pyriemann.utils.tangentspace.log_map_euclid¶
- pyriemann.utils.tangentspace.log_map_euclid(X, Cref)¶
Project matrices in tangent space by Euclidean logarithmic map.
The projection of a matrix \(\mathbf{X}\) from manifold to tangent space by Euclidean logarithmic map according to a reference matrix \(\mathbf{C}_\text{ref}\) is:
\[\mathbf{X}_\text{new} = \mathbf{X} - \mathbf{C}_\text{ref}\]- Parameters:
- Xndarray, shape (…, n, m)
Matrices in manidold.
- Crefndarray, shape (n, m)
The reference matrix.
- Returns:
- X_newndarray, shape (…, n, m)
Matrices projected in tangent space.
Notes
New in version 0.4.