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            length.out = NULL, along.with = NULL, ...)
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            length.out = NULL, along.with = NULL, ...)
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}
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}
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\usage{
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\usage{
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from:to
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from:to
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   a:b
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   a:b
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seq(from, to)
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seq(from, to)
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seq(from, to, by=)
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seq(from, to, by=)
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seq(from, to, length=)
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seq(from, to, length=)
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seq(along)
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seq(along=)
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seq(from)
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}
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}
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\arguments{
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\arguments{
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  \item{from}{starting value of sequence.}
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  \item{from}{starting value of sequence.}
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  \item{to}{(maximal) end value of the sequence.}
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  \item{to}{(maximal) end value of the sequence.}
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  \item{by}{increment of the sequence.}
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  \item{by}{increment of the sequence.}
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  arguments when programming.
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  arguments when programming.
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  Function \code{seq} is generic, and only the default method is
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  Function \code{seq} is generic, and only the default method is
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  described here.
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  described here.
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  The operator \code{:} and the first \code{seq(.)} form generate the
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  The operator \code{:} and the \code{seq(from, to)} form generate the
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  sequence \code{from, from+1}, \ldots, \code{to}.
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  sequence \code{from, from+1, \dots, to}.
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  The second form generates \code{from, from+by}, \ldots, \code{to}.
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  The second form generates \code{from, from+by}, \ldots, up to the
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  sequence value less than or equal to \code{to}.
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  The third generates a sequence of \code{length} equally spaced values
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  The third generates a sequence of \code{length} equally spaced values
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  from \code{from} to \code{to}.
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  from \code{from} to \code{to}.
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  The fourth form generates the sequence \code{1, 2, \dots, length(along)}.
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  The last generates the sequence \code{1, 2}, \ldots,
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  The last generates the sequence \code{1, 2, \dots, length(from)}
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  (as if argument \code{along} had been specified),
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  \code{length(along)}, unless the argument is of length 1 when it is
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  \emph{unless} the argument is numeric of length 1 when it is
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  interpreted as a \code{length} argument.
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  interpreted as \code{1:from} (even for \code{seq(0)} for
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  compatibility with S).
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  If \code{from} and \code{to} are factors of the same length, then
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  If \code{from} and \code{to} are factors of the same length, then
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  \code{from : to} returns the \dQuote{cross} of the two.
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  \code{from : to} returns the \dQuote{cross} of the two.
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  Very small sequences (with \code{from - to} of the order of \eqn{10^{-14}}
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  Very small sequences (with \code{from - to} of the order of \eqn{10^{-14}}