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\name{methods.sparse3Darray}
\Rdversion{1.1}
\alias{methods.sparse3Darray} %DoNotExport
\alias{anyNA.sparse3Darray}
\alias{dim.sparse3Darray}
\alias{dim<-.sparse3Darray}
\alias{dimnames.sparse3Darray}
\alias{dimnames<-.sparse3Darray}
\alias{print.sparse3Darray}
\title{
Methods for Sparse Three-Dimensional Arrays
}
\description{
Methods for the class \code{"sparse3Darray"}
of sparse three-dimensional arrays.
}
\usage{
\method{anyNA}{sparse3Darray}(x, recursive = FALSE)
\method{dim}{sparse3Darray}(x)
\method{dim}{sparse3Darray}(x) <- value
\method{dimnames}{sparse3Darray}(x)
\method{dimnames}{sparse3Darray}(x) <- value
\method{print}{sparse3Darray}(x, \dots)
}
\arguments{
\item{x}{
A sparse three-dimensional array (object of class \code{"sparse3Darray"}).
}
\item{value}{
Replacement value (see Details).
}
\item{recursive,\dots}{
Ignored.
}
}
\details{
These are methods for the generics
\code{\link[base]{anyNA}},
\code{\link[base]{dim}},
\code{\link[base]{dim<-}},
\code{\link[base]{dimnames}},
\code{\link[base]{dimnames<-}}
and \code{\link[base]{print}}
for the class \code{"sparse#Darray"} of sparse three-dimensional
arrays.
For \code{dimnames(x) <- value}, the \code{value} should either be
\code{NULL}, or a list of length 3 containing character vectors giving
the names of the margins.
For \code{dim(x) <- value}, the \code{value} should be an integer
vector of length 3 giving the new dimensions of the array. Note that this
operation does not change the array positions of the non-zero entries
(unlike \code{dim(x) <- value} for a full array). An error occurs if
some of the non-zero entries would lie outside the new extent of the array.
}
\value{
\code{anyNA} returns a single logical value.
\code{dim} returns an integer vector of length 3.
\code{dimnames} returns \code{NULL}, or a list of length 3
whose entries are character vectors.
\code{dim<-} and \code{dimnames<-} return a sparse 3D array.
\code{print} returns \code{NULL}, invisibly.
}
\author{
\spatstatAuthors.
}
\seealso{
\code{\link{sparse3Darray}}
}
\examples{
M <- sparse3Darray(i=1:4, j=sample(1:4, replace=TRUE),
k=c(1,2,1,2), x=1:4, dims=c(5,5,2))
anyNA(M)
dim(M)
dimnames(M)
dimnames(M) <- list(letters[1:5], LETTERS[1:5], c("Yes", "No"))
print(M)
}
\keyword{array}
\keyword{manip}
\concept{sparse}
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