[R] text in graph with expression

[Uwe Ligges]

Benoit Boulinguiez wrote:
> Hi all,
>  
> I'm using 'expression' in the axes labels in graphs to get the greek letters
> (ylab), as follows:
>  
> plot(
>  layer_1$U0
>  ,layer_1$dP/(H1.Theo)
>  #,ylim=c(0,100)
>  ,xlim=c(0,1.1)
>  #,main="Pressure Drop",
>  ,xlab=expression(U[0]~(Nm/s))
>  ,ylab=expression(Delta~P~(Pa/m))
>  ,col=2
>  ,pch=16
>  ,cex=1.5)
>  
> I just need to know how to avoid the use of a space (~) between the greek
> letter (Delta) and the rest of the text.

Use "*", see ?plotmath

Uwe Ligges




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> 
> Regards/Cordialement
> 
> -------------
> Benoit Boulinguiez
> Ph.D student
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