https://github.com/cran/Matrix
Tip revision: dd89e596a74b5769a7d2d22a640f42e4ca8359be authored by Doug and Martin on 20 January 2009, 00:00:00 UTC
version 0.999375-18
version 0.999375-18
Tip revision: dd89e59
RsparseMatrix-class.Rd
\name{RsparseMatrix-class}
\docType{class}
\alias{RsparseMatrix-class}
%
\alias{coerce,RsparseMatrix,CsparseMatrix-method}
\alias{coerce,RsparseMatrix,TsparseMatrix-method}
\alias{coerce,RsparseMatrix,denseMatrix-method}
\alias{coerce,RsparseMatrix,dgeMatrix-method}
\alias{coerce,RsparseMatrix,generalMatrix-method}
\alias{coerce,RsparseMatrix,matrix-method}
\alias{coerce,RsparseMatrix,dsparseMatrix-method}
\alias{coerce,RsparseMatrix,lsparseMatrix-method}
\alias{coerce,RsparseMatrix,nsparseMatrix-method}
\alias{coerce,RsparseMatrix,dMatrix-method}
\alias{coerce,RsparseMatrix,lMatrix-method}
\alias{coerce,RsparseMatrix,nMatrix-method}
\alias{coerce,matrix,RsparseMatrix-method}
\alias{coerce,denseMatrix,RsparseMatrix-method}
\alias{coerce,sparseMatrix,RsparseMatrix-method}
% all other ..RMatrix coercions -- here as well for now --
\alias{coerce,matrix,dgRMatrix-method}
%
\alias{t,RsparseMatrix-method}
%
\title{Class "RsparseMatrix" of Sparse Matrices in Column-compressed Form}
\description{The \code{"RsparseMatrix"} class is the virtual class of
all sparse matrices coded in sorted compressed row-oriented form.
Since it is a virtual class, no objects may be created from it. See
\code{showClass("RsparseMatrix")} for its subclasses.
}
\section{Slots}{
\describe{
\item{\code{j}:}{Object of class \code{"integer"} of length \code{nnzero}
(number of non-zero elements). These are the row numbers for
each non-zero element in the matrix.}
\item{\code{p}:}{Object of class \code{"integer"} of pointers, one
for each row, to the initial (zero-based) index of elements in
the row.}
\item{\code{Dim}, \code{Dimnames}:}{inherited from
the superclass, see \code{\linkS4class{sparseMatrix}}.}
}
}
\section{Extends}{
Class \code{"sparseMatrix"}, directly.
Class \code{"Matrix"}, by class \code{"sparseMatrix"}.
}
\section{Methods}{
Only \bold{few} methods are defined currently on purpose, since we
rather use the \code{\linkS4class{CsparseMatrix}} in \pkg{Matrix}.
Recently, more methods were added but \emph{beware} that these
typically do \emph{not} return \code{"RsparseMatrix"} results, but
rather Csparse* or Tsparse* ones.
\describe{
\item{t}{\code{signature(x = "RsparseMatrix")}: ... }
\item{coerce}{\code{signature(from = "RsparseMatrix", to = "CsparseMatrix")}: ... }
\item{coerce}{\code{signature(from = "RsparseMatrix", to = "TsparseMatrix")}: ... }
}
}
\seealso{
its superclass, \code{\linkS4class{sparseMatrix}}, and, e.g., class
\code{\linkS4class{dgRMatrix}} for the links to other classes.
}
\examples{
showClass("RsparseMatrix")
}
\keyword{classes}