splitting a vector of letters into vectors of equal size

Question

I have some fasta sequence which is made out of hundreds of thousand of letters "a" "g" "c" "t"

library(seqinr)
mydata<-read.fasta(file="sequence.fasta")
mydata1<-mydata[[1]]

I would like cut it into vectors of equal lengths of let's say size 100. Manually it would look something like

vec1<-mydata1[c(1:100)]
vec2<-mydata1[c(101:200)]

etc. I do not have access to any other coding program hence it must be done in r. I am thinking about a for loop of some kind but I don't know how to implement one. Is this task even possible in r?

EDIT: This question is not the same as the one highlighted because I don't have a numeric vector but DNA sequence made out of letters.

akrun · Accepted Answer · 2018-04-29T23:31:12.017

2

If we need to split by vectors of length 100

lst <- split(my.data, as.integer(gl(length(my.data), 100, length(my.data))))

edited Apr 29 '18 at 23:31

answered Apr 29 '18 at 14:40

akrun

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When I type your command it ends up with a "+" sign and nothing happens. I don't quite understand? – Patrick Apr 29 '18 at 15:23
@Patrick Sorry, it is because one of more closing bracket `)` is required. Can you try it now – akrun Apr 29 '18 at 23:31
1

Thank you very much, works like a charm! – Patrick Apr 30 '18 at 12:02

splitting a vector of letters into vectors of equal size

1 Answers1