Question

How to extract every nth element of a vector using R

Answer 1

m <- 1:50
n<- m[seq(1, length(m), 6)]

The above piece of code will extract every 6th element from vector a starting from 1.

Comments

n<- m[seq(1, length(m)*2, 6)]

Does not remove the last one if it is not divisible by 6

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Hi, Why to make length(m) * 2? because it gives NA at positions after the actual length of the vector.