SCM Repository

[matrix] View of /pkg/man/dCholCMatrix-class.Rd
ViewVC logotype

View of /pkg/man/dCholCMatrix-class.Rd

Parent Directory Parent Directory | Revision Log Revision Log

Revision 476 - (download) (as text) (annotate)
Wed Feb 2 11:51:24 2005 UTC (14 years, 9 months ago) by bates
Original Path: pkg/man/sscChol-class.Rd
File size: 2511 byte(s)
Change name of slot from factorization to factors
\title{Cholesky decompositions of sscMatrix objects}
\description{The class of Cholesky decompositions of symmetric, sparse
  column matrices from the \code{"sscMatrix"} class.}
\section{Objects from the Class}{
Objects can be created by calls of the form \code{new("sscChol", ...)}
but are more commonly created from \code{chol} applied to an
\code{sscMatrix} object.
    \item{\code{perm}:}{Object of class \code{"integer"} giving the
      permutation of the rows and columns chosen to minimize fill-in.
      If pivoting has not been applied this will be an integer vector of
      length 0.}
    \item{\code{diag}:}{A character object indicating if the triangular
      matrix is unit triangular or not.  This slot is inherited from the
      \code{"tscMatrix"} class.  It is always \code{"N"} for this class.}
    \item{\code{uplo}:}{A character object indicating if the upper
      triangle (\code{"U"} or \code{"u"}) or the lower triangle
      (\code{"L"} or \code{"l"}) is stored.  At present only the lower
      triangle form is allowed.}
    \item{\code{p}:}{Object of class \code{"integer"} of pointers, one
      for each column, to the initial (zero-based) index of elements in
      the column.}
    \item{\code{i}:}{Object of class \code{"integer"} of length nnzero
      (number of non-zero elements).  These are the row numbers for
      each non-zero element in the matrix.}
    \item{\code{x}:}{Object of class \code{"numeric"} - the non-zero
      elements of the matrix.}
    \item{\code{factors}:}{Object of class \code{"list"} - a list
      of factorizations of the matrix. }
    \item{\code{Dim}:}{Object of class \code{"integer"} - the dimensions
     of the matrix - must be an integer vector with exactly two
     non-negative values.}
    \item{\code{D}:}{Object of class \code{"numeric"} - the diagonal
      elements of the matrix D in the LDL' decomposition.}
    \item{\code{Parent}:}{Object of class \code{"integer"} - the
      elimination tree of the (possibly permuted) symmetric matrix.}
Class \code{"tscMatrix"}, directly.
Class \code{"cscMatrix"}, by class \code{"tscMatrix"}.
No methods defined with class "sscChol" in the signature.
xpx = crossprod(mm)
ViewVC Help
Powered by ViewVC 1.0.0  
Thanks to:
Vienna University of Economics and Business Powered By FusionForge