mini.roots
Obtain square roots of penalty matrices
Description
INTERNAL function to obtain square roots, B[[i]]
, of the penalty matrices S[[i]]
's having as few columns as possible.
Usage
mini.roots(S, off, np, rank = NULL)
Arguments
S | a list of penalty matrices, in packed form. |
off | a vector where the i-th element is the offset for the i-th matrix. The elements in columns |
np | total number of parameters. |
rank | here |
Value
A list of matrix square roots such that S[[i]]=B[[i]]%*%t(B[[i]])
.
Author(s)
Simon N. Wood <[email protected]>.
Copyright (©) 1999–2012 R Foundation for Statistical Computing.
Licensed under the GNU General Public License.