# sparseMatrix-class

From Matrix v0.99-3
by Douglas Bates

##### Virtual Class "sparseMatrix" --- Mother of Sparse Matrices

Virtual Mother Class of All Sparse Matrices

- Keywords
- classes

##### 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.

##### Extends

Class `"Matrix"`

, directly.

##### Examples

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

*Documentation reproduced from package Matrix, version 0.99-3, License: GPL version 2 or later. This R package includes code from the Metis package and from NIST. This code is covered by separate copyrights; see the file Copyrights for details. This R package includes code from the University of Florida sparse matrix library maintained by Tim Davis. All sections of that code are covered by the GPL or LGPL licenses. See the directory UFsparse for details.*

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