| is.positive.definite {calibrator} | R Documentation |
Returns TRUE if and only if a matrix is positive definite.
is.positive.definite(a, ...)
a |
Matrix to be tested |
... |
Extra arguments passed to eigen(), such as
symmetric. |
A wrapper for eigen() (a matrix is positive definite if all its
eigenvalues are positive). This function is included for convenience only.
Robin K. S. Hankin
is.positive.definite(diag(3),sym=TRUE) is.positive.definite(diag(6)-0.1)