[R] Extracting Sequence Data from a Vector
Eric Vander Wal
eric.vanderwal at usask.ca
Wed Jun 10 19:28:09 CEST 2009
Thanks in advance.
I have a vector of numbers which contain sections that are sequences
which increase by a value of 1 followed by a gap in the data and then
another sequence occurs, etc:
x<-c(1:3, 6: 7, 10:13)
From the vector I need to extract 2 items of information A) the first
number in the sequence (e.g., 1, 6, 10) and B) how many observations
were in each sequence section (e.g., 3, 2, 4).
v1 v2
1 3
6 2
10 4
It seems simple, but my R skills are still in their infancy so I very
much appreciate the help.
Eric
--
Eric Vander Wal
Ph.D. Candidate
University of Saskatchewan, Department of Biology,
112 Science Place, Saskatoon, SK., S7N 5E2
"Pluralitas non est ponenda sine neccesitate"
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