bispy.utils.normalizeStokes

bispy.utils.normalizeStokes(S0, S1, S2, S3, tol=0.0)[source]

Normalize Stokes parameters S1, S2, S3 by S0.

Normalization can be performed using a soft thresholding-like method, if regularization is needed:

Si = Si/(S0 + tol*np.max(S0))

where i = 1, 2, 3 and tol is the tolerance factor. This function assumes that the maximum value of S0 has a significance for the whole indices of the Si arrays.

Parameters:

S0, S1, S2, S3array_type
tolfloat, optional

Returns:

S1n, S2n, S3narray_type