dgeMatrix-class {Matrix} | R Documentation |

## Class "dgeMatrix" of Dense Numeric (S4 Class) Matrices

### Description

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

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

### Objects from the Class

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(..)`

.

### Slots

`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.

### Methods

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

### See Also

Classes `Matrix`

,
`dtrMatrix`

, and `dsyMatrix`

.

[Package

*Matrix* version 1.5-1

Index]