matrix.csr.chol-class {SparseM}R Documentation

Class "matrix.csr.chol"

Description

A class of objects returned from Ng and Peyton's (1993) block sparse Cholesky algorithm

Objects from the Class

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

Slots

nrow:
Object of class integer, number of rows in the linear system of equations
nnzlindx:
Object of class numeric, number of non-zero elements in lindx
nsuper:
Object of class integer, number of supernodes
lindx:
Object of class integer, vector of integer containing, in column major order, the row subscripts of the non-zero entries in the Cholesky factor in a compressed storage format
xlindx:
Object of class integer, vector of integer of pointers for lindx
nnzl:
Object of class numeric, number of non-zero entries, including the diagonal entries, of the Cholesky factor stored in lnz
lnz:
Object of class numeric, contains the entries of the Cholesky factor
xlnz:
Object of class integer, column pointer for the Cholesky factor stored in lnz
invp:
Object of class integer, vector of integer of inverse permutation vector
perm:
Object of class integer, vector of integer of permutation vector
xsuper:
Object of class integer, array containing the supernode partioning
det:
Object of class numeric, determinant of the Cholesky factor
ierr:
Object of class integer, error flag
time:
Object of class numeric execution time

Methods

backsolve
signature(r = "matrix.csr.chol"): ...

See Also

chol, backsolve


[Package SparseM version 0.54 Index]