Class "matrix.ssc" - Sparse Matrices in [S]ymmetric [S]parse [C]olumn Format
A class for sparse matrices stored in symmetric sparse column ('ssc') format.
class
Objects can be created by calls of the form new("matrix.ssc", ...).
ra:: Object of class numeric, a real array of nnz elements containing the non-zero elements of the lower triangular part 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 matrixsignature(x = "matrix.ssc"): ...signature(x = "matrix.ssc"): ...signature(x = "matrix.ssc"): ...signature(x = "matrix.ssc"): ...signature(x = "matrix.ssc"): ...matrix.csr-class