[R] Number of occurences of a character in a string

[Christian Raschke]

 > length(gregexpr(";", b)[[1]])
[1] 5


This works as long as the substrings you are searching for don't overlap.

Christian



On 10/10/2010 11:18 PM, Santosh Srinivas wrote:
> New to R ... which is a function to most effectively search the number of occurrences of a character in a string?
>
> b<- c("jkhrikujhj345hi5hiklfjsdkljfksdio324j';;'lfd;g'lkfit34'5;435l;43'5k")
>
> I want the number of semi-colons ";" in b?
>
> Thanks.
>
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-- 
Christian Raschke
Department of Economics
and
ISDS Research Lab (HSRG)
Louisiana State University
Patrick Taylor Hall, Rm 2128
Baton Rouge, LA 70803
crasch2 at lsu.edu