solve(a, b, tol)
a
| an object inheriting from class code{pdMat}, representing a positive definite matrix. |
b
| this argument is only included for consistency with the generic function and is not used in this method function. |
tol
|
an optional numeric value for the tolerance used in the
numerical algorithm. Defaults to 1e-7 .
|
a
is inverted and
assigned to a
.pdMat
object similar to a
, but with coefficients
corresponding to the inverse of the positive-definite matrix
represented by a
.pdMat
library(lme) pd1 <- pdCompSymm(3 * diag(3) + 1) solve(pd1)