[R] searching several subsequences in a single string sequence

[Ivan Calandra]

Hi Marcelo,

Try this:
x <- "ABCABAABABABCAB"
length(gregexpr(pattern="ABC", x)[[1]])

See ?gregexpr for more details (though I admit that it is not easy to 
understand this help page)

HTH,
Ivan

Le 9/27/2011 18:51, Marcelo Araya a écrit :
> Hi all
>
>
>
> I am analyzing bird song element sequences. I would like to know how can I
> get how many times a given subsequence is found in single string sequence.
>
>
>
>
>
> For example:
>
>
>
> If I have this single sequence:
>
>
>
> ABCABAABABABCAB
>
>
>
> I am looking for the subsequence "ABC". Want I need to get here is that the
> subsequence is found twice.
>
>
>
> Any idea how can I do this?
>
>
>
> Thanks in advance
>
>
>
>
>
> Marcelo Araya-Salas
>
> Ph.D.  Student
>
> Avian Communication and Evolution Lab
>
> Department of Biology
>
> New Mexico State University
>
> Lab: 575-646-4863
>
>
>
>
> 	[[alternative HTML version deleted]]
>
> ______________________________________________
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

-- 
Ivan CALANDRA
PhD Student
University of Hamburg
Biozentrum Grindel und Zoologisches Museum
Dept. Mammalogy
Martin-Luther-King-Platz 3
D-20146 Hamburg, GERMANY
+49(0)40 42838 6231
ivan.calandra at uni-hamburg.de

**********
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