matrix.csc-class {SparseM}R Documentation

Class "matrix.csc"

Description

A new class for sparse matrices stored in compressed sparse column format

Objects from the Class

Objects can be created by calls of the form new("matrix.csc", ...).

Slots

ra:
Object of class numeric, a real array of nnz elements containing the non-zero elements of A, stored in column order. Thus, if i<j, all elements of column i precede elements from column j. The order of elements within the column is immaterial.
ja:
Object of class integer, an integer array of nnz elements containing the row indices of the elements stored in `ra'.
ia:
Object of class integer, an integer array of n+1 elements containing pointers to the beginning of each column in the arrays `ra' and `ja'. Thus `ia[i]' indicates the position in the arrays `ra' and `ja' where the ith column begins. The last, (n+1)st, element of `ia' indicates where the n+1 column would start, if it existed.
dimension:
Object of class integer, dimension of the matrix

Methods

as.matrix.csr
signature(x = "matrix.csc"): ...
as.matrix.ssc
signature(x = "matrix.csc"): ...
as.matrix.ssr
signature(x = "matrix.csc"): ...
as.matrix
signature(x = "matrix.csc"): ...
chol
signature(x = "matrix.csc"): ...
dim
signature(x = "matrix.csc"): ...
t
signature(x = "matrix.csc"): ...

See Also

matrix.csr-class


[Package SparseM version 0.54 Index]