R help - Apr 2007 - Expression for pedices

I know that this maybe a trivial question. I am not able to plot pedices in
graph axes.
Instead I am able to plot different math symbols :

XLABEL <- expression(paste(cmH,lim(f(x), x %->% 0),"O PEEP"))
works well

XLABEL <- expression(paste(cmH,[2],"O PEEP"))
is considered a wrong expression.

Thanks

On 4/15/2007 2:05 PM, Cressoni, Massimo (NIH/NHLBI) [F]
wrote:
> I know that this maybe a trivial question. I am not able to plot pedices in
graph axes.
> Instead I am able to plot different math symbols :
I think you mean subscripts.
> 
> XLABEL <- expression(paste(cmH,lim(f(x), x %->% 0),"O
PEEP"))
> works well
> 
> XLABEL <- expression(paste(cmH,[2],"O PEEP"))
> is considered a wrong expression.
Yes, you don't want the comma before the bracket:

XLABEL <- expression(paste(cmH[2],"O PEEP"))

Duncan Murdoch