[R] square brackets in expression in plots

[Jannis]

Dears,


do you know whether it is possible to include any square parantheses (brackets) in an expression to use it as an axis label?

e.g. I would like to have a label like (with the sub and superscripts correct):

"speed [m s^-1]"

I know how to combine an expression with text via paste, but as I run soimething like:

a='m*s^{-1}'
plot(1:10,main=parse(text=a))

I found now way of doing this. I use the parse thing as I have all these units stored as strings that represent expressions.


Cheers for any help!

Jannis