| unpack {Matrix} | R Documentation |
Expands decompositions stored in compact form into matrix factors.
unpack(x, ...)
x |
a matrix stored in packed form, e.g., of class "d?pMatrix"
where "?" is "t" for triangular or "s" for symmetric.
|
... |
further arguments passed to or from other methods. |
This is a generic function with special methods for different types
of packed matrices. Use showMethods("unpack") to list
the methods for unpack().
A Matrix object containing the full-storage representation of
x.
showMethods("unpack")
(cp4 <- chol(Hilbert(4))) # is triangular
tp4 <- as(cp4,"dtpMatrix")# [t]riangular [p]acked
str(tp4)
(unpack(tp4))
## Not run:
## once we have Diagonal() :
unpack(Diagonal( 1:3))
## End(Not run)