Identifying sequences

Something like this?

a=1:10
b=20:30
c=40:50
x=c(a,b,c)
borders <- which(diff(x) != 1)
seqs <- data.frame(start = c(1, borders + 1), end = c(borders, length(x)))

Best regards,

Thierry
-----Oorspronkelijk bericht-----
Van: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
Namens christiaan pauw
Verzonden: woensdag 1 juni 2011 12:27
Aan: r-help at r-project.org
Onderwerp: [R] Identifying sequences

Hallo Everybody

Consider the following vector

a=1:10
b=20:30
c=40:50
x=c(a,b,c)

I need a function that can tell me that there are three set of continuos
sequences and that the first is from 1:10, the second from 20:30 and the third
from 40:50. In other words: a,b, and c.

regards
Christiaan

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Identifying sequences

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