| sparseMatrix-class {Matrix} | R Documentation |
Virtual Mother Class of All Sparse Matrices
Dim:"integer" - the dimensions
of the matrix - must be an integer vector with exactly two
non-negative values.Dimnames:Matrix, see Matrix-class.factors:"list" - a list
of factorizations of the matrix.
Class "Matrix", directly.
signature(object = "sparseMatrix"): The
show method for sparse matrices prints
“structural” zeroes as "." or blank.
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.
showClass("sparseMatrix") ## and look at the help() of its subclasses