[R] position of a specific character

[Erik Iverson]

gregexpr("\\(", frg)


Hua Li wrote:
> 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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