pyriemann.utils.test.is_sym_pos_def

pyriemann.utils.test.is_sym_pos_def(X, tol=0.0)

Check if all matrices are symmetric positive-definite (SPD).

Parameters:

Xndarray, shape (…, n, n)

The set of square matrices, at least 2D ndarray.

tolfloat, default 0.0

Threshold below which eigen values are considered zero.

Returns:

retboolean

True if all matrices are symmetric positive-definite.