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nvec
the sequence seq_len(nvec[i])
is created. These are concatenated and the result returned.
sequence(nvec)
sequence
used to work for 0 or negative inputs as
seq(x) == 1:x
. Note that sequence <- function(nvec) unlist(lapply(nvec, seq_len))
and it mainly exists in reverence to the very early history of R.
gl
, seq
, rep
.
sequence(c(3, 2)) # the concatenated sequences 1:3 and 1:2.
#> [1] 1 2 3 1 2
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