Matrix (version 1.3-4)

RsparseMatrix-class: Class "RsparseMatrix" of Sparse Matrices in Row-compressed Form

Description

The "RsparseMatrix" class is the virtual class of all sparse matrices coded in sorted compressed row-oriented form. Since it is a virtual class, no objects may be created from it. See showClass("RsparseMatrix") for its subclasses.

Slots

j:

Object of class "integer" of length nnzero (number of non-zero elements). These are the row numbers for each non-zero element in the matrix.

p:

Object of class "integer" of pointers, one for each row, to the initial (zero-based) index of elements in the row.

Dim, Dimnames:

inherited from the superclass, see '>sparseMatrix.

Extends

Class "sparseMatrix", directly. Class "Matrix", by class "sparseMatrix".

Methods

Originally, few methods were defined on purpose, as we rather use the '>CsparseMatrix in Matrix. Then, more methods were added but beware that these typically do not return "RsparseMatrix" results, but rather Csparse* or Tsparse* ones; e.g., R[i, j] <- v for an "RsparseMatrix" R works, but after the assignment, R is a (triplet) "TsparseMatrix".

t

signature(x = "RsparseMatrix"): ...

coerce

signature(from = "RsparseMatrix", to = "CsparseMatrix"): ...

coerce

signature(from = "RsparseMatrix", to = "TsparseMatrix"): ...

See Also

its superclass, '>sparseMatrix, and, e.g., class '>dgRMatrix for the links to other classes.

Examples

# NOT RUN {
showClass("RsparseMatrix")
# }