[R] stupid regexp question

[servet ahmet çizmeli]

Hello,

I have a stupid regexp question. I have a large data frame of strings. I would
like to convert all occurences of :

"W.m^{-2}"

to

"W/m2"

I make the following test :

gsub(glob2rx("W.m^{-2}"), "W/m2", "W.m^{-2}")

but it does not seem to work. I don't know how to do it otherwise as I could
never learn how to deal with the special characters (like .^{}) in regexps.

Thanks from advance for your kindly help
servet