dgeMatrix-class | R Documentation |

A general numeric dense matrix in the S4 Matrix
representation. `dgeMatrix`

is the *“standard”*
class for dense numeric matrices in the Matrix package.

Objects can be created by calls of the form `new("dgeMatrix", ...)`

or, more commonly, by coercion from the `Matrix`

class (see
Matrix) or by `Matrix(..)`

.

`x`

:Object of class

`"numeric"`

- the numeric values contained in the matrix, in column-major order.`Dim`

:Object of class

`"integer"`

- the dimensions of the matrix - must be an integer vector with exactly two non-negative values.`Dimnames`

:a list of length two - inherited from class

`Matrix`

.`factors`

:Object of class

`"list"`

- a list of factorizations of the matrix.

The are group methods (see, e.g., `Arith`

)

- Arith
`signature(e1 = "dgeMatrix", e2 = "dgeMatrix")`

: ...- Arith
`signature(e1 = "dgeMatrix", e2 = "numeric")`

: ...- Arith
`signature(e1 = "numeric", e2 = "dgeMatrix")`

: ...- Math
`signature(x = "dgeMatrix")`

: ...- Math2
`signature(x = "dgeMatrix", digits = "numeric")`

: ...

matrix products `%*%`

,
`crossprod()`

and `tcrossprod()`

,
several `solve`

methods,
and other matrix methods available:

- Schur
`signature(x = "dgeMatrix", vectors = "logical")`

: ...- Schur
`signature(x = "dgeMatrix", vectors = "missing")`

: ...- chol
`signature(x = "dgeMatrix")`

: see`chol`

.- coerce
`signature(from = "dgeMatrix", to = "lgeMatrix")`

: ...- coerce
`signature(from = "dgeMatrix", to = "matrix")`

: ...- coerce
`signature(from = "matrix", to = "dgeMatrix")`

: ...- colMeans
`signature(x = "dgeMatrix")`

: columnwise means (averages)- colSums
`signature(x = "dgeMatrix")`

: columnwise sums- diag
`signature(x = "dgeMatrix")`

: ...- dim
`signature(x = "dgeMatrix")`

: ...- dimnames
`signature(x = "dgeMatrix")`

: ...- eigen
`signature(x = "dgeMatrix", only.values= "logical")`

: ...- eigen
`signature(x = "dgeMatrix", only.values= "missing")`

: ...- norm
`signature(x = "dgeMatrix", type = "character")`

: ...- norm
`signature(x = "dgeMatrix", type = "missing")`

: ...- rcond
`signature(x = "dgeMatrix", norm = "character")`

or`norm = "missing"`

: the reciprocal condition number,`rcond()`

.- rowMeans
`signature(x = "dgeMatrix")`

: rowwise means (averages)- rowSums
`signature(x = "dgeMatrix")`

: rowwise sums- t
`signature(x = "dgeMatrix")`

: matrix transpose

Classes `Matrix`

,
`dtrMatrix`

, and `dsyMatrix`

.

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