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
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--
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.calan...@uni-hamburg.de
**********
http://www.for771.uni-bonn.de
http://webapp5.rrz.uni-hamburg.de/mammals/eng/1525_8_1.php
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