"CHMfactor" is a class of
CHOLMOD-based Cholesky factorizations of symmetric, sparse,
compressed, column-oriented matrices. Such a factorization is
simplicial (virtual class "CHMsimpl") or supernodal (virtual
class "CHMsuper"). Objects that inherit from these classes are
either numeric factorizations (classes "dCHMsimpl" and
"dCHMsuper") or symbolic factorizations (classes
"nCHMsimpl" and "nCHMsuper").## S3 method for class 'CHMfactor':
update(object, parent, mult = 0, \dots)"CHMfactor" object."dsCMatrix " matrix or
"dgCMatrix " object with the same nonzero
pattern as the matrix that generated object. If
parent is a symmetric mmult times the
identity matrix is (implicitly) added to parent or
tcrossprod(parent) before updating the decomposition
object.new("dCHMsuper", ...)
but are more commonly created via Cholesky(),
applied to dsCMatrix lsCMatrix Cholesky, also for examples;
class dgCMatrix