[R] position of a specific character

From: Hua Li <hualihua_at_yahoo.com>
Date: Mon, 14 Jul 2008 15:57:36 -0700 (PDT)


Hi All,

I'm wondering whether there is a quick way to know the position of a specific charcater in a long character:

for example

frg="((D:41.04,I:41.04):45.05,(((E:2.32,((G:0.67,J:0.67):0.44,H:1.11):1.21)"

and I would like to know that the 1st, 2nd, 26th, 27th, 28th ... character is "(", is there a quick way to do that?

Thanks!

Hua



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