# sequence

From base v3.3
by R-core R-core@R-project.org

##### Create A Vector of Sequences

For each element of `nvec`

the sequence `seq_len(nvec[i])`

is created. These are concatenated and the result returned.

- Keywords
- manip

##### Usage

`sequence(nvec)`

##### Arguments

- nvec
- a non-negative integer vector each element of which specifies the end point of a sequence.

##### Details

Earlier versions of `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.

##### See Also

##### Examples

`library(base)`

```
sequence(c(3, 2)) # the concatenated sequences 1:3 and 1:2.
#> [1] 1 2 3 1 2
```

*Documentation reproduced from package base, version 3.3, License: Part of R @VERSION@*

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