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revision 481, Wed Feb 2 15:01:50 2005 UTC revision 891, Fri Sep 2 13:39:57 2005 UTC
# Line 1  Line 1 
1  \name{dsyMatrix-class}  \name{dsyMatrix-class}
2  \docType{class}  \docType{class}
3  \alias{\%*\%,dgeMatrix,dsyMatrix-method}  \alias{\%*\%,dgeMatrix,dsyMatrix-method}
4    \alias{\%*\%,dspMatrix,dgeMatrix-method}
5    \alias{\%*\%,dspMatrix,integer-method}
6    \alias{\%*\%,dspMatrix,matrix-method}
7    \alias{\%*\%,dspMatrix,numeric-method}
8  \alias{\%*\%,dsyMatrix,dgeMatrix-method}  \alias{\%*\%,dsyMatrix,dgeMatrix-method}
9  \alias{dsyMatrix-class}  \alias{coerce,dspMatrix,dgeMatrix-method}
10    \alias{coerce,dspMatrix,dsyMatrix-method}
11    \alias{coerce,dspMatrix,matrix-method}
12  \alias{coerce,dsyMatrix,dgeMatrix-method}  \alias{coerce,dsyMatrix,dgeMatrix-method}
13    \alias{coerce,dsyMatrix,dspMatrix-method}
14  \alias{coerce,dsyMatrix,matrix-method}  \alias{coerce,dsyMatrix,matrix-method}
15    \alias{dspMatrix-class}
16    \alias{dsyMatrix-class}
17    \alias{norm,dspMatrix,character-method}
18    \alias{norm,dspMatrix,missing-method}
19  \alias{norm,dsyMatrix,character-method}  \alias{norm,dsyMatrix,character-method}
20  \alias{norm,dsyMatrix,missing-method}  \alias{norm,dsyMatrix,missing-method}
21    \alias{rcond,dspMatrix,character-method}
22    \alias{rcond,dspMatrix,missing-method}
23    \alias{rcond,dsyMatrix,character-method}
24    \alias{rcond,dsyMatrix,missing-method}
25    \alias{solve,dspMatrix,dgeMatrix-method}
26    \alias{solve,dspMatrix,integer-method}
27    \alias{solve,dspMatrix,matrix-method}
28    \alias{solve,dspMatrix,missing-method}
29    \alias{solve,dspMatrix,numeric-method}
30    \alias{solve,dsyMatrix,dgeMatrix-method}
31    \alias{solve,dsyMatrix,matrix-method}
32    \alias{solve,dsyMatrix,missing-method}
33    \alias{t,dspMatrix-method}
34  \alias{t,dsyMatrix-method}  \alias{t,dsyMatrix-method}
35  \title{Class "dsyMatrix" of symmetric matrices}  \alias{unpack,dspMatrix-method}
36  \description{The \code{"dsyMatrix"} class is the class of symmetric  \title{Symmetric, dense matrices}
37    matrices in non-packed storage.  Only the upper triangle or the lower  \description{
38    triangle is stored.}    The \code{"dsyMatrix"} class is the class of symmetric, dense matrices
39      in non-packed storage and \code{"dspMatrix"} is the class of symmetric
40      dense matrices in packed storage.  Only the upper triangle or the
41      lower triangle is stored.
42    }
43  \section{Objects from the Class}{  \section{Objects from the Class}{
44  Objects can be created by calls of the form \code{new("dsyMatrix", ...)}.  Objects can be created by calls of the form \code{new("dsyMatrix", ...)}.
45  }  }
# Line 21  Line 49 
49        either "U", for upper triangular, and "L", for lower triangular.}        either "U", for upper triangular, and "L", for lower triangular.}
50      \item{\code{x}:}{Object of class \code{"numeric"}. The numeric      \item{\code{x}:}{Object of class \code{"numeric"}. The numeric
51        values that constitute the matrix, stored in column-major order.}        values that constitute the matrix, stored in column-major order.}
52      \item{\code{Dim}:}{Object of class \code{"integer"}. The dimensions      \item{\code{Dim},\code{Dimnames}:}{The dimension (a length-2
53        of the matrix which must be a two-element vector of non-negative        \code{"integer"}) and corresponding names (or \code{NULL}), see the
54        integers.}        \code{\link{Matrix-class}}.}
     \item{\code{norm}:}{Object of class \code{"numeric"}. A named  
       numeric vector of norms of the matrix.  Some possible components  
       are \code{"O"}, the one norm; \code{"I"}, the infinity norm;  
       \code{"F"}, the Frobenius norm; and \code{"M"}, the maximum  
       absolute value.}  
55      \item{\code{rcond}:}{Object of class \code{"numeric"}. A named      \item{\code{rcond}:}{Object of class \code{"numeric"}. A named
56        numeric vector of reciprocal condition numbers in either the        numeric vector of reciprocal condition numbers in either the
57        1-norm \code{"O"} or the infinity norm \code{"I"}.}        1-norm \code{"O"} or the infinity norm \code{"I"}.}
# Line 38  Line 61 
61  }  }
62  \section{Extends}{  \section{Extends}{
63  Class \code{"dgeMatrix"}, directly.  Class \code{"dgeMatrix"}, directly.
64  Class \code{"Matrix"}, by class \code{"dgeMatrix"}.  Class \code{"symmetricMatrix"}, directly.
65    Class \code{"Matrix"} and others, by class \code{"dgeMatrix"}.
66  }  }
67  \section{Methods}{  \section{Methods}{
68    \describe{    \describe{
69        \item{coerce}{\code{signature(from = "dspMatrix", to = "dgeMatrix")}}
70      \item{coerce}{\code{signature(from = "dsyMatrix", to = "dgeMatrix")}}      \item{coerce}{\code{signature(from = "dsyMatrix", to = "dgeMatrix")}}
71        \item{coerce}{\code{signature(from = "dspMatrix", to = "matrix")}}
72      \item{coerce}{\code{signature(from = "dsyMatrix", to = "matrix")}}      \item{coerce}{\code{signature(from = "dsyMatrix", to = "matrix")}}
73        \item{coerce}{\code{signature(from = "dsyMatrix", to = "dspMatrix")}}
74        \item{coerce}{\code{signature(from = "dspMatrix", to = "dsyMatrix")}}
75        \item{norm}{\code{signature(x = "dspMatrix", type = "character")}}
76      \item{norm}{\code{signature(x = "dsyMatrix", type = "character")}}      \item{norm}{\code{signature(x = "dsyMatrix", type = "character")}}
77        \item{norm}{\code{signature(x = "dspMatrix", type = "missing")}}
78        \item{norm}{\code{signature(x = "dsyMatrix", type = "missing")}}
79        \item{solve}{\code{signature(a = "dspMatrix", b = "missing")}}
80        \item{solve}{\code{signature(a = "dsyMatrix", b = "missing")}}
81        \item{solve}{\code{signature(a = "dspMatrix", b = "dgeMatrix")}}
82        \item{solve}{\code{signature(a = "dsyMatrix", b = "dgeMatrix")}}
83        \item{solve}{\code{signature(a = "dspMatrix", b = "matrix")}}
84        \item{solve}{\code{signature(a = "dsyMatrix", b = "matrix")}}
85    }    }
86  }  }
87  %\references{}  %\references{}
88  %\author{}  %\author{}
89  \seealso{  \seealso{
90    \code{\link{dgeMatrix-class}}, \code{\link{Matrix-class}}    \code{\link{dgeMatrix-class}}, \code{\link{Matrix-class}},
91      \code{\link[base]{solve}}, \code{\link{norm}}, \code{\link{rcond}},
92      \code{\link[base]{t}}
93    }
94    \examples{
95    ## Only upper triangular part matters (when uplo == "U" as per default)
96    (sy2 <- new("dsyMatrix", Dim = as.integer(c(2,2)), x = c(14, NA,32,77)))
97    (c2 <- chol(sy2))
98    all.equal(c2, c2. <- chol(as(sy2, "dpoMatrix")))# equal, but not same class
99    str(c2)
100    
101    ## An example where chol() can't work
102    (sy3 <- new("dsyMatrix", Dim = as.integer(c(2,2)), x = c(14, -1, 2, -7)))
103    
104    validObject(as(sy3, "dpoMatrix"), test=TRUE) # >> is not pos.def.
105    % .... Lapack routine dpotrf returned error code 2 -- FIXME: better message
106    try(chol(sy3)) ## Error: not pos.def
107  }  }
 %\examples{}  
108  \keyword{classes}  \keyword{classes}

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