pysteps.utils.spectral.corrcoef#
- pysteps.utils.spectral.corrcoef(X, Y, shape, use_full_fft=False)#
Compute the correlation coefficient between two-dimensional arrays in the spectral domain.
- Parameters:
X (array_like) – A complex array representing the Fourier transform of a two-dimensional array.
Y (array_like) – A complex array representing the Fourier transform of a two-dimensional array.
shape (tuple) – A two-element tuple specifying the shape of the original input arrays in the spatial domain.
use_full_fft (bool) – If True, X and Y represent the full FFTs of the original arrays. Otherwise, they are assumed to contain only the symmetric part, i.e. in the format returned by numpy.fft.rfft2.
- Returns:
out – The correlation coefficient. Gives the same result as numpy.corrcoef(X.flatten(), Y.flatten())[0, 1].
- Return type:
float