expand Expand a (Matrix) Decomposition into FactorsExpands decompositions stored in compact form into factors.
expand(x, ...)
x | a matrix decomposition. |
... | further arguments passed to or from other methods. |
This is a generic function with special methods for different types of decompositions, see showMethods(expand) to list them all.
The expanded decomposition, typically a list of matrix factors.
Factors for decompositions such as lu and qr can be stored in a compact form. The function expand allows all factors to be fully expanded.
The LU lu, and the Cholesky decompositions which have expand methods; facmul.
(x <- Matrix(round(rnorm(9),2), 3, 3)) (ex <- expand(lux <- lu(x)))
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