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[matrix] Diff of /pkg/inst/doc/Introduction.Rnw
 [matrix] / pkg / inst / doc / Introduction.Rnw Diff of /pkg/inst/doc/Introduction.Rnw

revision 491, Wed Feb 2 19:40:26 2005 UTC revision 492, Thu Feb 3 14:24:03 2005 UTC
# Line 78  Line 78
78  dense matrices.  At present only the real classes have been  dense matrices.  At present only the real classes have been
79  implemented.  These classes are  implemented.  These classes are
80  \begin{description}  \begin{description}
81  \item[geMatrix] Real matrices in general storage mode  \item[dgeMatrix] Real matrices in general storage mode
82  \item[syMatrix] Symmetric real matrices in non-packed storage  \item[dsyMatrix] Symmetric real matrices in non-packed storage
83  \item[trMatrix] Triangular real matrices in non-packaged storage  \item[dtrMatrix] Triangular real matrices in non-packaged storage
84  \item[poMatrix] Positive semi-definite symmetric real matrices in  \item[dpoMatrix] Positive semi-definite symmetric real matrices in
85    non-package storage    non-package storage
86  \end{description}  \end{description}
87  Methods for these classes include coersion between these classes, when  Methods for these classes include coersion between these classes, when
# Line 115  Line 115
115  definition might be  definition might be
116  \begin{Schunk}  \begin{Schunk}
117  \begin{Sinput}  \begin{Sinput}
118  setClass("tripletMatrix",  setClass("dgTMatrix",
119           representation(i = "integer", j = "integer", x = "numeric",           representation(i = "integer", j = "integer", x = "numeric",
120                          Dim = "integer"))                          Dim = "integer"))
121  \end{Sinput}  \end{Sinput}
# Line 142  Line 142
142
143  The Matrix package provides the following classes for sparse matrices  The Matrix package provides the following classes for sparse matrices
144  \begin{description}  \begin{description}
145  \item[tripletMatrix] general, real, sparse matrices in (a possibly  \item[dgTMatrix] general, numeric, sparse matrices in (a possibly
146    redundant) triplet form.  This can be a convenient form in which to    redundant) triplet form.  This can be a convenient form in which to
147    construct sparse matrices.    construct sparse matrices.
148  \item[cscMatrix] general, real, sparse matrices in the (sorted) compressed  \item[dgCMatrix] general, numeric, sparse matrices in the (sorted) compressed
149    sparse column format.    sparse column format.
150  \item[sscMatrix] symmetric, real, sparse matrices in the (sorted)  \item[dsCMatrix] symmetric, real, sparse matrices in the (sorted)
151    compressed sparse column format.  Only the upper or the lower triangle is    compressed sparse column format.  Only the upper or the lower triangle is
152    stored.  Although there is provision for both forms, the lower    stored.  Although there is provision for both forms, the lower
153    triangle form works best with TAUCS.    triangle form works best with TAUCS.
154  \item[tscMatrix] triangular, real, sparse matrices in the (sorted)  \item[dtCMatrix] triangular, real, sparse matrices in the (sorted)
155    compressed sparse column format.    compressed sparse column format.
156  \end{description}  \end{description}
157

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