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vector which is stored with additional \link{attributes} giving the
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vector which is stored with additional \link{attributes} giving the
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dimensions (attribute \code{"dim"}) and optionally names for those
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dimensions (attribute \code{"dim"}) and optionally names for those
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dimensions (attribute \code{"dimnames"}).
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dimensions (attribute \code{"dimnames"}).
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A two-dimensional array is the same thing as a \code{\link{matrix}}.
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A two-dimensional array is the same thing as a \code{\link{matrix}}.
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One-dimensional arrays often look like vectors, but may be handled
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One-dimensional arrays often look like vectors, but may be handled
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differently by some functions: \code{\link{str}} does distinguish
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differently by some functions: \code{\link{str}} does distinguish
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them in recent versions of \R.
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them in recent versions of \R.
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The \code{"dim"} attribute is an integer vector of length one or more
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The \code{"dim"} attribute is an integer vector of length one or more
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the length of the array.
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the length of the array.
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The \code{"dimnames"} attribute is optional: if present it is a list
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The \code{"dimnames"} attribute is optional: if present it is a list
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with one component for each dimension, either \code{NULL} or a
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with one component for each dimension, either \code{NULL} or a
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character vector of the length given by the element of the
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character vector of the length given by the element of the
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\code{"dim"} attribute for that dimension.
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\code{"dim"} attribute for that dimension.
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\code{is.array} is a \link{primitive} function.
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\code{is.array} is a \link{primitive} function.
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}
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}
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\value{
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\value{
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\code{array} returns an array with the extents specified in \code{dim}
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\code{array} returns an array with the extents specified in \code{dim}
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and naming information in \code{dimnames}. The values in \code{data} are
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and naming information in \code{dimnames}. The values in \code{data} are
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