that is labeled "temp", but I  
> need the overbar symbol over the entire word.
> 

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