mesmer.stats.gaspari_cohn_correlation_matrices#
- mesmer.stats.gaspari_cohn_correlation_matrices(geodist, localisation_radii)#
Gaspari-Cohn correlation matrices for a range of localisation radii
- Parameters:
geodist (xr.DataArray, np.ndarray) – 2D array of great circle distances. Calculated from e.g.
geodist_exact
.localisation_radii (iterable of float) – Localisation radii to test (in km)
- Returns:
gaspari_cohn_correlation_matrices (dict[float :
xr.DataArray
,np.ndarray
]) – Gaspari-Cohn correlation matrix (values) for each localisation radius (keys)
Notes
Values in
localisation_radii
should not exceed 10’000 km by much because it can lead to correlation matrices which are not positive semidefinite.See also
gaspari_cohn
,geodist_exact