sparseMatrix-class {Matrix}R Documentation

Virtual Class "sparseMatrix" - Mother of Sparse Matrices

Description

Virtual Mother Class of All Sparse Matrices

Slots

Dim, and Dimnames, see Matrix-class.

Extends

Class "Matrix", directly.

Methods

show
signature(object = "sparseMatrix"): The show method for sparse matrices prints “structural” zeroes as "." or blank.

Note

In method selection for multiplication operations (i.e. %*% and the two-argument form of crossprod) the sparseMatrix class takes precedence in the sense that if one operand is a sparse matrix and the other is any type of dense matrix then the dense matrix is coerced to a dgeMatrix and the appropriate sparse matrix method is used.

Examples

showClass("sparseMatrix") ## and look at the help() of its subclasses

[Package Matrix version 0.95-10 Index]