| % File src/library/base/man/sequence.Rd |
| % Part of the R package, https://www.R-project.org |
| % Copyright 1995-2007 R Core Team |
| % Distributed under GPL 2 or later |
| |
| \name{sequence} |
| \title{Create A Vector of Sequences} |
| \usage{ |
| sequence(nvec) |
| } |
| \alias{sequence} |
| \arguments{ |
| \item{nvec}{a non-negative integer vector each element of which |
| specifies the end point of a sequence.} |
| } |
| \description{ |
| For each element of \code{nvec} the sequence \code{\link{seq_len}(nvec[i])} |
| is created. These are concatenated and the result returned. |
| } |
| \details{ |
| Earlier versions of \code{sequence} used to work for 0 or negative inputs as |
| \code{seq(x) == 1:x}. |
| |
| Note that \code{sequence <- function(nvec) unlist(lapply(nvec, seq_len))} |
| and it mainly exists in reverence to the very early history of \R. |
| } |
| \seealso{ |
| \code{\link{gl}}, \code{\link{seq}}, \code{\link{rep}}. |
| } |
| \examples{ |
| sequence(c(3, 2)) # the concatenated sequences 1:3 and 1:2. |
| #> [1] 1 2 3 1 2 |
| } |
| \keyword{manip} |