[R] text and expressions in labels

[Paul Murrell]

Hi


> I'm a novice at R and I'm having difficulty combining text and an
> expression in the same label.
> 
>   I just trying to get Yield (kg ha-1) and have the -1 as superscript. What
>   I came up with doesn't work. I'm stuck at trying to concatenate it with
> any other regular text.
> 
>   yield1 = "Yield (kg ha"
>   yield2 = expression(^-1)
>   yield3 = ")"
>   ylabel = paste(yield1, yield2, yield3)
> 
>   boxplot(yield.kgha.st~env,data=lsmeans1,
>   boxwex=0.3,
>   main='Chinese Hybrids',
>   ylim=c(0,5300),
>   sub='',
>   ylab=ylabel,
>   xlab='')
> 
> any help appreciated,


The following is one way to do what I think you want ...

	plot(1:10, ylab=expression(paste("Yield (kg ", ha^-1, ")")))

Paul
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