dgeMatrix-class function

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

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

class for dense numeric matrices in the Matrix package.

class

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.

• 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.