chol2inv {pbdDMAT} | R Documentation |
qr()
takes the QR decomposition.
## S4 method for signature 'ddmatrix' chol2inv(x, size = NCOL(x))
x |
numeric distributed matrices for |
size |
number of columns of |
The function returns the inverse of a choleski factored matrix, or the
inverse of crossprod(x)
if qr.R(qr(x))
is passed.
A numeric distributed matrix.