pyriemann.utils.tangentspace.untangent_space¶
- pyriemann.utils.tangentspace.untangent_space(T, Cref, *, metric='riemann')¶
Transform tangent vectors back to matrices.
Transform tangent vectors back to matrices, according to a reference matrix Cref and to a specific exponential map.
- Parameters:
- Tndarray, shape (…, n * (n + 1) / 2)
Tangent vectors.
- Crefndarray, shape (n, n)
Reference matrix.
- metricstring | callable, default=”riemann”
Metric used for exponential map, can be: “euclid”, “logeuclid”, “riemann”, or a callable function.
- Returns:
- Xndarray, shape (…, n, n)
Matrices in manifold.