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.